Dynamic Positioning: Method for Disaster Prevention and Risk Management

The Offshore Oil & Gas industry, shipping and the ocean resource development industries play a vital role in the development of a country. The harsh marine environment and the need to explore for hydrocarbons in deep and ultra-deep waters has put in place technology and specialized marine support vessels to explore and produce hydrocarbons from below the ocean bed. The specialized vessels engaged in such operations have to maintain a fixed position in relation to a fixed point at the ocean bed despite the harsh vessel position deviating forces of sea currents, waves and wind acting on the floating vessel as little change in the position may lead to accident in the sea. So by the method of "Dynamic Positioning" the vessel is kept stationary in the sea and then oil and gas is extracted by using drilling vessels or drill ships. This method also allows other vessels like crane vessels, shuttle tanker, dredging and rock dumping vessels, pipelay, cable lay and cable repair vessels to remain stationary in sea so that extraction process takes place efficiently. (C) 2015 Published by Elsevier B.V.