Hippocampus-shaped bulbous bow type bow structure of marine tug

Abstract

The invention relates to a hippocampus-shaped bulbous bow type bow structure of a marine tug. The front part of a bulbous bow of the bow structure is positioned below a bow; the front end in the front of the bulbous bow is positioned at the rear part of the head end of a deck; the bulbous bow is hippocampus-shaped; one or more horizontal thrusters are mounted at the rear part of the bulbous bow of the bow structure; each horizontal thruster transversely penetrates through the rear part of the bulbous bow. The bow structure fully takes multiple factors such as ship resistance, sailing, arrangement, horizontal thruster mounting and using functions into consideration, so that compared with an oblique straight bow, the ship sailing economy is improved; the width of a part where a bow thruster is mounted is increased, so that the mounting of the large-diameter bow thruster can be facilitated, and the bow thruster can be conveniently arranged as far forward as possible to effectively improve applied moment of the horizontal thrusters; compared with the conventional bulbous bow type bow, after being close to an FPSO, a marine platform and other marine structures to perform pushing operation, the bulbous bow is free of collision with a pushed ship or a platform when the ship is in any longitudinal floating state, so that the head structure safety of the ship is ensured.

Description

technical field [0001] The invention relates to a bow structure of a marine tugboat, specifically, a hippocampal bulbous bow structure of a marine tugboat, and belongs to the technical field of bow structures. Background technique [0002] Offshore tugboats are mainly engaged in towing of offshore structures such as ships and offshore platforms, anchoring of offshore platforms, platform supply services, underwater engineering equipment installation support and other engineering operations and services. When the Froude number Fr ≥ 0.28, the offshore tugboat is a medium-high speed vessel. [0003] Offshore tugboat is an important ship type in ocean engineering, which has the functions of towing, supplying, guarding and assisting marine operations. The working environment of marine tugboats is relatively complex, and there are many demands for marine work tasks, especially the pushing operation of marine structures, such as the high requirements for the safety of the bow struc...

AI Technical Summary

Problems solved by technology

[0009] (1) Offshore tugboats have a slanted bow, poor wave-making resistance performance, and high total resistance of the ship, which reduces the navigation economy of the ship; it is prone to bow problems, resulting in increased wave-making resistance and affecting fast performance; thin bow The characteristics are not conducive to the installation of large-diameter bow and side thrusters, which affects and reduces the ability of the ship to maneuver and control the ship

[0010] (2) The conventional bulbous bow of the offshore tugboat is a large bulbous bow. When this bulbous bow is close to the FPSO, offshore platform and other marine structures for pushing operations, the bulbous bow and the thrust will occur. Ships or platforms collide, causing marine safety accidents. Marine tugboats with this conventional bulbous bow cannot be used for pushing operations, which reduces the scope of use of marine tugboats

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