ABS to class Compact Semi-SubmersibleVessel & ROV News // June 22, 2010
Classification society ABS says it is to class a new intervention vessel with a Compact Semi-Submersible (CSS) hullform which is on order from Hallin Marine and to be built at Drydocks World in Singapore with delivery expected in 2012.
CSS Derwent has a semi-submersible style hull to provide exceptional seakeeping characteristics while increased deck space provides improved project load carrying capacity.
The CSS concept represents a new subsea operations vessel capable of working in any water depth without the need to jack up or set anchors. The primary focus of the vessel will be light well intervention to provide repair and maintenance services to existing offshore wells and subsea oil production systems support.
The 84m, 8,200dwt CSS Derwent has 'big ship capability' with advanced station-keeping control, Class 3 DP, a 200 tonne multi-purpose tower, a 150 tonne active heave crane, both operational to depths of 3,000m, as well as two deepwater remotely operated vehicles.
CSS Derwent has accommodation for up to 152 people and is classed as a mobile offshore drilling unit (MODU) with the following notations: +A1, Mobile Offshore Drilling Unit, +AMS, (E), DPS-3, UWILD, Helideck.