Ship safety navigation support system

Abstract

This system helps enable your vessel to quickly identify other vessels that have called in when there is a risk of collision with other vessels in the vicinity. [Solution] The system includes: a voice-to-text conversion unit that converts voice information from multiple other ships received by the ship's maritime radio into text information and stores the voice information and text information together for each other ship; a ship's call board end that analyzes each of the text information stored in the voice-to-text conversion unit to determine whether there is text information that matches the ship's name or call sign; a calling ship designation unit that, if there is text information that matches the ship's name or call sign via the ship's call board end, designates the other ship that called the ship from the text information for each other ship stored in the voice-to-text conversion unit; and a calling ship identification display unit that, if the calling ship designation unit designates the other ship that called the ship, displays the image of the designated other ship on the EDICS or RADAR screen differently from the images of multiple other ships so as to be distinguishable.

Description

【Technical Field】 【0001】 The present invention relates to a ship safety navigation support system that can assist a ship in quickly recognizing another ship that has called when a danger at sea or a risk of collision with other surrounding ships occurs in a situation where the own ship cannot be clearly recognized, and can prevent marine accidents in advance. 【Background Art】 【0002】 Generally, in order to prevent the occurrence of marine accidents, most ships are equipped with an Automatic Identification System (AIS) adopted by the International Maritime Organization (IMO). Such an AIS is a device that automatically transmits and receives information such as the position and identification information of ships using radio waves. 【0003】 That is, through wireless communication technology, AIS enables real-time grasping of the positions and movement routes of all ships operating in the seas around the world, and supports nearby ships to quickly respond in case of an accident or emergency situation during navigation. It is also utilized for various purposes such as navigation systems, route display facility management, and search and rescue activities. 【0004】 Both foreign ships passing through the coastal waters of the Republic of Korea and domestic ships entering and leaving ports are obliged to install AIS. In particular, since January 2023, fishing boats are also obliged to install AIS. Although there are differences among countries, globally, the AIS installation standards are gradually being strengthened. In the case of small ships and leisure boats for which it is difficult to install AIS, at least V-PASS and FLOTTER are installed as alternatives to AIS functions. 【0005】 Such an AIS transmits various identification information such as the magnetic position, speed, course, ship name, call sign, and IMO number of the ship through a very high frequency band frequency (VHF Ch 16). As a result, not only the position of the ship but also detailed operation information can be easily grasped from an onshore control center or other ships. 【0006】 Furthermore, AIS (Automatic Identification System) has a GPS-based floating function and a navigation function that works in conjunction with Electronic Navigation Systems (EDICS). It can sound proximity warnings to prevent collisions with other vessels at close range, and can also provide guidance services to distant destinations. In addition, it can provide useful information for decision-making by offering several additional notification functions, such as weather information, fuel level warnings, and seaweed avoidance warnings. 【0007】 Furthermore, AIS has four main modes: firstly, AIS mode displays general ship-related information; secondly, Search mode shows a list of ships visible on the surrounding radar (RADAR) screen; and clicking on each allows for detailed ship information retrieval. Thirdly, there is a voice communication mode, and fourthly, a MOB (Mobile Offline) mode, which is mainly used for sending emails when internet connectivity is unavailable, and allows for the transfer or reception of specific point coordinates on the electronic chart (EDICS) to or from the server-side computer. 【0008】 Conventional technologies that apply such AIS technology include Korean Registered Patent No. 10-1800453, "A ship collision avoidance system and method utilizing AIS information," and Korean Registered Patent No. 10-2596943, "AIS operation data-based collision risk area display device and ship collision avoidance system utilizing the same." In the case of Korean Registered Patent No. 10-2543394, "Automatic safe navigation support system for ships," there is a technology that aims to prevent collision accidents by identifying dangers at sea in advance and informing other nearby ships of the risk of collision through the transmission of synthesized voice messages without human intervention. 【0009】 While this does not negate the effectiveness of conventional technologies such as the display of collision-prone vessels or areas based on AIS, or the transmission of synthesized voice messages in the event of a collision, these technologies are not particularly effective if the vessel itself recognizes the collision risk of another vessel first and avoids it. Secondly, in coastal areas and ports within the control zone, there are many other vessels close to one's own vessel, making it difficult to clearly define the collision risk between one's own vessel and other vessels. 【0010】 Rather, the biggest problem is that when another ship calls your ship via maritime radio, it is difficult to quickly determine where the call is coming from because there are many other ships in the vicinity. 【0011】 In other words, communication and control are carried out by switching to the internationally shared channel 16 (VHF Ch 16) or to the channels around each VTS. However, if there are many other ships around your vessel, you need to listen to the voice signal from other ships via the maritime radio, click or touch each other ship displayed on EDICS or RADAR individually, and then confirm the name and call sign of the calling ship. However, when there are many other ships around your vessel, there is a problem that this process of confirming and specifying the calling ship takes a long time. 【0012】 Furthermore, if neither your ship nor the other ship is of your country, and at least one of them is a foreign ship, you can use maritime English, which is the international common language. However, if you use different languages, it will be difficult to recognize calls from other ships, and even if you do recognize them, it will be difficult to communicate with each other via radio. For example, in each country's national waters, you can communicate not only in maritime English but also in each country's native language. [Overview of the Initiative] [Problems that the invention aims to solve] 【0013】 The objective of the present invention, devised to solve the aforementioned problems, is to provide a safe navigation support system for ships that can help a ship quickly recognize other ships that have called in when there is a danger at sea or a risk of collision with other ships in the vicinity, even when the ship itself cannot clearly recognize the danger, and that can help facilitate radio communication between ships even when the ship and the other ship use different languages, thereby preventing maritime accidents. [Means for solving the problem] 【0014】 To achieve the above objectives, the ship safety navigation support system according to the present invention includes EDICS and RADAR, which display navigation information on their respective screens in conjunction with GPS and AIS, along with various sensors installed on the ship, and a maritime radio that transmits and receives voice signals between the ship and other ships. The ship safety navigation support system includes a voice-to-text conversion unit that converts voice information from multiple other ships received by the ship's maritime radio into text information and stores the voice information and text information together for each other ship, and analyzes each of the text information stored in the voice-to-text conversion unit to determine the ship's name or call sign. A ship safety navigation support system comprising: a self-call board end that determines whether or not there is character information that matches the call sign; a calling other ship designation unit that, if there is character information that matches the ship's name or call sign via the self-call board end, designates the other ship that called the self-calling ship from the character information of each other ship stored in the voice-to-text conversion unit; and a calling other ship identification display unit that, when the calling other ship designation unit designates the other ship that called the self-calling ship, displays the image of the designated other ship on the EDICS or RADAR screen in a way that distinguishes it from the images of multiple other ships. 【0015】 Furthermore, the calling vessel identification display unit is characterized by displaying the name and call sign of the designated other vessel that called the other vessel as text images next to the image of the other vessel that called the other vessel. 【0016】 Furthermore, the calling other vessel identification display unit is characterized by displaying a speaker-shaped icon along with the image of the designated other vessel that called the other vessel. 【0017】 Furthermore, the calling other vessel identification display unit is characterized in that, when the speaker-shaped icon is clicked or touched, it re-outputs the voice information stored in the voice-to-text conversion unit via the ship's own maritime radio. 【0018】 Furthermore, the system is characterized by further including a character translation storage unit that, if the character information stored in the voice-to-text conversion unit is not in the ship's native language or maritime English, translates it into the ship's native language and maritime English and stores it as character translation information. 【0019】 In addition, the called other-ship identification display unit is characterized in that, next to the image of the designated other ship that called the own ship, it displays not only the text images of the ship name and call sign of the other ship, but also the text image of the character translation information stored in the character translation storage unit. 【0020】 It further includes a voice synthesis storage unit that synthesizes the character translation information stored in the character translation storage unit into voice translation information and stores it. 【0021】 In addition, when the text image of the character translation information is clicked or touched, the called other-ship identification display unit is characterized in that it outputs the voice translation information stored in the voice synthesis storage unit via the marine radio of the own ship. 【Advantages of the Invention】 【0022】 The ship safety navigation support system according to the present invention supports the own ship to quickly recognize the other ship that called when a marine danger or a collision danger with surrounding other ships occurs in a situation where the own ship cannot clearly recognize, and helps to facilitate mutual radio communication even when the own ship and the other ship use different languages, thereby having the effect of preventing marine accidents in advance. 【Brief Description of the Drawings】 【0023】 [Figure 1] It is a configuration diagram showing an embodiment of the ship safety navigation support system according to the present invention. [Figure 2] It is a configuration diagram showing the operation process of the voice-character conversion unit in the embodiment of FIG. 1. [Figure 3] It is a configuration diagram showing the operation process of the end part of the own-ship call board in the embodiment of FIG. 1 based on the embodiment of FIG. 2. [Figure 4] It is a configuration diagram showing the operation process of the called other-ship identification display unit in the embodiment of FIG. 1 based on the embodiment of FIG. 3. [Figure 5] It is a configuration diagram showing another operation process of the called other-ship identification display unit in the embodiment of FIG. 4. [Figure 6] It is a configuration diagram showing another operation process of the calling other ship identification display section among the embodiments of FIG. 4. [Figure 7] It is a configuration diagram showing an enlarged view of the 'A' part displayed on the EDICS screen among the embodiments of FIG. 6, and showing the operation processes of the voice character conversion section and the marine radiotelegraph when a speaker-shaped icon is clicked or touched. [Figure 8] It is a configuration diagram showing another embodiment of the ship safety navigation support system according to the present invention. [Figure 9] It is a configuration diagram showing the operation processes of the voice character conversion section and the character translation storage section among the embodiments of FIG. 8. [Figure 10] It is a configuration diagram showing the operation process of the calling other ship identification display section among the embodiments of FIG. 8 based on the embodiment of FIG. 9. [Figure 11] It is a configuration diagram showing the operation processes of the character translation storage section and the voice synthesis storage section in the embodiment of FIG. 8 based on the embodiment of FIG. 9. [Figure 12] Based on the embodiment of FIG. 11, it is an enlarged view of the 'B' part displayed on the EDICS screen among the embodiments of FIG. 10, and it is a configuration diagram showing the operation processes of the voice synthesis storage section and the marine radiotelegraph when a text image of character translation information is clicked or touched. 【Embodiments for Carrying Out the Invention】 【0024】 Hereinafter, preferred embodiments of the ship safety navigation support system according to the present invention will be described in detail with reference to the accompanying drawings. 【0025】 The ship's safe navigation support system according to the present invention includes, as shown in Figure 1, EDICS130 and RADAR140 which work in conjunction with GPS120 and AIS110 along with various sensors installed on the ship to display navigation information on their respective screens, and a marine radio 150 which transmits and receives voice signals between the ship (MS) and multiple other ships (YS), and further includes a voice-to-text conversion unit 210, a ship's call board end 220, a call to other ship designation unit 230, and a call to other ship identification display unit 240. Furthermore, as shown in Figure 8, it may further include a character translation storage unit 250 and a voice synthesis storage unit 260. 【0026】 Various sensors are installed on ships for navigation, including magnetic compasses, gyrocompasses, echo sounders, speed and distance measuring devices, rate of turn indicators, and rudder angle indicators. 【0027】 Furthermore, AIS110 is an Automatic Identification System that automatically displays navigational information such as the ship's name, route, speed, and position, while GPS120 is a Global Positioning System that uses artificial satellites to accurately determine one's position anywhere in the world. 【0028】 In addition, EDICS130 is an Electronic Chart Display & Information System, a device that displays chart information and surrounding area information via a computer, and RADAR140 is a Radio Detecting and Ranging device that uses the characteristics of radio waves to detect objects and determine their direction and distance. 【0029】 Marine Radio 150 is a Marine Radio Communication Device (VHF) radio designed for use at sea rather than on land, and uses VHF (Very High Frequency) electromagnetic waves in the 100 MHz band (particularly 156-174 MHz). For example, the internationally shared channel used by all ships is channel 16 (VHF Ch 16, 156.8 MHz), and national or regional Vessel Traffic Service (VTS) communicates and controls by calling each ship through the internationally shared channel and then moving to the channel around each VTS. 【0030】 The various sensors mentioned above, AIS110, GPS120, EDICS130, RADAR140, and marine radio 150, are essential components for ship navigation, and conventional technologies that utilize these devices to add various functions for more convenient and safer navigation are widely known. Against this backdrop, the present invention assists the ship (MS) in quickly recognizing other ships (YS) that have called in when a maritime hazard or collision risk with other ships (YS) occurs in a situation that the MS cannot perceive. 【0031】 For example, when another vessel (YS) calls out to your vessel (MS), it will state your vessel's name and call sign, then the other vessel's name and call sign, and finally request collision avoidance. At this time, your vessel (MS) must hear the other vessel's call and confirm its location, name, and call sign. To do this, your vessel (MS) must look at the EDICS130 and RADRAR150 screens and click or touch the image of the other vessel (YS) displayed on the screen to check its navigation information. In this case, as shown in Figure 1, if there are many other ships n (YS1 to YS5) around the own ship (MS), it is difficult to recognize the other ship 3 (YS3) that has called in all at once. Therefore, the ship (MS) has to click or touch each image of the other ships n (YS1 to YS5) displayed on the screen to confirm them, which inevitably takes time for the ship (MS) to recognize the other ship 3 (YS3) that has called in. 【0032】 Therefore, in order to enable the MS to quickly recognize another vessel 3 (YS3) that has called in when a maritime hazard or collision risk with other nearby vessels n (YS1 to YS5) occurs in a situation that the MS cannot perceive, the present invention includes a voice-to-text conversion unit 210, an MS call board end 220, a calling other vessel designation unit 230, and a calling other vessel identification display unit 240, as shown in Figure 1. 【0033】 As shown in Figure 2, the speech-to-text conversion unit 210 converts speech information received by the MS's (MS) maritime radio 150 from multiple other ships (YS1-YS5) into text information, and stores the speech information (Speech_n) and text information (Text_n) together for each of the other ships (YS1-YS5). In other words, the speech-to-text conversion unit 210 is a speech recognition (STT) technology, a technology that takes speech information (Speech) as input and obtains text information (Text), which is the corresponding syntax. Currently, there are STT models using deep learning such as WaveNet, and there are also pre-trained and freely distributed speech recognition AI technologies such as Google Web, Google Cloud, Bing, Houndify, IBM, Wit, and Sphinx. 【0034】 For example, as shown in Figure 2, the speech-to-text conversion unit 210 converts the ship name (Name_1) and call sign (Call Sign_1) of other ship 1 (YS1), and the ship name and call sign of the ship called by other ship 1 (YS1), into speech information (Speech_1) and text information (Text_1), and stores them together. Furthermore, this processing is converted and stored separately for other ships 2 (YS2), 3 (YS3), 4 (YS4), and 5 (YS5). 【0035】 As shown in Figure 3, the end portion 220 of the ship's call plate analyzes each of the character information (Text_1~5) stored in the voice-to-text conversion unit 210 to determine whether there is any character information (Text_3) that matches the ship's name (Name_Own) or call sign (Call Sign_Own) of the ship itself (MS). For example, as shown in Figure 3, the character information (Text_1, 2, 4, 5) of other ships 1 (YS1), 2 (YS2), 4 (YS4), and 5 (YS5) does not match the ship's name (Name_Own) or call sign (Call Sign_Own) of the ship itself (MS), but the character information (Text_3) of other ship 3 (YS3) matches that of the ship itself (MS). 【0036】 At this time, as shown in Figure 3, if there is character information (Text_3) that matches the ship name (Name_Own) or call sign (Call Sign_Own) of the own ship (MS) via the self-ship call plate end 220, the voice-to-text conversion unit 210 selects the other ship (YS3) that called the self-ship (MS) from the character information (Text_n) for each other ship (YSn) stored in the voice-to-text conversion unit 210. 【0037】 Next, as shown in Figure 4, when the other vessel (YS3) that called the local vessel (MS) is designated by the other vessel designation unit 230, the EDICS 130 or RADAR 140 screen displays the image of the designated other vessel (YS3) differently from the images of multiple other vessels (YS1, 2, 4, 5). For example, there are various methods to enhance identification, such as displaying the image of a frequently used other vessel (YS) in a triangular shape with a different color, or making it flicker. 【0038】 Therefore, as shown in Figures 4 and 5, even when there are many other vessels (YS1 to YS5) around the own vessel (MS), if other vessel 3 (YS3) calls to the own vessel (MS), the image of the calling vessel 3 (YS3) will be displayed on the EDICS130 or RADAR140 screen differently from the other vessels (YS1, 2, 4, 5), allowing for intuitive identification. By clicking or touching the image of the identified other vessel 3 (YS3), the name (Name_3) and call sign (Call Sign_3) of other vessel 3 (YS3) can be immediately identified, allowing the own vessel (MS) to quickly respond to and address the call from other vessel 3 (YS3). 【0039】 Furthermore, when another vessel 3 (YS3) calls the local vessel (MS), the local vessel can immediately find out the name (Name_3) and call sign (Call Sign_3) of the other vessel 3 (YS3) without having to click or touch the image of the other vessel 3 (YS3) displayed on the EDICS130 or RADAR140 screen. In other words, as shown in Figure 5, the calling other vessel identification display unit 240 can display the name (Name_3) and call sign (Call Sign_3) of the other vessel (YS3) as text images next to the image of the designated other vessel (YS3) that called the local vessel (MS). 【0040】 While the aforementioned speech-to-text conversion technology, or speech recognition technology, has achieved very high accuracy due to advancements in AI technology, it is necessary for the local ship (MS) to listen to the actual speech information (Speech_3) from the other ship 3 (YS3) that made the call in order to verify whether the voice information (Speech_3) from the other ship 3 (YS3) actually matches. 【0041】 To this end, the calling other vessel identification display unit 240 can display a speaker-shaped icon on top of the image of the designated other vessel (YS3) that called the ship (MS), as shown in Figure 6. This speaker-shaped icon display has the function of displaying the image of the other vessel 3 (YS3) differently so as to distinguish it from multiple other vessels (YS1, 2, 4, 5), and also performs an input function for listening to the voice information (Speech_3) of the other vessel 3 (YS3), which will be described later. 【0042】 In other words, as shown in Figures 6 and 7, when the speaker-shaped icon is clicked or touched, the voice information (Speech_3) stored in the voice-to-text conversion unit 210 is re-output via the ship's (MS) onboard radio 150. Therefore, from the perspective of the ship (MS), it is possible to quickly recognize the other ship 3 (YS3) that has called, quickly confirm the ship name (Name_3) and call sign (Call Sign_3) of the other ship 3 (YS3) in order to respond to or deal with the other ship's call, and re-verify whether the actual voice information (Speech_3) of the other ship 3 (YS3) matches the converted text information (Text_3), thus preventing miscommunication between the two ships. 【0043】 On the other hand, this invention helps to facilitate wireless communication between ships, even when the own ship (MS) and another ship (YS) use different languages, thereby helping to prevent maritime accidents. 【0044】 For example, the speech-to-text conversion technology, or speech recognition technology, of the aforementioned speech-to-text conversion unit 210 primarily targets the native language of the ship (MS) and English, which is an international common language. However, since ships inevitably encounter ships from other countries during their operation, it must be able to assist with radio communication with other ships (YS) that use languages ​​other than the native language of the ship (MS) or English. For this purpose, as shown in Figures 8 to 12, a character translation storage unit 250 and a speech synthesis storage unit 260 can be further included. 【0045】 In other words, as shown in Figures 8 and 9, the text translation storage unit 250 translates the text information (Text_n) stored in the speech-to-text conversion unit 210 into the native language of the ship (MS) and maritime English, and stores it as text translation information (Trans Text_n), if the text information (Text_n) is not in the native language of the ship (MS) or maritime English. 【0046】 For example, as shown in Figure 9, the speech-to-text conversion unit 210 converts the ship name (Name_1) and call sign (Call Sign_1) of other ship 1 (YS1), and the ship name and call sign of the ship called by other ship 1 (YS1), into speech information (Speech_1) and text information (Text_1) and stores them together. If the text information (Text_1) of other ship 1 (YS1) is not in the native language or interpreted English, the text translation storage unit 250 translates the text information (Text_1) of other ship 1 (YS1) into the native language and interpreted English of the own ship (MS) and stores it as text translation information (Trans Text_1). Furthermore, this processing is translated and stored separately for other ships 2 (YS2), 3 (YS3), 4 (YS4), and 5 (YS5). 【0047】 In this case, as shown in Figure 10, the calling vessel identification display unit 240 can display not only the text images of the designated other vessel (YS3) that called the ship (MS), but also the text image of the text translation information (Trans Text_3) stored in the text translation storage unit 250, next to the image of the other vessel (YS3) that called the ship (MS). 【0048】 Furthermore, as shown in Figures 8 and 11, the speech synthesis storage unit 260 synthesizes the text translation information (Trans Text_n) stored in the text translation storage unit 250 into speech translation information (Trans Speech_n) and stores it. In other words, the speech synthesis storage unit 260 is a speech synthesis (Speech Synthesis) technology, specifically a TTS (Text to Speech) technology, in which text information (Text) is input and the machine automatically generates corresponding sound wave speech information (Speech). Simply put, it is a technology in which the speech of one person selected as a model is recorded, divided into certain speech units, coded, and input into a synthesizer, but according to instructions, only the necessary speech units are combined again to artificially create speech. From this conventional waveform joining method, it has recently evolved into a statistical parameter model method, to the point where it is difficult to distinguish from actual human speech. 【0049】 For example, as shown in Figure 11, the text translation storage unit 250 translates the text information (Text_1) of another ship 1 (YS1) into the native language of the own ship (MS) and interpreted English, and stores it as text translation information (Trans Text_1). Next, the speech synthesis storage unit 260 synthesizes the text translation information (Trans Text_1) into speech translation information (Trans Speech_1) and stores it. Furthermore, this processing is translated and synthesized separately for other ships 2 (YS2), 3 (YS3), 4 (YS4), and 5 (YS5), and stored. 【0050】 As shown in Figure 10, the calling other vessel identification display unit 240 displays the text image of the text translation information (Trans Text_3) stored in the text translation storage unit 250 next to the image of the designated other vessel 3 (YS3) that called the local vessel (MS). At this time, as shown in Figure 12, if the text image of the text translation information (Trans Text_3) is clicked or touched, the speech translation information (Trans Speech_3) stored in the speech synthesis storage unit 260 can be output via the local vessel's (MS) maritime radio 150. 【0051】 Therefore, even when the own vessel (MS) and the other vessel (YS) use different languages, the own vessel (MS) can quickly check the name (Name_3) and call sign (Call Sign_3) of the other vessel 3 (YS3) that called, along with the text translation information (Trans Text_3) in its native language and maritime English that it can understand, and, if necessary, even hear the synthesized speech translation information (Trans Speech_3). This facilitates communication between the two vessels and helps prevent maritime accidents. 【0052】 The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of ​​the present invention. The scope of protection of the present invention is limited only to the matters described in the claims, and a person with ordinary skill in the art of the present invention may modify and improve the technical idea of ​​the present invention in various forms. Accordingly, such modifications and improvements will fall within the scope of protection of the present invention, insofar as they are obvious to a person with ordinary skill. [Explanation of symbols] 【0053】 MS own ship YS, YSn, YS1~YS5 Other ship, Other ship n, Other ship 1~Other ship 5 110 AIS 120 GPS 130 EDICDS 140 RADAR 150 Marine Radio 210 Speech-to-text conversion unit 220 Own ship call plate end 230 Calling Other Vessel Designation Department 240 Calling Other Vessel Identification Unit 250-character translation storage section 260 Speech Synthesis Storage Unit

Claims

[Claim 1] In a ship's safe navigation support system that includes various sensors installed on the ship, EDICS and RADAR which work in conjunction with GPS and AIS to display navigation information on their respective screens, and a maritime radio that transmits and receives voice signals between the ship and other ships, A voice-to-text conversion unit that converts audio information received by the ship's maritime radio from multiple other ships into text information, and stores the audio information and text information together for each other ship, The ship's call board end analyzes each of the character information stored in the voice-to-text conversion unit and determines whether or not there is character information that matches the ship's name or call sign, If there is character information matching the ship's name or call sign via the end of the ship's call plate, the voice-to-character conversion unit designates the other ship that called the ship from the character information of each other ship stored in the voice-to-character conversion unit, A ship safety navigation support system characterized by including a called other ship identification display unit that, when the called other ship designation unit designates the other ship that called the ship, displays the image of the designated other ship on the EDICS or RADAR screen in a way that distinguishes it from the images of multiple other ships. [Claim 2] The aforementioned calling other vessel identification display unit is, The ship safety navigation support system according to claim 1, characterized in that the ship name and call sign of the designated other ship that called the ship is displayed as text images next to the image of the other ship that called the ship. [Claim 3] The aforementioned calling other vessel identification display unit is, The ship safety navigation support system according to claim 1, which displays a speaker-shaped icon on top of the image of the designated other ship that called the ship. [Claim 4] The aforementioned calling other vessel identification display unit is, The ship's safe navigation support system according to claim 3, wherein when the speaker-shaped icon is clicked or touched, the voice information stored in the voice-to-text conversion unit is re-output via the ship's onboard radio. [Claim 5] The ship's safe navigation support system according to claim 1, further comprising a character translation storage unit that, if the character information stored in the voice-to-text conversion unit is not in the ship's native language or maritime English, translates it into the ship's native language and maritime English and stores it as character translation information. [Claim 6] The aforementioned calling other vessel identification display unit is, The ship safety navigation support system according to claim 5, which displays not only the text image of the other ship's name and call sign, but also the text image of the text translation information stored in the text translation storage unit, next to the image of the other ship that called the ship. [Claim 7] The ship safety navigation support system according to claim 6, further comprising a speech synthesis storage unit that synthesizes the text translation information stored in the text translation storage unit into speech translation information and stores it. [Claim 8] The aforementioned calling other vessel identification display unit is, The ship's safe navigation support system according to claim 7, wherein when the text image of the text translation information is clicked or touched, the voice translation information stored in the voice synthesis storage unit is output via the ship's onboard radio.

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