A semi-submersible workboat that can be lifted and transformed

Abstract

The invention discloses a liftable-transforming semi-submersible work ship which comprises a main hull and a submersible buoyancy tank. The submersible buoyancy tank capable of submerging in water is arranged at the bottom of the main hull and is provided with a plurality of lifting units. The main hull is provided with a plurality of lifting guide holes. The lifting units are respectively inserted in the lifting guide holes correspondingly. Each lifting unit is provided with a lifting lock mechanism. Working capacity of the work ship is improved greatly and adaptability of the work ship to sea conditions is high. The advantage of handiness, as that of a common mono-hull ship, is kept when the work ship stays in the port, the advantages of low resistance and high maneuverability, as those of the common mono-hull ship, are kept when the work ship navigates by water; the work ship can complete essential operation on the sea condition that against operation of the common mono-hull work ship; therefore, the work ship has the advantages of overcoming the poor maneuverability of semi-submersible working platform, keeping small swaying in wind waves, and providing a safer and more comfortable work environment for workers on sea.

Description

technical field [0001] The invention relates to a workboat, in particular to a liftable and transformable semi-submersible workboat. Background technique [0002] Existing workboats generally use ordinary monohulls or catamarans or self-propelled semi-submersible platforms; among them, monohulls are widely used in ports because of their shallow draft, low energy consumption, and low manufacturing costs, but they are widely used in wind and waves The sway, surge, yaw, roll, pitch, and heave are all very large. When the wind and waves are large, it is impossible to carry out work such as transporting personnel and materials close to other ships, and stopping in fixed waters for rescue; Although the yaw angle is not large in waves, the rolling acceleration is large, which causes discomfort to the personnel. And the natural period of the rolling is short, which is often close to the natural period of the pitching, and it is easy to produce harmonic rolling in shorter waves; At ...

AI Technical Summary

Problems solved by technology

[0002] Existing workboats generally use ordinary monohulls or catamarans or self-propelled semi-submersible platforms; among them, monohulls are widely used in ports because of their shallow draft, low energy consumption, and low manufacturing costs, but they are widely used in wind and waves The sway, surge, yaw, roll, pitch, and heave are all very large. When the wind and waves are large, it is impossible to carry out work such as transporting personnel and materials close to other ships, and stopping in fixed waters for rescue; Although the yaw angle is not large in waves, the rolling acceleration is large, which causes discomfort to the personnel. And the natural period of the rolling is short, which is often close to the natural period of the pitching, and it is easy to produce harmonic rolling in shorter waves; At the same time, catamarans occupy a large area of ​​water when docking in the port; although self-propelled semi-submersible platforms are better than monohulls and catamarans in anti-wind and waves, they are generally rarely used due to their deep draft and low speed.

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