Auxiliary teaching aid for international maritime collision avoidance rule demonstration
By designing auxiliary teaching tools for cover assembly and hard card boards, the international maritime collision avoidance rules are intuitively displayed, which solves the problem that students find it difficult to understand the rules, improves teaching effect and learning efficiency, and is suitable for navigation education and practical applications.
Patent Information
- Application Number
- CN202421902273.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The existing technology is difficult to effectively help students understand and master the complex international maritime collision avoidance rules, which makes students unable to meet the requirements of navigation practice after the exam.
Design an auxiliary teaching tool, including a cover assembly and a hard cardboard. By setting up observation ports and status entries for different ship types and light types, using flat visualization and display design, different situations in international maritime collision avoidance rules are visualized, and combined with practical learning tools to enhance teaching effect.
It improves students' learning efficiency and interest in international maritime collision avoidance rules, reduces learning difficulty, enhances teaching quality, facilitates the education and teaching of rules, and is suitable for intuitive comparison between ship drivers and lookout personnel.
Smart Images
Figure CN223245201U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of teaching tools, and relates to an auxiliary teaching tool that can be used for demonstrating the International Regulations for Preventing Collisions at Sea. Background Art
[0002] The International Regulations for Preventing Collisions at Sea (COLREGs) are a complex set of regulations and standards covering navigation, signaling, and navigational rules for international vessels. This presents technical challenges for students majoring in maritime studies who lack maritime experience or navigation background. Although instructors currently use a step-by-step, progressive teaching approach, introducing each rule from simple to complex, and using case studies, simulation exercises, and even virtual software to help students understand and apply the rules, this approach falls far short of enabling students to apply them with ease. As a result, after the course exam, students' actual knowledge falls far short of meeting the requirements of maritime practice.
[0003] Although there are many software and hardware learning methods for the International Regulations for Preventing Collisions at Sea, the present invention summarizes the display of signal lights and patterns under different ship types or states involved in the International Regulations for Preventing Collisions at Sea into a portable learning tool, which is more intuitive and effective for students to master the course, can achieve better teaching results, facilitate instructors' explanations, and help students learn and master the rules. At the same time, as an auxiliary tool, it can also provide a reference for ship trainees to strengthen their rule learning, and facilitate junior seafarers' knowledge mastery during the internship stage. Utility Model Content
[0004] In order to solve the above problems, the technical solution adopted by the present invention is: an auxiliary teaching aid that can be used for demonstrating the International Regulations for Preventing Collisions at Sea, comprising:
[0005] Cover assembly and hard cardboard;
[0006] One side of the hard cardboard is provided with a ship type and signal light area for displaying different ship types and signal light types; the other side of the hard cardboard is provided with a ship status entry area for displaying the status of all ships;
[0007] The cover assembly includes a first hard cover and a second hard cover; the first hard cover and the second hard cover are arranged in correspondence with each other at a certain distance;
[0008] A plurality of viewing ports are provided on one side of the first hard cover for displaying the ship type and light type of different ship types or states from the bow perspective and the port perspective when the hard card moves within the cover assembly; a first status entry viewing port is provided on the other side of the first hard cover for displaying the ship status entry when the hard card moves within the cover assembly;
[0009] A second status entry viewing port is provided on one side of the second hard cover for displaying the ship status entry when the hard card moves inside the cover assembly;
[0010] A plurality of observation ports are provided on the other side of the second hard cover for displaying the ship type and light type of different ship types or states from the stern perspective and the starboard perspective when the hard card moves inside the cover assembly.
[0011] Furthermore: the four corners of the first hard cover and the second hard cover are fixed by letter-shaped buckles.
[0012] Furthermore, the observation ports for the ship type and the signal light pattern of the first hard cover include a first observation port, a second observation port, a third observation port, a fourth observation port, a fifth observation port, a sixth observation port, a seventh observation port, an eighth observation port, a ninth observation port, a tenth observation port, an eleventh observation port, a twelfth observation port, a thirteenth observation port, a fourteenth observation port, a fifteenth observation port, a sixteenth observation port, a seventeenth observation port, and an eighteenth observation port;
[0013] The first observation port, the second observation port, the third observation port, the fourth observation port, the sixth observation port, and the fifth observation port define the positions of the bow viewing angles for different ship types or states;
[0014] The seventh observation port, the eighth observation port, and the ninth observation port define the position of the bow viewing angle of the towed vessel;
[0015] The tenth observation port, the eleventh observation port, the twelfth observation port, the thirteenth observation port, the fourteenth observation port, and the fifteenth observation port define port side viewing positions under different ship types or states;
[0016] The sixteenth observation port, the seventeenth observation port, and the eighteenth observation port define the viewing position of the port side of the towed vessel;
[0017] The first observation port, the second observation port, the third observation port, the eighth observation port, the tenth observation port, the eleventh observation port, the twelfth observation port and the first status entry observation port are in the shape of vertical bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.1495r;
[0018] The seventh observation port is a horizontal bar-shaped rounded hole position, and the four rounded corner radii of the seventh observation port 107 are the same, which is 0.111r;
[0019] The fourth observation port is circular; the radius of the fourth observation port is the width of the first state entry observation port; the diameter of the fourth observation port is 0.1460r;
[0020] The fifth observation port, the sixth observation port, the ninth observation port, the fourteenth observation port, the sixteenth observation port, and the eighteenth observation port are all horizontal bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.103r;
[0021] The sixteen observation ports are elliptical, and the major axis of the ellipse is r;
[0022] The thirteenth observation port, the fifteenth observation port, and the seventeenth observation port are circular in shape, with a radius of 0.1475r.
[0023] Furthermore: the positions of the observation ports for the ship type and light signal shape of the first hard cover are determined by establishing a coordinate system with the lower left corner of the first hard cover as the center, the length direction of the first hard cover as the X-axis, and the width direction of the first hard cover as the Y-axis, and determining the positions and sizes of the first observation port, the second observation port, the third observation port, the fourth observation port, the fifth observation port, the sixth observation port, the seventh observation port, the eighth observation port, the ninth observation port, the tenth observation port, the eleventh observation port, the twelfth observation port, the thirteenth observation port, the fourteenth observation port, the fifteenth observation port, the sixteenth observation port, the seventeenth observation port, and the eighteenth observation port, as specifically as follows:
[0024] The center position of the first observation port is X = 1.869r, Y = 11.588r, the width is 0.299r, and the height is 0.888r;
[0025] The center position of the second observation port is X = 1.599r, Y = 10.480r, the width is 0.299r, and the height is 1.146r;
[0026] The center position of the third observation port is X = 2.158r, Y = 9.771r, the width is 0.299r, and the height is 1.378r;
[0027] The center position of the fourth observation port is X=1.890r, Y=8.798r, the width is 0.292r, and the height is 0.292r;
[0028] The center position of the fifth observation port is X = 0.779r, Y = 8.390r, the width is 0.313r, and the height is 0.206r;
[0029] The center position of the sixth observation port is X = 2.973r, Y = 8.573r, the width is 0.313r, and the height is 0.206r;
[0030] The center position of the seventh observation port is X = 3.542r, Y = 7.493r, the width is 0.295r, and the height is 0.222r;
[0031] The center position of the eighth observation port is X = 4.486r, Y = 8.047r, the width is 0.299r, and the height is 0.564r;
[0032] The center position of the ninth observation port is X = 5.448r, Y = 7.684r, the width is 0.295r, and the height is 0.206r;
[0033] The center position of the tenth observation port is X = 2.990r, Y = 5.737r, the width is 0.299r, and the height is 0.813r;
[0034] The center position of the eleventh observation port is X = 2.719r, Y = 4.621r, the width is 0.299r, and the height is 1.126r;
[0035] The center position of the twelfth observation port is X = 3.279r, Y = 3.940r, the width is 0.299r, and the height is 1.396r;
[0036] The center position of the thirteenth observation port is X=1.656r, Y=2.957r, the width is 0.295r, and the height is 0.295r;
[0037] The center position of the fourteenth observation port is X = 2.466r, Y = 2.564r, the width is 0.267r, and the height is 0.206r;
[0038] The center position of the fifteenth observation port is X = 6.727r, Y = 2.331r, the width is 0.295r, and the height is 0.295r;
[0039] The center position of the sixteenth observation port is X=8.180r, Y=1.647r, the width is 0.295r, and the height is 0.206r;
[0040] The center position of the seventeenth observation port is X = 12.183r, Y = 2.056r, the width is 0.295r, and the height is 0.295r;
[0041] The center position of the eighteenth observation port is X = 12.690r, Y = 1.829r, the width is 0.295r, and the height is 0.206r;
[0042] The center position of the observation port of the first state entry is X=22.011r, Y=7.24r, the width is 0.299r, and the height is 9.529r.
[0043] Furthermore: the first hard cover and the second hard cover are rectangular, and the long sides of the first hard cover and the second hard cover are provided with middle press strips.
[0044] Furthermore: the observation ports for the ship type and light signal shape of the second hard cover include the 19th observation port, the 20th observation port, the 21st observation port, the 22nd observation port, the 23rd observation port, the 24th observation port, the 25th observation port, the 26th observation port, the 27th observation port, the 28th observation port, the 29th observation port, the 30th observation port, the 31st observation port, the 32nd observation port and the 33rd observation port;
[0045] The nineteenth observation port, the twentieth observation port, the twenty-first observation port, the twenty-second observation port, and the twenty-third observation port define the positions of the stern viewing angles for different ship types or states;
[0046] The twenty-fourth observation port limits the position of the stern viewing angle of the towed vessel;
[0047] The twenty-fifth observation port, the twenty-sixth observation port, the twenty-seventh observation port, the twenty-eighth observation port, the twenty-ninth observation port and the thirtieth observation port define starboard viewing positions under different ship types or conditions;
[0048] The thirty-first observation port, the thirty-second observation port, and the thirty-third observation port define the starboard viewing position of the towed vessel;
[0049] The nineteenth observation port, the twentieth observation port, the twenty-first observation port, the twenty-third observation port, the twenty-fourth observation port, the twenty-fifth observation port, the twenty-sixth observation port, and the twenty-seventh observation port all adopt vertical bar-shaped rounded corner holes, all of which are vertically arranged. The radius of the four rounded corners of each observation port hole is the same, which is 0.1495r;
[0050] The 22nd observation port is circular with a diameter of 0.1460r;
[0051] The 29th, 31st and 33rd observation ports are all horizontal bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.103r;
[0052] The thirty-first observation port is in the shape of an ellipse with a major axis of r;
[0053] The 28th observation port, the 30th observation port and the 32nd observation port are circular, and the radius is 0.1475r.
[0054] Furthermore: the positions of the observation ports for the ship type and light signal shape of the second hard cover are determined by establishing a coordinate system with the lower left corner of the second hard cover as the center, the length direction of the second hard cover as the X-axis, and the width direction of the second hard cover as the Y-axis to determine the center positions and sizes of the nineteenth observation port, the twentieth observation port, the twenty-first observation port, the twenty-second observation port, the twenty-third observation port, the twenty-fourth observation port, the twenty-fifth observation port, the twenty-sixth observation port, the twenty-seventh observation port, the twenty-eighth observation port, the twenty-ninth observation port, the thirtieth observation port, the thirty-first observation port, the thirty-second observation port, and the thirty-third observation port, as follows:
[0055] The center position of the nineteenth observation port is X = 20.971r, Y = 11.588r, the width is 0.299r, and the height is 0.888r;
[0056] The center position of the 20th observation port is X = 21.241r, Y = 10.480r, the width is 0.299r, and the height is 1.146r;
[0057] The center position of the 21st observation port is X = 20.682r, Y = 9.771r, the width is 0.299r, and the height is 1.378r;
[0058] The center position of the 22nd observation port is X=20.950r, Y=8.798r, the width is 0.292r, and the height is 0.292r;
[0059] The center position of the twenty-third observation port is X = 20.963r, Y = 8.080r, the width is 0.299r, and the height is 0.564r;
[0060] The center position of the 24th observation port is X = 18.429r, Y = 7.515r, the width is 0.299r, and the height is 0.564r;
[0061] The center position of the 25th observation port is X = 19.850r, Y = 5.737r, the width is 0.299r, and the height is 0.813r;
[0062] The center position of the 26th observation port is X = 20.121r, Y = 4.621r, the width is 0.299r, and the height is 1.126r;
[0063] The center position of the 27th observation port is X = 19.561r, Y = 3.940r, the width is 0.299r, and the height is 1.396r;
[0064] The center position of the 28th observation port is X = 21.184r, Y = 2.957r, the width is 0.295r, and the height is 0.295r;
[0065] The center position of the twenty-ninth observation port is X = 20.374r, Y = 2.564r, the width is 0.267r, and the height is 0.206r;
[0066] The center position of the 30th observation port is X = 16.113r, Y = 2.331r, the width is 0.295r, and the height is 0.295r;
[0067] The center position of the thirty-first observation port is X = 14.66r, Y = 1.647r, the width is 0.295r, and the height is 0.206r;
[0068] The center position of the thirty-second observation port is X = 10.657r, Y = 2.056r, the width is 0.295r, and the height is 0.295r;
[0069] The center position of the thirty-third observation port is X = 10.150r, Y = 1.829r, the width is 0.295r, and the height is 0.206r;
[0070] The center position of the second state entry observation port is X=0.829r, Y=7.24r, the width is 0.299r, and the height is 9.529r.
[0071] The present utility model provides an auxiliary teaching aid that can be used for demonstrating the International Regulations for Preventing Collisions at Sea, and discloses an auxiliary teaching aid that can be used for demonstrating the signal light patterns of the International Regulations for Preventing Collisions at Sea. The utility model is based on the 1972 "International Regulations for Preventing Collisions at Sea" and utilizes plane visualization and display design to intuitively and scientifically display the signal light patterns of international ships in more than 60 different situations covered by the International Regulations for Preventing Collisions at Sea, converting the boring regulatory document into a more intuitive, concise, practical and experimental learning tool, enriching the content of text teaching, enhancing students' interest in learning, and improving the quality of teaching through a combination of practice and teaching. As an auxiliary teaching tool for the International Regulations for Preventing Collisions at Sea, the utility model not only facilitates the education and teaching of the rules text, but also reduces the difficulty of students learning the rules text and improves the efficiency of students' learning.
[0072] The utility model discloses an auxiliary teaching aid for demonstrating the International Regulations for Preventing Collisions at Sea. The utility model provides a cover assembly consisting of two hard covers on the front and back, and a hard card plate with different ship types and signal lights marked on the front and back. The four corners of the cover assembly and the middle pressure strip of the long side of the hard cover are fixed by rivets, thereby constructing an intuitive three-dimensional model. At the same time, by moving the hard card plate of the cover assembly left and right and using the card slot for comparison and reference, the utility model intuitively helps students understand and master various provisions on signal lights in the International Regulations for Preventing Collisions at Sea, thereby strengthening students' learning of the International Regulations for Preventing Collisions at Sea course and improving teaching effect.
[0073] This teaching aid systematically integrates the lights and signal shapes required for different types of ships and different ship states under various provisions of the International Regulations for Preventing Collisions at Sea. It intuitively displays these lights and signal shapes through a hard card with different ship types and light shapes marked on both sides. This adds experimental and practical elements to rules and regulations courses, enriches the teaching process, and improves the teaching experience of the International Regulations for Preventing Collisions at Sea course.
[0074] This teaching aid can also be used by ship pilots and lookouts to provide visual comparison and assist with lookout when they are not particularly familiar with the regulations. Lookouts visually judge the movement of opposing ships by observing the target ship's signal patterns. If they are unfamiliar with or unsure of the relevant provisions of the International Maritime Collision Regulations, this teaching aid can be used for comparison and to assist ship pilots in their lookout. BRIEF DESCRIPTION OF THE DRAWINGS
[0075] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0076] Figure 1 This is a schematic diagram of an auxiliary teaching aid for the demonstration of the International Regulations for Preventing Collisions at Sea. I - Starboard perspective;
[0077] Figure 2 This is a diagram of an auxiliary teaching aid for the demonstration of the International Regulations for Preventing Collisions at Sea. II - Port side perspective;
[0078] Figure 3 This is a schematic diagram of the first hard cover section - port side perspective;
[0079] Figure 4 This is a schematic diagram of the second hard cover section - starboard side perspective;
[0080] Figure 5 is a schematic diagram comparing the first hard cover and the second hard cover;
[0081] Figure 6 This is a schematic diagram of the coordinates of the second hard cover;
[0082] Figure 7 Schematic diagram comparing the first hard cover and the second hard cover; (a) is the first hard cover, (b) is the second hard cover;
[0083] Figure 8 It is a schematic diagram of a hard pallet;
[0084] Figure 9This is a schematic diagram of the lights that an uncontrolled vessel should display when moving across the water (from the bow and port perspectives);
[0085] Figure 10 When the first hard cover is attached, the diagram of the lights of the uncontrolled ship when moving across the water is displayed through the observation port (from the bow and port perspective);
[0086] Figure 11 This is a diagram of the lights that should be displayed by a power-driven vessel underway (from the bow and port perspectives) limited by its draught;
[0087] Figure 12 A schematic diagram of the lights of a power-driven vessel underway (both from the bow and port side) displayed through the observation port when the first hard cover is attached;
[0088] Figure 13 This is a schematic diagram of the lights that should be displayed by an uncontrolled vessel when moving across the water and by a power-driven vessel underway limited by its draft, assembled on a hard pallet (from the bow and port perspectives);
[0089] Figure 14 Schematic diagram of the lights of a vessel with limited maneuverability when moving through the water, as shown through the observation port when the vessel is in the first hard cover (from the bow and port perspectives);
[0090] Figure 15 This is a schematic diagram (from the bow and port perspectives) of the lights that should be displayed by an uncontrolled vessel when moving across the water, a power-driven vessel underway limited by its draft, or a vessel with restricted maneuverability when moving across the water, assembled on a rigid pallet.
[0091] Figure 1: 1st hard cover, 2nd hard cover, 3nd hard cardboard, 4nd letter buckle, 5nd middle pressure strip, 6nd ship type and light signal area, 7nd ship status entry area, 8nd first status entry observation port, 9nd second status entry observation port, 101st observation port, 102nd observation port, 103rd observation port, 104th observation port, 105th observation port, 106th observation port, 107th observation port, 108th observation port, 109th observation port, 110th observation port, 111th observation port, 112th observation port, 113th observation port, 114 , the fourteenth observation port, 115, the fifteenth observation port, 116, the sixteenth observation port, 117, the seventeenth observation port, 118, the eighteenth observation port, 119, the nineteenth observation port, 120, the twentieth observation port, 121, the twenty-first observation port, 122, the twenty-second observation port, 123, the twenty-third observation port, 124, the twenty-fourth observation port, 125, the twenty-fifth observation port, 126, the twenty-sixth observation port, 127, the twenty-seventh observation port, 128, the twenty-eighth observation port, 129, the twenty-ninth observation port, 130, the thirtieth observation port, 131, the thirty-first observation port, 132, the thirty-second observation port, 133, the thirty-third observation port. DETAILED DESCRIPTION
[0092] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0093] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0094] Figure 1 This is a schematic diagram of an auxiliary teaching aid for the demonstration of the International Regulations for Preventing Collisions at Sea. I - Starboard perspective;
[0095] Figure 2 This is a diagram of an auxiliary teaching aid for the demonstration of the International Regulations for Preventing Collisions at Sea. II - Port side perspective;
[0096] An auxiliary teaching aid that can be used for demonstrating the International Regulations for Preventing Collisions at Sea, comprising:
[0097] Cover assembly and hard cardboard 3;
[0098] One side of the hard cardboard 3 is provided with a ship type and signal light area 6 for displaying different ship types and signal light types; the other side of the hard cardboard is provided with a ship status entry area 7 for displaying the status of all ships;
[0099] The cover assembly comprises a first hard cover 1 and a second hard cover 2; the first hard cover 1 and the second hard cover 2 are arranged in correspondence with each other at a certain distance;
[0100] The first hard cover 1 and the second hard cover 2 are made of paper, PVC board, acrylic board, aluminum board or copper board;
[0101] A plurality of viewing ports are provided on one side of the first hard cover 1 for displaying the ship type and light type of different ship types or states from the bow perspective and the port perspective when the hard card moves within the cover assembly. A first status entry viewing port 8 is provided on the other side of the first hard cover for displaying the ship status entries when the hard card moves within the cover assembly.
[0102] The second hard cover 2 is provided with a second status entry viewing port 9 on one side for displaying the ship status entry when the hard card moves inside the cover assembly.
[0103] The other side of the second hard cover 2 is provided with a plurality of observation ports for displaying the ship type and light type of different ship types or states from the stern perspective and the starboard perspective when the hard card moves inside the cover assembly.
[0104] The different types of vessels, light signals and all vessel status entries are determined by the International Regulations for Preventing Collisions at Sea.
[0105] The four corners of the first hard cover 1 and the second hard cover 2 are fixed by letter-shaped buckles 4.
[0106] The first and second hard covers 1 and 2 are rectangular, and are provided with intermediate beadings 5 along their long sides. The intermediate beadings 5 are approximately the same thickness as the hard cardboard 3, leaving space for the hard cardboard 3 to move horizontally left and right within the assembled cover body.
[0107] The first and second hard covers (1 and 2) feature viewing ports for light patterns corresponding to the port and starboard perspectives, and bow and stern perspectives, of international vessels. These ports vary in size and location, integrating over 60 different light patterns for different vessel types and states. Ports for corresponding status entries are located on one short side of the hard cover, indicating different vessel types and states.
[0108] The first hard cover 1 displays the port side view and the bow view of the ship, and the second hard cover 2 displays the starboard side view and the stern view of the ship;
[0109] Each panel area of the hard card board 3 is divided into two parts: the ship type and light signal area 6 and the ship status entry area 7. The two parts are integrated in a certain order according to the colors of different lights and shapes of different signals in the International Regulations for Preventing Collisions at Sea, and the corresponding ship types and status are displayed one by one. When the user moves the hard card board 3 left and right in the cover assembly, the light signal type that should be displayed for each ship type and its ship status can be intuitively displayed on the cover assembly.
[0110] The one-to-one correspondence between the vessel status entry area 7 and the vessel type and light pattern area 6 follows the following order (taking the port side as an example):
[0111] Step 1: There is a one-to-one correspondence between the vessel status entry area 7 and the vessel type and light and shape area 6. Each cell in area 7 is shifted left or right by one position, indicating that the lights or shapes that the vessel represented in the table should display in accordance with the International Regulations for Preventing Collisions at Sea are correctly displayed in area 6.
[0112] Step 2: The order of arrangement of the ship types and light patterns in Area 6 follows the following rules:
[0113] The rightmost side of the ship status entry area 7 ( Vessels engaged in underwater operations (safe side) Dangerous side) as the basis to the left, corresponding to the rightmost two green lights in the ship status entry area 7 as the basis to the left, corresponding to the rightmost side of the ship type and light pattern area 6 (the two green lights displayed by the ship in this case) as the basis to the left, in order, according to the order of ships in the ship status entry area 7, starting from the rightmost side of the ship status entry area 7 ( Vessels engaged in underwater operations (safe side) Dangerous side) to the left ( Vessels engaged in underwater operations (safe side) A total of 60 different situations for different ships (dangerous side);
[0114] The order of different ship types in the ship status entry area 7 from left to right is as follows:
[0115]
[0116]
[0117] The vessel types in the hard pallet's panel 3 area and the lights and shapes area 6 primarily represent the lights and shapes specified in the International Regulations for Preventing Collisions at Sea. Lights include red all-round lights, white all-round lights, yellow all-round lights, green all-round lights, red flashing lights, yellow flashing lights, red sidelights, green sidelights, white masthead lights, and white sternlights. Shapes include cone-shaped (pointed upward), cone-shaped (pointed downward), diamond-shaped, spherical, and cylindrical. The following table shows the corresponding icons for the above-listed light and shapes in the hard pallet's panel 3 area and lights and shapes area 6.
[0118]
[0119] The vessel type and vessel status area 6 in the panel area of the hard pallet 3 is mainly composed of the vessel types and vessel status specified in the International Regulations for Preventing Collisions at Sea and the various provisions of the annexes, including sailboats, motor sailboats, power boats, fishing vessels, hovercraft, ground effect vessels, pilot boats, vessels with limited maneuverability (underwater operations, underway, moving through the water underway, anchored), out-of-control vessels, limited draft vessels, anchored vessels, various types of fishing vessels, tugboats in various situations, and different types of vessels of different lengths, etc., for more than 60 different situations.
[0120] The ship type and light pattern area 6 in the hard pallet 3 panel area and the ship status entry area 7 have a one-to-one correspondence, which is mainly reflected in the following two points:
[0121] First, after any vertical line in the ship status entry area 7 corresponds to the status entry observation port in the cover assembly, the ship type or ship status displayed in the vertical line should be correctly displayed in the observation port of the No. 1 light and signal type on the first hard cover of the cover assembly according to the light or signal type displayed by the International Regulations for Preventing Collisions at Sea.
[0122] Second, after any vertical line in the ship status entry area 7 corresponds to the status entry observation window in the cover assembly, the ship type or ship status displayed in the vertical line should be correctly displayed in the observation port of the No. 2 light type on the second hard cover of the cover assembly according to the light or number displayed by the International Regulations for Preventing Collisions at Sea.
[0123] The present invention summarizes the different ship types and ship states listed in the aforementioned International Regulations for Preventing Collisions at Sea into 60 different situations. Therefore, the ship state entry area 7 in each panel area of the hard pallet 3 includes 60 vertical rows, respectively representing the 60 different ship types and ship states listed in the rules.
[0124] The vessel type and signal light pattern area 6 within the panel area of the rigid pallet 3 integrates the signal light patterns corresponding to the 60 different vessel types and states listed in the International Regulations for Preventing Collisions at Sea. The rigid pallet 3 can use a dark background to highlight the four basic signal light colors of red, yellow, green, and white.
[0125] The arrangement order of all 60 different ship type status entries in the ship status entry area 7 is as follows (taking the port side as an example):
[0126] Step 1: There is a one-to-one correspondence between the Vessel Status Entries area 7 and the Vessel Type and Lights and Shapes area 6. Each cell in the Vessel Status Entries area 7 is horizontally shifted one position to the left or right, indicating that the lights or shapes that the vessel represented in the table should display in accordance with the International Regulations for Preventing Collisions at Sea are correctly displayed in the Vessel Type and Lights and Shapes area 6.
[0127] Step 2: The order of arrangement of the ship types and light patterns in Area 6 follows the following rules:
[0128] The rightmost side of the ship status entry area 7 ( Vessels engaged in underwater operations (safe side) Dangerous side) as the basis to the left, corresponding to the rightmost two green lights in the ship status entry area 7 as the basis to the left, corresponding to the rightmost side of the ship type and light pattern area 6 (the two green lights displayed by the ship in this case) as the basis to the left, in order, according to the order of ships in the ship status entry area 7, starting from the rightmost side of the ship status entry area 7 ( Vessels engaged in underwater operations (safe side) Dangerous side) to the left ( Vessels engaged in underwater operations (safe side) A total of 60 different situations for different ships (dangerous side);
[0129] Figure 3 This is a schematic diagram of the first hard cover section - port side perspective;
[0130] Figure 4 It is a schematic diagram of the coordinates of the first hard cover;
[0131] The observation ports for ship types and signal lights of the first hard cover 1 include a first observation port 101, a second observation port 102, a third observation port 103, a fourth observation port 104, a fifth observation port 105, a sixth observation port 106, a seventh observation port 107, an eighth observation port 108, a ninth observation port 109, a tenth observation port 110, an eleventh observation port 111, a twelfth observation port 112, a thirteenth observation port 113, a fourteenth observation port 114, a fifteenth observation port 115, a sixteenth observation port 116, a seventeenth observation port 117, and an eighteenth observation port 118;
[0132] The first observation port 101, the second observation port 102, the third observation port 103, the eighth observation port 108, the tenth observation port 110, the eleventh observation port 111, the twelfth observation port 112 and the status entry observation port 9 are vertical bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.1495r;
[0133] The seventh observation port 107 is a horizontal bar-shaped rounded hole, and the four rounded corner radii of the seventh observation port 107 are the same, which is 0.111r;
[0134] The width of the first status entry viewing port 8 is the same as the font height of the ship status entry;
[0135] The fourth observation port 104 is circular; the radius of the fourth observation port 104 is the width of the first state entry observation port 8; the diameter of the fourth observation port 104 is 0.1460r;
[0136] The fifth observation port 105, the sixth observation port 106, the ninth observation port 109, the fourteenth observation port 114, the sixteenth observation port 116, and the eighteenth observation port 118 are all horizontal bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.103r;
[0137] The first observation port 101, the second observation port 102, the third observation port 103, the fourth observation port 104, the sixth observation port 106, and the fifth observation port 105 define the positions of the bow viewing angles of different ship types or states;
[0138] The seventh observation port 107, the eighth observation port 108, and the ninth observation port 109 define the position of the bow viewing angle of the towed vessel;
[0139] The fourteenth observation port 114 is in an elliptical shape, and the major axis of the ellipse is r;
[0140] The tenth observation port 110, the eleventh observation port 111, the twelfth observation port 112, the thirteenth observation port 113, the fourteenth observation port 114 and the fifteenth observation port 115 define port side viewing positions under different ship types or states;
[0141] The sixteen observation ports 116 are elliptical, and the major axis of the ellipse is r;
[0142] The thirteenth observation port 113, the fifteenth observation port 115, and the seventeenth observation port 117 are circular, with a radius of 0.1475r;
[0143] The sixteenth observation port 116 , the seventeenth observation port 117 , and the eighteenth observation port 118 define the port side viewing position of the towed vessel.
[0144] The positions of the observation ports for the ship type and the signal light pattern of the first hard cover 1 are determined by establishing a coordinate system with the lower left corner of the first hard cover 1 as the center, the length direction of the first hard cover 1 as the X-axis, and the width direction of the first hard cover 1 as the Y-axis to determine the positions and sizes of the first observation port 101, the second observation port 102, the third observation port 103, the fourth observation port 104, the fifth observation port 105, the sixth observation port 106, the seventh observation port 107, the eighth observation port 108, the ninth observation port 109, the tenth observation port 110, the eleventh observation port 111, the twelfth observation port 112, the thirteenth observation port 113, the fourteenth observation port 114, the fifteenth observation port 115, the sixteenth observation port 116, the seventeenth observation port 117, and the eighteenth observation port 118, as follows:
[0145] The center position of the first observation port 101 is X=1.869r, Y=11.588r, the width is 0.299r, and the height is 0.888r;
[0146] The center position of the second observation port 102 is X=1.599r, Y=10.480r, the width is 0.299r, and the height is 1.146r;
[0147] The center position of the third observation port 103 is X=2.158r, Y=9.771r, the width is 0.299r, and the height is 1.378r;
[0148] The center position of the fourth observation port 104 is X=1.890r, Y=8.798r, the width is 0.292r, and the height is 0.292r;
[0149] The center position of the fifth observation port 105 is X=0.779r, Y=8.390r, the width is 0.313r, and the height is 0.206r;
[0150] The center position of the sixth observation port 106 is X=2.973r, Y=8.573r, the width is 0.313r, and the height is 0.206r;
[0151] The center position of the seventh observation port 107 is X=3.542r, Y=7.493r, the width is 0.295r, and the height is 0.222r;
[0152] The center position of the eighth observation port 108 is X=4.486r, Y=8.047r, the width is 0.299r, and the height is 0.564r;
[0153] The center position of the ninth observation port 109 is X=5.448r, Y=7.684r, the width is 0.295r, and the height is 0.206r;
[0154] The center position of the tenth observation port 110 is X=2.990r, Y=5.737r, the width is 0.299r, and the height is 0.813r;
[0155] The center position of the eleventh observation port 111 is X=2.719r, Y=4.621r, the width is 0.299r, and the height is 1.126r;
[0156] The center position of the twelfth observation port 112 is X=3.279r, Y=3.940r, the width is 0.299r, and the height is 1.396r;
[0157] The center position of the thirteenth observation port 113 is X=1.656r, Y=2.957r, the width is 0.295r, and the height is 0.295r;
[0158] The center position of the fourteenth observation port 114 is X=2.466r, Y=2.564r, the width is 0.267r, and the height is 0.206r;
[0159] The center position of the fifteenth observation port 115 is X=6.727r, Y=2.331r, the width is 0.295r, and the height is 0.295r;
[0160] The center position of the sixteenth observation port 116 is X=8.180r, Y=1.647r, the width is 0.295r, and the height is 0.206r;
[0161] The center position of the seventeenth observation port 117 is X=12.183r, Y=2.056r, the width is 0.295r, and the height is 0.295r;
[0162] The center position of the eighteenth observation port 118 is X=12.690r, Y=1.829r, the width is 0.295r, and the height is 0.206r;
[0163] The center position of the first state entry observation port 8 is X=22.011r, Y=7.24r, the width is 0.299r, and the height is 9.529r.
[0164] Figure 5 This is a schematic diagram of the second hard cover section - starboard side perspective;
[0165] Figure 6 This is a schematic diagram of the coordinates of the second hard cover;
[0166] The observation ports for ship types and light signals on the second hard cover 2 include a nineteenth observation port 119, a twentieth observation port 120, a twenty-first observation port 121, a twenty-second observation port 122, a twenty-third observation port 123, a twenty-fourth observation port 124, a twenty-fifth observation port 125, a twenty-sixth observation port 126, a twenty-seventh observation port 127, a twenty-eighth observation port 128, a twenty-ninth observation port 129, a thirtieth observation port 130, a thirty-first observation port 131, a thirty-second observation port 132, and a thirty-third observation port 133;
[0167] The nineteenth observation port 119, the twentieth observation port 120, the twenty-first observation port 121, the twenty-third observation port 123, the twenty-fourth observation port 124, the twenty-fifth observation port 125, the twenty-sixth observation port 126, and the twenty-seventh observation port 127 are all vertical bar-shaped rounded corner holes, and are all vertically arranged. The four rounded corner radii of each observation port hole are the same, which is 0.1495r;
[0168] The 22nd observation port 122 is circular with a diameter of 0.1460r;
[0169] The nineteenth observation port 119 , the twentieth observation port 120 , the twenty-first observation port 121 , the twenty-second observation port 122 and the twenty-third observation port 123 define the positions of the stern viewing angles for different ship types or states;
[0170] The twenty-fourth observation port 124 limits the position of the viewing angle of the stern of the towed vessel;
[0171] The twenty-ninth observation port 129, the thirty-first observation port 131, and the thirty-third observation port 133 are all horizontal bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.103r;
[0172] The twenty-fifth observation port 125, the twenty-sixth observation port 126, the twenty-seventh observation port 127, the twenty-eighth observation port 128, the twenty-ninth observation port 129 and the thirtieth observation port 130 define starboard viewing positions under different ship types or states;
[0173] The thirty-first observation port 131 is in the shape of an ellipse with a major axis r;
[0174] The 28th observation port 128, the 30th observation port 130 and the 32nd observation port 132 are circular with a radius of 0.1475r;
[0175] The thirty-first observation port 131, the thirty-second observation port 132, and the thirty-third observation port 133 define the starboard viewing position of the towed vessel;
[0176] The positions of the observation ports for the ship type and light signal of the second hard cover 2 are determined by establishing a coordinate system with the lower left corner of the second hard cover 2 as the center, the length direction of the second hard cover 2 as the X-axis, and the width direction of the second hard cover 2 as the Y-axis to determine the center positions and sizes of the nineteenth observation port 119, the twentieth observation port 120, the twenty-first observation port 121, the twenty-second observation port 122, the twenty-third observation port 123, the twenty-fourth observation port 124, the twenty-fifth observation port 125, the twenty-sixth observation port 126, the twenty-seventh observation port 127, the twenty-eighth observation port 128, the twenty-ninth observation port 129, the thirtieth observation port 130, the thirty-first observation port 131, the thirty-second observation port 132, and the thirty-third observation port 133, as follows:
[0177] The center position of the nineteenth observation port 119 is X=20.971r, Y=11.588r, the width is 0.299r, and the height is 0.888r;
[0178] The center position of the twentieth observation port 120 is X=21.241r, Y=10.480r, the width is 0.299r, and the height is 1.146r;
[0179] The center position of the twenty-first observation port 121 is X=20.682r, Y=9.771r, the width is 0.299r, and the height is 1.378r;
[0180] The center position of the twenty-second observation port 122 is X=20.950r, Y=8.798r, the width is 0.292r, and the height is 0.292r;
[0181] The center position of the twenty-third observation port 123 is X=20.963r, Y=8.080r, the width is 0.299r, and the height is 0.564r;
[0182] The center position of the twenty-fourth observation port 124 is X=18.429r, Y=7.515r, the width is 0.299r, and the height is 0.564r;
[0183] The center position of the twenty-fifth observation port 125 is X=19.850r, Y=5.737r, the width is 0.299r, and the height is 0.813r;
[0184] The center position of the twenty-sixth observation port 126 is X=20.121r, Y=4.621r, the width is 0.299r, and the height is 1.126r;
[0185] The center position of the twenty-seventh observation port 127 is X=19.561r, Y=3.940r, the width is 0.299r, and the height is 1.396r;
[0186] The center position of the twenty-eighth observation port 128 is X=21.184r, Y=2.957r, the width is 0.295r, and the height is 0.295r;
[0187] The center position of the twenty-ninth observation port 129 is X=20.374r, Y=2.564r, the width is 0.267r, and the height is 0.206r;
[0188] The center position of the 30th observation port 130 is X=16.113r, Y=2.331r, the width is 0.295r, and the height is 0.295r;
[0189] The center position of the thirty-first observation port 131 is X=14.66r, Y=1.647r, the width is 0.295r, and the height is 0.206r;
[0190] The center position of the thirty-second observation port 132 is X=10.657r, Y=2.056r, the width is 0.295r, and the height is 0.295r;
[0191] The center position of the thirty-third observation port 133 is X=10.150r, Y=1.829r, the width is 0.295r, and the height is 0.206r;
[0192] The center position of the second state entry observation port 9 is X=0.829r, Y=7.24r, the width is 0.299r, and the height is 9.529r.
[0193] The first observation port 101 is connected to the nineteenth observation port 119, the second observation port 102 is connected to the twentieth observation port 120, the third observation port 103 is connected to the twenty-first observation port 121, the fourth observation port 104 is connected to the twenty-second observation port 122, the tenth observation port 110 is connected to the twenty-fifth observation port 125, the eleventh observation port 111 is connected to the twenty-sixth observation port 126, the twelfth observation port 112 is connected to the twenty-seventh observation port 127, the thirteenth observation port 113 is connected to the twenty-eighth observation port 128, the fourteenth observation port 114 is connected to the twenty-ninth observation port 129, the fifteenth observation port 115 is connected to the thirtieth observation port 130, the sixteenth observation port 116 is connected to the thirty-first observation port 131, the seventeenth observation port 117 is connected to the thirty-second observation port 132, and the eighteenth observation port 118 is connected to the thirty-third observation port 133. Figure 3 and Figure 4 The first state entry observation port 8 is the corresponding coincidence state, that is, Figure 3 and Figure 4 After assembly, the above-mentioned hole positions correspond one to one;
[0194] Figure 7 Schematic diagram comparing the first hard cover and the second hard cover; (a) is the first hard cover, (b) is the second hard cover;
[0195] Figure 8 It is a schematic diagram of a hard pallet;
[0196] Figure 9 This is a schematic diagram of the lights that an uncontrolled vessel should display when moving across the water (from the bow and port perspectives);
[0197] Figure 10 This is a diagram showing the lights of the uncontrolled ship moving across the water (from the bow and port perspectives) when the first hard cover is attached.
[0198] Figure 11 This is a diagram of the lights to be displayed by a power-driven vessel underway (from the bow and port perspectives) limited by its draught;
[0199] Figure 12 A schematic diagram of the lights of a power-driven vessel underway (both from the bow and port sides) as shown through the observation port when the first hard cover is attached;
[0200] Figure 13 It is a schematic diagram (from the bow and port perspectives) of the lights that should be displayed by an uncontrolled vessel when moving across the water and by a power-driven vessel underway limited by its draft, combined on a rigid pallet.
[0201] Figure 14 Schematic diagram of the lights of a vessel with limited maneuverability when moving through the water when the first hard cover is in place (from the bow and port perspectives);
[0202] Figure 15 This is a schematic diagram (from the bow and port perspectives) of the lights that should be displayed by an uncontrolled vessel when it is moving across the water, a power-driven vessel underway limited by its draft, and a vessel with restricted maneuverability when it is moving across the water, assembled on a hard pallet.
[0203] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An auxiliary teaching aid that can be used for demonstrating the International Regulations for Preventing Collisions at Sea, characterized by: include: Cover assembly and hard cardboard; One side of the hard cardboard is provided with a ship type and signal light area for displaying different ship types and signal light types; the other side of the hard cardboard is provided with a ship status entry area for displaying the status of all ships; The cover assembly includes a first hard cover and a second hard cover; the first hard cover and the second hard cover are arranged in correspondence with each other at a certain distance; A plurality of viewing ports are provided on one side of the first hard cover for displaying the ship type and light type of different ship types or states from the bow perspective and the port perspective when the hard card moves within the cover assembly; a first status entry viewing port is provided on the other side of the first hard cover for displaying the ship status entry when the hard card moves within the cover assembly; A second status entry viewing port is provided on one side of the second hard cover for displaying the ship status entry when the hard card moves inside the cover assembly; A plurality of observation ports are provided on the other side of the second hard cover for displaying the ship type and light type of different ship types or states from the stern perspective and the starboard perspective when the hard card moves inside the cover assembly.
2. The auxiliary teaching aid for demonstrating the International Regulations for Preventing Collisions at Sea according to claim 1, characterized in that: The four corners of the first hard cover and the second hard cover are fixed by letter-shaped buckles.
3. The auxiliary teaching aid for demonstrating the International Regulations for Preventing Collisions at Sea according to claim 1, characterized in that: The observation ports for the ship type and light signal shape of the first hard cover include a first observation port, a second observation port, a third observation port, a fourth observation port, a fifth observation port, a sixth observation port, a seventh observation port, an eighth observation port, a ninth observation port, a tenth observation port, an eleventh observation port, a twelfth observation port, a thirteenth observation port, a fourteenth observation port, a fifteenth observation port, a sixteenth observation port, a seventeenth observation port, and an eighteenth observation port; The first observation port, the second observation port, the third observation port, the fourth observation port, the sixth observation port, and the fifth observation port define the positions of the bow viewing angles for different ship types or states; The seventh observation port, the eighth observation port, and the ninth observation port define the position of the bow viewing angle of the towed vessel; The tenth observation port, the eleventh observation port, the twelfth observation port, the thirteenth observation port, the fourteenth observation port, and the fifteenth observation port define port side viewing positions under different ship types or states; The sixteenth observation port, the seventeenth observation port, and the eighteenth observation port define the viewing position of the port side of the towed vessel; The first observation port, the second observation port, the third observation port, the eighth observation port, the tenth observation port, the eleventh observation port, the twelfth observation port and the first status entry observation port are in the shape of vertical bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.1495r; The seventh observation port is a horizontal bar-shaped rounded hole position, and the four rounded corner radii of the seventh observation port 107 are the same, which is 0.111r; The fourth observation port is circular; the radius of the fourth observation port is the width of the first state entry observation port; the diameter of the fourth observation port is 0.1460r; The fifth observation port, the sixth observation port, the ninth observation port, the fourteenth observation port, the sixteenth observation port, and the eighteenth observation port are all horizontal bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.103r; The sixteen observation ports are elliptical, and the major axis of the ellipse is r; The thirteenth observation port, the fifteenth observation port, and the seventeenth observation port are circular in shape, with a radius of 0.1475r.
4. The auxiliary teaching aid for demonstrating the International Regulations for Preventing Collisions at Sea according to claim 1, characterized in that: The positions of the observation ports for the ship type and light signal shape of the first hard cover are determined by establishing a coordinate system with the lower left corner of the first hard cover as the center, the length direction of the first hard cover as the X-axis, and the width direction of the first hard cover as the Y-axis to determine the positions and sizes of the first observation port, the second observation port, the third observation port, the fourth observation port, the fifth observation port, the sixth observation port, the seventh observation port, the eighth observation port, the ninth observation port, the tenth observation port, the eleventh observation port, the twelfth observation port, the thirteenth observation port, the fourteenth observation port, the fifteenth observation port, the sixteenth observation port, the seventeenth observation port, and the eighteenth observation port, as follows: The center position of the first observation port is X = 1.869r, Y = 11.588r, the width is 0.299r, and the height is 0.888r; The center position of the second observation port is X = 1.599r, Y = 10.480r, the width is 0.299r, and the height is 1.146r; The center position of the third observation port is X = 2.158r, Y = 9.771r, the width is 0.299r, and the height is 1.378r; The center position of the fourth observation port is X=1.890r, Y=8.798r, the width is 0.292r, and the height is 0.292r; The center position of the fifth observation port is X = 0.779r, Y = 8.390r, the width is 0.313r, and the height is 0.206r; The center position of the sixth observation port is X = 2.973r, Y = 8.573r, the width is 0.313r, and the height is 0.206r; The center position of the seventh observation port is X = 3.542r, Y = 7.493r, the width is 0.295r, and the height is 0.222r; The center position of the eighth observation port is X = 4.486r, Y = 8.047r, the width is 0.299r, and the height is 0.564r; The center position of the ninth observation port is X = 5.448r, Y = 7.684r, the width is 0.295r, and the height is 0.206r; The center position of the tenth observation port is X = 2.990r, Y = 5.737r, the width is 0.299r, and the height is 0.813r; The center position of the eleventh observation port is X = 2.719r, Y = 4.621r, the width is 0.299r, and the height is 1.126r; The center position of the twelfth observation port is X = 3.279r, Y = 3.940r, the width is 0.299r, and the height is 1.396r; The center position of the thirteenth observation port is X=1.656r, Y=2.957r, the width is 0.295r, and the height is 0.295r; The center position of the fourteenth observation port is X = 2.466r, Y = 2.564r, the width is 0.267r, and the height is 0.206r; The center position of the fifteenth observation port is X = 6.727r, Y = 2.331r, the width is 0.295r, and the height is 0.295r; The center position of the sixteenth observation port is X=8.180r, Y=1.647r, the width is 0.295r, and the height is 0.206r; The center position of the seventeenth observation port is X = 12.183r, Y = 2.056r, the width is 0.295r, and the height is 0.295r; The center position of the eighteenth observation port is X = 12.690r, Y = 1.829r, the width is 0.295r, and the height is 0.206r; The center position of the observation port of the first state entry is X=22.011r, Y=7.24r, the width is 0.299r, and the height is 9.529r.
5. The auxiliary teaching aid for demonstrating the International Regulations for Preventing Collisions at Sea according to claim 1, characterized in that: The first hard cover and the second hard cover are rectangular, and the long sides of the first hard cover and the second hard cover are provided with middle pressing strips.
6. The auxiliary teaching aid for demonstrating the International Regulations for Preventing Collisions at Sea according to claim 1, characterized in that: The ship type and light signal observation ports of the second hard cover include the 19th observation port, the 20th observation port, the 21st observation port, the 22nd observation port, the 23rd observation port, the 24th observation port, the 25th observation port, the 26th observation port, the 27th observation port, the 28th observation port, the 29th observation port, the 30th observation port, the 31st observation port, the 32nd observation port and the 33rd observation port; The nineteenth observation port, the twentieth observation port, the twenty-first observation port, the twenty-second observation port, and the twenty-third observation port define the positions of the stern viewing angles for different ship types or states; The twenty-fourth observation port limits the position of the stern viewing angle of the towed vessel; The twenty-fifth observation port, the twenty-sixth observation port, the twenty-seventh observation port, the twenty-eighth observation port, the twenty-ninth observation port and the thirtieth observation port define starboard viewing positions under different ship types or conditions; The thirty-first observation port, the thirty-second observation port, and the thirty-third observation port define the starboard viewing position of the towed vessel; The nineteenth observation port, the twentieth observation port, the twenty-first observation port, the twenty-third observation port, the twenty-fourth observation port, the twenty-fifth observation port, the twenty-sixth observation port, and the twenty-seventh observation port all adopt vertical bar-shaped rounded corner holes, all of which are vertically arranged. The radius of the four rounded corners of each observation port hole is the same, which is 0.1495r; The 22nd observation port is circular with a diameter of 0.1460r; The 29th, 31st and 33rd observation ports are all horizontal bar-shaped rounded corner holes, and the four rounded corner radii of each of the above observation port holes are the same, which is 0.103r; The thirty-first observation port is in the shape of an ellipse with a major axis of r; The 28th observation port, the 30th observation port and the 32nd observation port are circular, and the radius is 0.1475r.
7. The auxiliary teaching aid for demonstrating the International Regulations for Preventing Collisions at Sea according to claim 1, characterized in that: The positions of the observation ports for the ship type and light signal shape of the second hard cover are determined by establishing a coordinate system with the lower left corner of the second hard cover as the center, the length direction of the second hard cover as the X-axis, and the width direction of the second hard cover as the Y-axis to determine the center positions and sizes of the nineteenth observation port, the twentieth observation port, the twenty-first observation port, the twenty-second observation port, the twenty-third observation port, the twenty-fourth observation port, the twenty-fifth observation port, the twenty-sixth observation port, the twenty-seventh observation port, the twenty-eighth observation port, the twenty-ninth observation port, the thirtieth observation port, the thirty-first observation port, the thirty-second observation port, and the thirty-third observation port, as follows: The center position of the nineteenth observation port is X = 20.971r, Y = 11.588r, the width is 0.299r, and the height is 0.888r; The center position of the 20th observation port is X = 21.241r, Y = 10.480r, the width is 0.299r, and the height is 1.146r; The center position of the 21st observation port is X = 20.682r, Y = 9.771r, the width is 0.299r, and the height is 1.378r; The center position of the 22nd observation port is X=20.950r, Y=8.798r, the width is 0.292r, and the height is 0.292r; The center position of the twenty-third observation port is X = 20.963r, Y = 8.080r, the width is 0.299r, and the height is 0.564r; The center position of the 24th observation port is X = 18.429r, Y = 7.515r, the width is 0.299r, and the height is 0.564r; The center position of the 25th observation port is X = 19.850r, Y = 5.737r, the width is 0.299r, and the height is 0.813r; The center position of the 26th observation port is X = 20.121r, Y = 4.621r, the width is 0.299r, and the height is 1.126r; The center position of the 27th observation port is X = 19.561r, Y = 3.940r, the width is 0.299r, and the height is 1.396r; The center position of the 28th observation port is X = 21.184r, Y = 2.957r, the width is 0.295r, and the height is 0.295r; The center position of the twenty-ninth observation port is X = 20.374r, Y = 2.564r, the width is 0.267r, and the height is 0.206r; The center position of the 30th observation port is X = 16.113r, Y = 2.331r, the width is 0.295r, and the height is 0.295r; The center position of the thirty-first observation port is X = 14.66r, Y = 1.647r, the width is 0.295r, and the height is 0.206r; The center position of the thirty-second observation port is X = 10.657r, Y = 2.056r, the width is 0.295r, and the height is 0.295r; The center position of the thirty-third observation port is X = 10.150r, Y = 1.829r, the width is 0.295r, and the height is 0.206r; The center position of the second state entry observation port is X=0.829r, Y=7.24r, the width is 0.299r, and the height is 9.529r.