Bohai bay passenger rolling transport ship form series making method

Abstract

A Bohai bay passenger-rolling transport ship form series formulating method comprises the following steps: (1) determining basic data of port and navigation facilities of each berth according to the current state of port and navigation of Bohai bay passenger-rolling transport; (2) according to the basic data of port and navigation facilities, ship type scale parameters of each Bohai bay passenger rolling transport ship are determined; (3) determining tonnage of each Bohai bay passenger rolling transport ship according to the basic data of port and navigation facilities; (4) matching adjustment is carried out on the ton level according to the determined ship type scale parameters of the Bohai bay passenger-rolling transport ship; and (5) summarizing ship type scale parameters and tonnage levels of the Bohai bay passenger-rolling transport ships at all berths, and determining a ship type series of the Bohai bay passenger-rolling transport ships. By the adoption of the method, on the premise that the existing bohai bay passenger-rolling transport port and navigation facility conditions are met, the bohai bay passenger-rolling transport ship type series is determined, and the conditions of super-capacity berthing and sailing do not occur. According to the actual situation, one ship type in a ship type series of passenger rolling transport ships in the Bohai bay is selected as the maximum berthing ship type for each berth.

Description

Technical Field

[0001] The invention relates to the fields of ship transportation technology, port and shipping management, and ship design technology, and in particular to a method for formulating a series of passenger and vehicle transport ships in the Bohai Bay. Background Art

[0002] Ro-ro passenger ships carry passengers, vehicles and goods. Ro-ro passenger ships in Bohai Bay serve the economic and social needs of Liaoning, Shandong and the hinterland city clusters, and conduct maritime transport, which reduces the distance by about 1,800 kilometers compared with the detour by road.

[0003] Ro-ro passenger ships in Bohai Bay have access to 7 ports, each with 2 to 16 berths, totaling nearly 30. Ro-ro passenger ships in Bohai Bay choose appropriate berths for berthing according to the ship type and transportation needs.

[0004] The existing design of passenger and vehicle transport ships in Bohai Bay mainly adopts the method of "experience + demand", which is based on the existing ship types and designs the ship size and tonnage according to transportation needs. The requirements for matching the ship type with port and navigation facilities are not fully considered, or there are situations where the ship exceeds the limit requirements and berths beyond the capacity, which affects the navigation safety of ships.

[0005] At present, there is still a lack of a scientific method for formulating the ship type series of passenger and vehicle transport ships in the Bohai Bay. At the same time, it cannot be guaranteed that the designed ships fully meet the requirements of port and navigation facilities. The above defects are what those skilled in the art hope to overcome. Summary of the invention

[0006] In order to solve the problem that the existing technology does not give sufficient consideration to the requirements for matching ship types with port and navigation facilities, or that exceeding the restriction requirements and berthing beyond capacity occur, thus affecting the navigation safety of ships, the present invention provides a method for formulating a series of passenger and vehicle ferry types in the Bohai Bay, which can provide a scientific, reasonable and efficient technical solution for formulating a series of passenger and vehicle ferry types in the Bohai Bay.

[0007] To achieve the above object, the technical solution adopted by the present invention is: a method for formulating a series of passenger and vehicle transport ships in Bohai Bay, comprising the following steps:

[0008] (1) According to the current status of passenger and vehicle transport ports and shipping in Bohai Bay, determine the basic data of port and shipping facilities at each berth

[0009] Port and shipping facilities include berths, port waters, gates, channels, and anchorages. Berths are facilities for berthing of ro-ro passenger transport ships. The maximum ship size and tonnage that can be berthed at different berths are different. The calculation formula for the basic data of port and shipping facilities at each berth is:

[0010]

[0011] Among them, b i is the basic data of berth and navigation facilities; i is different berths; Wj is the basic data of berth; S j is the basic data of the harbor waters; K j is the basic data of the port; j is the basic data of the waterway; M j is the anchorage basic data; j is the relevant infrastructure data; Solver is the operator for solving the most relevant parameters, specifically, L b is the berth length, d is the surplus length, b k is the width of the door, D H is the turning circle diameter, D1 is the designed water depth at the front of the wharf, D2 is the designed water depth of the channel, W is the navigation width of the channel, c is the surplus width between the ship and the bottom line of the channel, n is the ship drift multiple, γ is the wind and flow pressure deflection angle, R is the mooring radius of the single anchoring water area, and h is the water depth of the anchorage;

[0012] (2) Determine the ship type and scale parameters of the passenger and vehicle transport ships at each berth in Bohai Bay based on the basic data of port and navigation facilities

[0013] The ship scale parameters of the Bohai Bay Ro-Ro passenger transport ship include the overall length, the molded width, and the full-load draft. These three parameters define the ship's external dimensions. The most relevant parameters of the overall length, the molded width, and the full-load draft are calculated and solved, and together they constitute the calculation formula for the ship scale parameters of the Bohai Bay Ro-Ro passenger transport ship at each berth, as follows:

[0014]

[0015] Among them, c i is the ship scale parameter of the passenger and vehicle transport ship in Bohai Bay; i is different berths; L is the total length; B is the width; T is the full load draft; Solver is the operator for solving the most relevant parameters; L b is the berth length; d is the surplus length; b k is the width of the door; D H is the turning circle diameter; D1 is the designed water depth at the front of the wharf; D2 is the designed water depth of the channel; W is the navigation width of the channel; c is the surplus width between the ship and the bottom line of the channel; n is the ship drift multiple; γ is the wind and flow pressure deflection angle; R is the mooring radius of the single anchoring water area; h is the water depth of the anchorage; Z0 is the hull sinking amount when the ship is sailing; Z1 is the minimum surplus depth under the keel; Z2 is the wave surplus depth; Z3 is the ship loading and trim surplus depth; Z4 is the siltation depth;

[0016] (3) Determine the tonnage of passenger and vehicle transport vessels at each berth in Bohai Bay based on the basic data of port and navigation facilities

[0017] The tonnage of passenger and vehicle transport ships in Bohai Bay determines the carrying capacity of the ship, which in turn affects the number of passengers and vehicles. The tonnage is related to the berthing capacity of the berth, the wave height of the terminal, and the size of the ship. The tonnage of large ships is larger. The calculation formula for the tonnage of passenger and vehicle transport ships at each berth in Bohai Bay is:

[0018] GT=Solver{H 4％}

[0019] Among them, GT is the tonnage of the ship; H 4％ is the wave height with a cumulative frequency of 4% of the wave train; Solver is the operator for solving the most relevant parameters;

[0020] (4) Adjust the ship type and tonnage of each berth in Bohai Bay to match the determined ro-ro passenger transport ship

[0021] Matching adjustment involves two aspects: the adjustment between the scale parameters of each ship type and the adjustment between the ship type parameters and the tonnage. The former is mainly based on the matching adjustment of the overall length and width, which is reduced on the basis of the calculated value to avoid the unreasonable over-long and over-wide ships. The latter is mainly based on the range adjustment, which defines the tonnage range based on the determination of the ship type scale parameters.

[0022] (5) Summarize the ship type parameters and tonnage of each berth in the Bohai Bay Ro-Ro passenger transport ship, and determine the ship type series of the Bohai Bay Ro-Ro passenger transport ship

[0023] There are many berths for passenger and vehicle transport ships in Bohai Bay. The ship scale parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated for each berth are summarized. When the values ​​are close, the smaller one is taken. The ship can meet the berthing capacity requirements, and then the Bohai Bay passenger and vehicle transport ship type series including various ship types is summarized. The calculation formula for the Bohai Bay passenger and vehicle transport ship type series is:

[0024]

[0025] Among them, BH is the type series of passenger and vehicle transport ships in Bohai Bay; m is the number of berths for passenger and vehicle transport ships in Bohai Bay; i is the ship size parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated at the i-th berth; j is the ship size parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated at the j-th berth; KG1 is the first type of passenger and vehicle transport ship in Bohai Bay; KG2 is the second type of passenger and vehicle transport ship in Bohai Bay; KG i The i-th type of Bohai Bay passenger and vehicle transport ship, i value is less than 8;

[0026] The Ro-Ro passenger transport ships in the Bohai Bay are available to Dalian and Lushun Ports in Liaoning, and Longkou, Penglai, Yantai and Weihai Ports in Shandong. Ro-Ro passenger transport ships in the Bohai Bay can only berth at Ro-Ro passenger berths to allow passengers and vehicles to embark and disembark. The number and specifications of Ro-Ro passenger berths in different ports are different, and the capacity and parameters of port and shipping facilities are different. Step (1) is to calculate and solve the most relevant parameters for each berth and port and shipping facility. The port and shipping facilities in step (1) refer to facilities closely related to the Ro-Ro passenger transport ship type series in the Bohai Bay, including berths, port waters, gates, waterways, and anchorages. Other facilities such as shore-based rear terminals and waiting halls are not included.

[0027] In step (2), the most relevant parameters of the total length L are calculated and solved. The total length L meets the restriction requirements of various port and navigation facilities to avoid the situation where the ship is too long and the navigation safety is reduced. Because the passenger and vehicle transport ships in the Bohai Bay adopt the berthing method, the berth length and surplus width directly affect the value of the total length L. In step (2), the most relevant parameters of the type width B are calculated and solved, considering the navigation width W of the channel, the surplus width c between the ship and the bottom line of the channel, the ship drift multiple n, the total length L of the ship, and the wind and flow pressure deflection angle γ. According to the measured data of the three waterway observation points of Dasanshan, Laotieshan and Chengshanjiao in the Bohai Bay area announced by the National Marine Information Center in 2022, the average value of the cross current in the Bohai Bay is 0.61m / s. Combined with the relationship between ship drift and cross current, it is recommended that n be 1.5. According to the corresponding relationship between wind, flow pressure deflection angle and cross current, it is recommended that γ be 10; considering that the speed of passenger and vehicle transport ships in the Bohai Bay is greater than 6 knots, it is recommended that c be 0.75 times the type width of the ship. In step (2), the most relevant parameter calculation and solution of the full load draft T are performed. In the process of solving the full load draft T, according to the port regulations and the wind, wave, current and soil characteristics of the Bohai Bay, the appropriate value of Z0 is 1.01, the appropriate value of Z1 is 0.3, the appropriate value of Z2 is 0, the appropriate value of Z3 is 0.1, and the appropriate value of Z4 is 0.1.

[0028] The wave train cumulative frequency of step (3) is 4% of the wave height H 4％ It is related to the ship's tonnage, following waves and beam waves.

[0029] The unreasonable ship types of "extra-long" and "extra-wide" mentioned in step (4) refer to unreasonable ship types that are obviously out of touch with reality. Both cannot guarantee basic navigation safety. Although the method of calculating and solving the most relevant parameters and taking the minimum value is adopted in the process of determining the ship type scale parameters in step (2), the values ​​of the total length L, the width B, and the full load draft T cannot have no lower limit, and the values ​​that are obviously deviated from the actual value must be eliminated.

[0030] In step (5), the minimum value of the ship size parameters and tonnage of the Bohai Bay passenger and vehicle transport ship type with similar values ​​obtained based on the berth calculation is taken as a type of Bohai Bay passenger and vehicle transport ship type, and then the various types of Bohai Bay passenger and vehicle transport ship types are summarized to determine the Bohai Bay passenger and vehicle transport ship type series that includes various ship types to ensure that the restrictions on various port and shipping facilities are met.

[0031] The beneficial effects of the present invention are:

[0032] 1. Able to formulate the passenger and vehicle ferry series in Bohai Bay in a scientific, reasonable and efficient manner.

[0033] 2. This method uses the analytical calculation method of "most relevant parameter calculation solution + matching adjustment and screening + reasonable merging" to calculate and match the ship scale parameters of each Bohai Bay Ro-Ro passenger transport ship type and the tonnage of each Bohai Bay Ro-Ro passenger transport ship berth. Then the calculation results are rationally merged to determine the Bohai Bay Ro-Ro passenger transport ship type series. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The present invention is a flow chart of the method for formulating the Bohai Bay Ro-Ro passenger transport ship type series.

[0035] Figure 2 This is a schematic diagram of a navigable port for passenger and vehicle transport ships in Bohai Bay, showing an embodiment of the present invention.

[0036] Figure 3 It is a schematic diagram showing the calculation of the total length based on berths according to another embodiment of the present invention.

[0037] Figure 4 It is a schematic diagram showing a wave height of 4% when the cumulative frequency of a wave train is calculated according to the tonnage of a ship in another embodiment of the present invention.

[0038] Figure 5 It is a schematic diagram showing the matching adjustment of ship scale parameters of Bohai Bay passenger and vehicle transport ships according to another embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present invention, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] Example 1

[0041] like Figure 1 As shown, an example of the method for formulating a series of passenger and vehicle transport ships in the Bohai Bay according to the present invention comprises the following steps:

[0042] In step S110, the basic data of each berth and navigation facility is determined according to the current status of passenger and vehicle transport ports and navigation in Bohai Bay.

[0043] In step S120, the ship type and scale parameters of the passenger and vehicle transport ships at each berth in the Bohai Bay are determined according to the basic data of the port and navigation facilities.

[0044] In step S130, the tonnage of ro-ro passenger transport ships at each berth in Bohai Bay is determined according to the basic data of port and shipping facilities.

[0045] In step S140, the ship type scale parameters and tonnage of the determined passenger and vehicle transport ships at each berth in the Bohai Bay are adjusted for matching.

[0046] In step S150, the ship type parameters and tonnage of the passenger and vehicle transport ships at each berth in the Bohai Bay are summarized to determine the ship type series of the passenger and vehicle transport ships in the Bohai Bay.

[0047] In step S110, the port facilities include berths, port waters, gates, channels, anchorages, etc. Berths are facilities for berthing of ro-ro passenger transport ships, and different berths have different maximum ship sizes and tonnages.

[0048] In this embodiment, port and shipping facilities refer to facilities closely related to the passenger and vehicle transport ship series in Bohai Bay, including berths, port waters, gates, channels, and anchorages. Other facilities such as shore-based rear terminals and waiting halls are not included. Passenger and vehicle transport ships in Bohai Bay sail to Dalian and Lushun Ports in Liaoning, and Longkou, Penglai, Yantai, and Weihai Ports in Shandong. Passenger and vehicle transport ships in Bohai Bay can only berth at passenger and vehicle berths for passengers and vehicles to board and disembark. The number and specifications of passenger and vehicle berths in different ports are different, and the capacity and parameters of port and shipping facilities are different. Figure 2 This is a schematic diagram of the navigable port for passenger and vehicle transport ships in Bohai Bay in this embodiment.

[0049] In this embodiment, the calculation formula for the basic data of each berth and navigation facility is:

[0050]

[0051] Among them, b i is the basic data of berth and navigation facilities; i is different berths; W j is the basic data of berth; S j is the basic data of the harbor waters; K j is the basic data of the port; j is the basic data of the waterway; M j is the anchorage basic data; j is the relevant infrastructure data; Solver is the operator for solving the most relevant parameters. b is the berth length, d is the surplus length, b k is the width of the door, D His the turning circle diameter, D1 is the designed water depth at the front of the wharf, D2 is the designed water depth of the channel, W is the navigation width of the channel, c is the surplus width between the ship and the bottom line of the channel, n is the ship drift multiple, γ is the wind and flow pressure deflection angle, R is the mooring radius of the single anchoring water area, and h is the water depth of the anchorage.

[0052] In step S120, the most relevant parameter calculation is performed on the total length L to obtain the minimum value. The total length L meets the restriction requirements of various port and navigation facilities to avoid the situation where the ship is too long and the navigation safety is reduced. The width B is solved, considering the navigation width W of the channel, the surplus width c between the ship and the bottom line of the channel, the ship drift multiple n, the total length of the ship L, and the wind and flow pressure deflection angle γ. According to the measured data of the three waterway observation points of Dasanshan, Laotieshan and Chengshanjiao in the Bohai Bay area published by the National Marine Information Center in 2022, the average value of the cross current in the Bohai Bay is 0.61m / s. Combined with the relationship between ship drift and cross current, it is recommended that n be 1.5. According to the corresponding relationship between wind, flow pressure deflection angle and cross current, it is recommended that γ be 10; considering that the speed of passenger and vehicle transport ships in the Bohai Bay is greater than 6 knots, it is recommended that c be 0.75 times the ship's width. The most relevant parameter calculation is performed on the full load draft T to obtain the minimum value. In the process of solving the full load draft T, according to the port regulations and combined with the wind, wave, current and soil characteristics of the Bohai Bay, the appropriate value of Z0 is 1.01, the appropriate value of Z1 is 0.3, the appropriate value of Z2 is 0, the appropriate value of Z3 is 0.1, and the appropriate value of Z4 is 0.1.

[0053] Example 2

[0054] This embodiment is another example of the method for formulating the type series of Bohai Bay passenger and vehicle transport ships of the present invention, which is to calculate the type scale parameters of the Bohai Bay passenger and vehicle transport ships at each berth and define the external dimensions of the ship, including the following steps:

[0055] In this embodiment, since the ro-ro passenger transport ship in Bohai Bay adopts the berthing method, the berth length and surplus width directly affect the value of the total length L. Figure 3 This is a schematic diagram for calculating the total length based on berths.

[0056] In this embodiment, the ship type dimensions of the Bohai Bay Ro-Ro passenger transport ship mainly include the overall length, the molded width, and the full-load draft. The three define the external dimensions of the ship, and the overall length, the molded width, and the full-load draft are respectively calculated and solved for the most relevant parameters, which together constitute the calculation formula for the ship type dimension parameters of the Bohai Bay Ro-Ro passenger transport ship at each berth, as follows:

[0057]

[0058] Among them, c i is the ship scale parameter of the passenger and vehicle transport ship in Bohai Bay; i is different berths; L is the total length; B is the width; T is the full load draft; Solver is the operator for solving the most relevant parameters; L bis the berth length; d is the surplus length; b k is the width of the door; D H is the turning circle diameter; D1 is the designed water depth at the front of the wharf; D2 is the designed water depth of the channel; W is the navigation width of the channel; c is the surplus width between the ship and the bottom line of the channel; n is the ship drift multiple; γ is the wind and flow pressure deflection angle; R is the mooring radius of the single anchoring water area; h is the water depth of the anchorage; Z0 is the sinking amount of the hull when the ship is sailing; Z1 is the minimum surplus depth under the keel; Z2 is the wave surplus depth; Z3 is the ship loading longitudinal surplus depth; Z4 is the siltation depth.

[0059] In step S130, the tonnage of the passenger and vehicle transport ship in Bohai Bay determines the carrying capacity of the ship, which in turn affects the number of passengers and vehicles. The tonnage is related to the berthing capacity of the berth, the wave height of the wharf, etc., and is also related to the size of the ship. Large ships have larger tonnage.

[0060] Example 3

[0061] This embodiment is another example of the method for formulating the Bohai Bay Ro-Ro passenger transport ship type series according to the present invention, which is to define the tonnage range based on the determination of the ship type scale parameters, and includes the following steps:

[0062] In this embodiment, the wave train cumulative frequency is 4% of the wave height H 4％ It is related to the ship's tonnage, following waves and beam waves. Figure 4 Schematic diagram of wave height calculated for a cumulative frequency of 4% based on the ship tonnage.

[0063] In this embodiment, the calculation formula for the tonnage of ro-ro passenger transport ships at each berth in Bohai Bay is:

[0064] GT=Solver{H 4％}

[0065] Among them, GT is the tonnage of the ship; H 4％ is the wave height with a cumulative frequency of 4% of the wave train; Solver is the operator for solving the most relevant parameters.

[0066] In step S140, the matching adjustment involves two aspects: the adjustment between the scale parameters of each ship type and the adjustment between the ship type parameters and the tonnage. The former is mainly based on the matching adjustment of the total length and the width of the model, and the calculation value is reduced to avoid the unreasonable ship types of "super long" and "super wide". The latter is mainly based on the range adjustment, and the tonnage range is framed on the basis of the determination of the ship type scale parameters.

[0067] In one embodiment of the present invention, the unreasonable ship types of "super-long" and "super-wide" refer to unreasonable ship types that are obviously out of touch with reality. Figure 5 This is a schematic diagram of the matching adjustment of the ship scale parameters of the passenger and vehicle transport ships in the Bohai Bay.

[0068] In this embodiment, unreasonable ship types such as "super-long" and "super-wide" cannot guarantee basic navigation safety. Although the most relevant parameter calculation method is used to determine the ship size parameters, the values ​​of the total length L, the width B, and the full load draft T cannot be without a lower limit, and the values ​​that deviate from the actual value are eliminated.

[0069] In step S150, there are many berths for passenger and vehicle transport in Bohai Bay, and the ship type scale parameters and tonnage of passenger and vehicle transport in Bohai Bay calculated for each berth are summarized. When the values ​​are close, the smaller one is taken, and the ship meets the berthing capacity requirements. Then, a series of passenger and vehicle transport in Bohai Bay including various ship types is summarized.

[0070] Example 4

[0071] This embodiment is another example of the method for formulating the Bohai Bay Ro-Ro passenger transport ship type series of the present invention, which summarizes various types of Bohai Bay Ro-Ro passenger transport ship types to obtain the Bohai Bay Ro-Ro passenger transport ship type series containing various types of ships, including the following steps:

[0072] In this embodiment, the minimum value of the Bohai Bay Ro-Ro Passenger Ship type scale parameters and tonnage with similar values ​​obtained based on berth calculation is taken as a type of Bohai Bay Ro-Ro Passenger Ship type, and then various types of Bohai Bay Ro-Ro Passenger Ship types are summarized to determine the Bohai Bay Ro-Ro Passenger Ship type series that includes various types of ships.

[0073] In this embodiment, the calculation formula for the passenger and vehicle transport ship type series in Bohai Bay is:

[0074]

[0075] Among them, BH is the type series of passenger and vehicle transport ships in Bohai Bay; m is the number of berths for passenger and vehicle transport ships in Bohai Bay; i is the ship size parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated at the i-th berth; j is the ship size parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated at the j-th berth; KG1 is the first type of passenger and vehicle transport ship in Bohai Bay; KG2 is the second type of passenger and vehicle transport ship in Bohai Bay; KG i is the i-th type of passenger and vehicle transport ship in Bohai Bay, and the value of i is less than 8.

[0076] It can be seen from the above embodiments that the Bohai Bay Ro-Ro passenger transport ship type series formulation method provided by the present invention can formulate a Bohai Bay Ro-Ro passenger transport ship type series. The series includes multiple Bohai Bay Ro-Ro passenger transport ship types, each type of ship includes three ship type dimensions of total length, molded width, full load draft, and tonnage. The present invention provides a scientific, reasonable and efficient method for formulating the Bohai Bay Ro-Ro passenger transport ship type series.

Claims

1. A method for formulating a series of passenger and vehicle transport ships in Bohai Bay, characterized in that: The steps include: (1) According to the current status of passenger and vehicle transport ports and shipping in Bohai Bay, determine the basic data of port and shipping facilities at each berth Port and shipping facilities include berths, port waters, gates, channels, and anchorages. Berths are facilities for berthing of ro-ro passenger transport ships. The maximum ship size and tonnage that can be berthed at different berths are different. The calculation formula for the basic data of port and shipping facilities at each berth is: Among them, b i is the basic data of berth and navigation facilities; i is different berths; W j is the basic data of berth; S j is the basic data of the harbor waters; K j is the basic data of the port; j is the basic data of the waterway; M j is the anchorage basic data; j is the relevant infrastructure data; Solver is the operator for solving the most relevant parameters, specifically, L b is the berth length, d is the surplus length, b k is the width of the door, D H is the turning circle diameter, D1 is the designed water depth at the front of the wharf, D2 is the designed water depth of the channel, W is the navigation width of the channel, c is the surplus width between the ship and the bottom line of the channel, n is the ship drift multiple, γ is the wind and flow pressure deflection angle, R is the mooring radius of the single anchoring water area, and h is the water depth of the anchorage; (2) Determine the ship type and scale parameters of the passenger and vehicle transport ships at each berth in Bohai Bay based on the basic data of port and navigation facilities The ship scale parameters of the Bohai Bay Ro-Ro passenger transport ship include the overall length, the molded width, and the full-load draft. These three parameters define the ship's external dimensions. The most relevant parameters of the overall length, the molded width, and the full-load draft are calculated and solved, and together they constitute the calculation formula for the ship scale parameters of the Bohai Bay Ro-Ro passenger transport ship at each berth, as follows: Among them, c i is the ship scale parameter of the passenger and vehicle transport ship in Bohai Bay; i is different berths; L is the total length; B is the width; T is the full load draft; Solver is the operator for solving the most relevant parameters; L b is the berth length; d is the surplus length; b k is the width of the door; D H is the turning circle diameter; D1 is the designed water depth at the front of the wharf; D2 is the designed water depth of the channel; W is the navigation width of the channel; c is the surplus width between the ship and the bottom line of the channel; n is the ship drift multiple; γ is the wind and flow pressure deflection angle; R is the mooring radius of the single anchoring water area; h is the water depth of the anchorage; Z0 is the hull sinking amount when the ship is sailing; Z1 is the minimum surplus depth under the keel; Z2 is the wave surplus depth; Z3 is the ship loading and trim surplus depth; Z4 is the siltation depth; (3) Determine the tonnage of passenger and vehicle transport vessels at each berth in Bohai Bay based on the basic data of port and navigation facilities The tonnage of passenger and vehicle transport ships in Bohai Bay determines the carrying capacity of the ship, which in turn affects the number of passengers and vehicles. The tonnage is related to the berthing capacity of the berth, the wave height of the terminal, and the size of the ship. The tonnage of large ships is larger. The calculation formula for the tonnage of passenger and vehicle transport ships at each berth in Bohai Bay is: GT=Solver{H 4％ } Among them, GT is the tonnage of the ship; H 4％ is the wave height with a cumulative frequency of 4% of the wave train; Solver is the operator for solving the most relevant parameters; (4) Adjust the ship type and tonnage of each berth in Bohai Bay to match the determined ro-ro passenger transport ship Matching adjustment involves two aspects: the adjustment between the scale parameters of each ship type and the adjustment between the ship type parameters and the tonnage. The former is mainly based on the matching adjustment of the overall length and width, which is reduced on the basis of the calculated value to avoid the unreasonable over-long and over-wide ships. The latter is mainly based on the range adjustment, which defines the tonnage range based on the determination of the ship type scale parameters. (5) Summarize the ship type parameters and tonnage of each berth in the Bohai Bay Ro-Ro passenger transport ship, and determine the ship type series of the Bohai Bay Ro-Ro passenger transport ship There are many berths for passenger and vehicle transport ships in Bohai Bay. The ship scale parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated for each berth are summarized. When the values ​​are close, the smaller one is taken. The ship can meet the berthing capacity requirements, and then the Bohai Bay passenger and vehicle transport ship type series including various ship types is summarized. The calculation formula for the Bohai Bay passenger and vehicle transport ship type series is: Among them, BH is the type series of passenger and vehicle transport ships in Bohai Bay; m is the number of berths for passenger and vehicle transport ships in Bohai Bay; i is the ship size parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated at the i-th berth; j is the ship size parameters and tonnage of passenger and vehicle transport ships in Bohai Bay calculated at the j-th berth; KG1 is the first type of passenger and vehicle transport ship in Bohai Bay; KG2 is the second type of passenger and vehicle transport ship in Bohai Bay; KG i It is the i-th type of passenger and vehicle transport ship in Bohai Bay, and the i value is less than 8.

2. The method for formulating a series of passenger and vehicle transport ships in Bohai Bay as claimed in claim 1, characterized in that: The passenger and vehicle ferry in the Bohai Bay described in step (1) is accessible to Dalian and Lushun ports in Liaoning, and Longkou, Penglai, Yantai and Weihai ports in Shandong. The passenger and vehicle ferry in the Bohai Bay can only berth at the passenger and vehicle berths for passengers and vehicles to embark and disembark. The number and specifications of passenger and vehicle berths at different ports are different, and the capacity and parameters of port and navigation facilities are different. Step (1) is to calculate and solve the most relevant parameters for each berth and port and navigation facility.

3. The method for formulating a series of passenger and vehicle transport ships in Bohai Bay as claimed in claim 1, characterized in that: In step (2), the most relevant parameters of the total length L are calculated and solved. The total length L meets the restriction requirements of various port and navigation facilities to avoid the situation where the ship is too long and the navigation safety is reduced. Because the passenger and vehicle transport ships in the Bohai Bay adopt the berthing method, the berth length and surplus width directly affect the value of the total length L. In step (2), the most relevant parameters of the mold width B are calculated and solved, considering the navigation width W of the channel, the surplus width c between the ship and the bottom line of the channel, the ship drift multiple n, the total length L of the ship, the wind and flow pressure deflection angle γ, and the actual data of the three waterway observation points of Dasanshan, Laotieshan and Chengshanjiao in the Bohai Bay area announced by the National Marine Information Center in 2022. Based on the measured data, the average cross current value in Bohai Bay is 0.61 m / s. Considering the relationship between ship drift and cross current, it is recommended that n be 1.

5. Based on the corresponding relationship between wind, flow pressure deflection angle and cross current, it is recommended that γ be 10. Considering that the speed of passenger and vehicle transport ships in Bohai Bay is greater than 6 knots, it is recommended that c be 0.75 times the ship's width. In step (2), the most relevant parameter calculation is performed on the full load draft T. In the process of solving the full load draft T, according to the port regulations and the wind, wave, current and soil characteristics of Bohai Bay, the appropriate value of Z0 is 1.01, the appropriate value of Z1 is 0.3, the appropriate value of Z2 is 0, the appropriate value of Z3 is 0.1, and the appropriate value of Z4 is 0.

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4. The method for formulating a series of passenger and vehicle transport ships in Bohai Bay as claimed in claim 1, characterized in that: The wave train cumulative frequency of step (3) is 4% of the wave height H 4％ It is related to the ship's tonnage, following waves and beam waves.

5. The method for formulating a series of passenger and vehicle transport ships in Bohai Bay as claimed in claim 1, characterized in that: In the process of determining the ship scale parameters in step (2), the method of calculating and solving the most relevant parameters is adopted, but the values ​​of the overall length L, the breadth B, and the full load draft T cannot have no lower limit, and the values ​​that deviate from the actual value are eliminated.

6. The method for formulating a series of passenger and vehicle transport ships in Bohai Bay as claimed in claim 1, characterized in that: In step (5), the minimum value of the ship size parameters and tonnage of the Bohai Bay passenger and vehicle transport ship type with similar values ​​obtained based on the berth calculation is taken as a type of Bohai Bay passenger and vehicle transport ship type, and then the various types of Bohai Bay passenger and vehicle transport ship types are summarized to determine the Bohai Bay passenger and vehicle transport ship type series that includes each type of ship.

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