Method for Precise Mooring Position Control of Engineering Ships

Abstract

An accurate anchoring position control method for an engineering ship comprises the following steps of (1) determining pre-dropping positions of anchors of the engineering ship and locating the pre-dropping positions; (2) preparing stern temporary anchoring systems of the engineering ship; (3) conducting anchor dropping operation of each stern temporary anchoring system of the engineering ship; (4) enabling the pretension of each pre-dropped stern temporary anchoring system of the engineering ship to reach a designed value; (5) dropping stern anchoring systems of the engineering ship and conducting tensioning by means of the anchoring systems of the engineering ship; (6) connecting all anchoring tackles with anchoring cables; (7) tensioning the anchoring tackles until the engineering shipmove to a preset position; (8) towing ropes of tugboats for anchor dropping and anchor weighing are wound around mooring bollards of the engineering ship; (9) dropping bower anchors at preset positions of the tugboats and tensioning the bower anchors; (10) adjusting the tension of the anchoring systems of the engineering ship and completing the anchoring operation. The accurate anchoring positioncontrol method for the engineering ship enables the position of the engineering ship to be safely and accurately controlled, lowers construction risk and cost and improves the safety and flexibility of anchoring position control of the engineering ship.

Description

technical field [0001] The invention relates to a method for anchoring a ship, in particular to a method for precise anchoring position control of an engineering ship. It belongs to the field of offshore oil engineering. Background technique [0002] Anchoring position control is a way to realize the stability of ship engineering operations. Anchor position control refers to the use of anchors, anchor cables and anchor chains to moor engineering ships in designated sea areas to limit ship drift caused by external forces and keep them at predetermined positions. Anchoring position control is a key link in the safe operation of engineering ships, especially when positioning requirements are high or the positioning water area is very narrow, the requirements for the accuracy and safety of anchoring position control are even higher. [0003] Such as figure 1 As shown, in order to make the anchoring position control safe and accurate, in the prior art, several sets of temporar...

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Problems solved by technology

[0004] The main purpose of the present invention is to overcome the above-mentioned shortcomings existing in the prior art, and to provide a method for precise anchoring position control of engineering ships, which can not only enable engineering ships to safely anchor when the working water environment is complex and the position control accuracy is high. Precise position control solves the problem of precise anchoring position control for engineering ships, greatly shortens the cycle of throwing and anchoring operations, reduces construction risks and costs; moreover, it also improves the safety and flexibility of anchoring position control for engineering ships

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