Bow island type semi-submersible ship form

Abstract

The invention provides a bow island type semi-submersible ship form and belongs to the technical field of ship design. The bow island type semi-submersible ship form comprises an inclined side moldedline connected to the hull bottom through an arc bilge; a bow island is arranged at the upper part of a ship bow; the hull bottom comprises a short bulbous bow and a tail rising bottom, wherein the short bulbous bow is arranged on the ship bow and the tail rising bottom is on the stern; a port and a starboard of the short bulbous bow from the ship bow to the stern are in gradually widened smooth curve transition; and the bow island and the ship bow are in linear smooth transition and are gradually amplified to the breadth. According to the bow island type semi-submersible ship form, the favorable interference between the bulbous bow and a main hull is realized, the ship wave-making resistance is reduced, the operation requirement of multiple draft states of a semi-submersible ship is satisfied, the navigation performance of the semi-submersible ship within a larger draft range is also taken into consideration, the seakeeping performance during light draft is improved, the bow island satisfies the stability requirement in the submerging operation process, bow slamming resistance is improved, the cargo carrying area of a rear deck is increased because buoyancy tanks can also be placed, the weight of the structure is reduced, the loading capacity of tail ballast water is reduced, and the building and operation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of ship design, in particular to a bow island type semi-submersible ship type. Background technique [0002] With the development of shipping, various types of ships have been studied. Among them, semi-submersible ships are used as marine engineering ships for transporting large structures at sea, and their structures have become the focus of current research. [0003] For the bow island type semi-submersible ship, its sailing condition is long-distance transportation of large structures, so the requirements for the length and width of the ship itself are relatively high. In the research, in order to reduce the resistance of the hull during navigation, especially in order to reduce the wave-making resistance, higher requirements are placed on the overall ship shape and bulbous bow. And in order to reduce the wind resistance of navigation, the length of the bow island and the wind area should not be too larg...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the current bow island semi-submersible ships have the problem of not being able to balance navigation economy and operational safety

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