Patent ID: 9547308
Date: 2017-01-17
CPC Classifications: B63B,B63H,G05D,G08G

Claim:
1. A method for dynamically maintaining a distance between a floating vessel and a turret moored floating vessel using a computing system, wherein the floating vessel includes a plurality of engines comprising at least one main engine and at least one maneuvering engine, the method comprising: determining a linear distance between the floating vessel and the turret moored floating vessel; controlling output power of the maneuvering engine; and directing the output power of the maneuvering engine to a plurality of marine propellers that are provided in rotatable pods to ensure the determined linear distance matches a first distance, wherein a total output power of the maneuvering engine is set to be between 20% and 35% of total power of the plurality of engines, and wherein the floating vessel is designed to have a total output power of the plurality of engines over displacement of the floating vessel ratio between 0.80 and 1.10, and wherein the total output power of the maneuvering engine for following rotational displacement of the turret moored floating vessel is determined by the below equation: where T denotes a maximum total output power of the maneuvering engines, M denotes a mass of the floating vessel in metric tons, A denotes an added mass of the floating vessel in a surge direction in metric tons, b denotes a displacement of an axis of the turret moored floating vessel, T