Thrust Analysis on Supply Vessel

A platform supply vessel (PSV) is a ship specially designed to supply offshore oil and gas platforms.These ships range from 50 to 100 metres (160 to 330 ft) in length and accomplish a variety of tasks. The primary function for most of these vessels is logistic support and transportation of goods, tools, equipment and personnel to and from offshore oil platforms and other offshore structures. In recent years, a new generation of platform supply vessels entered the market, usually equipped with Class 1 or Class 2 dynamic positioning system. In this project there is a problem that the ship has shifted its position quite far in a certain period of time. Simulations were carried out at several water current speeds. The ship maintains position with 2 bow thrusters and 2 podded propulsion. In the simulation the propulsion function is replaced by a disk actuator with reference to the value of the thrust on each propeller. From the simulation results, it was concluded that the ship experienced a significant change in conditions because the sensors on the ship to detect the ship's position experienced a delay in response or were less sensitive.