DP3 is a new offshore vessel positioning technology standard set by IMO that will enable a couple of new Farstad offshore vessels on the stocks in Norway to work safely in the most demanding and potentially dangerous situations using systems equipment provided by Rolls Royce.Basically, to maintain an accurate position determined mainly by satellite navigation system (anchoring is not in itself precise enough) an offshore vessel needs to be equipped with propulsors and thrusters controlled automatically by a dynamic positioning (DP) system in such a way as to oppose the resultant force of wind, waves, tides and currents.
Dynamic positioning, propulsion & thruster schematic: Courtesy of Rolls-Royce
Deep-water drilling for oil or gas (common now as shallower resources deplete) is an operation that often carries with it the need for jack-ups, construction and support vessels to operate in extremely demanding situations where any loss of position might result in fatal accidents, severe ... [More]
Offshore vessels, tugboats and ferries all have a common need – to turn in their own length, even move sideways at times – and German propulsion specialist propulsion manufacturer, Schottel, specialises in meeting that need.
'ESVAGT Aurora' (2x SRP 3030 CP): Photo courtesy of Schottel
A company whose corporate roots go way back to 1921 continues to lead through its ongoing investment in R&D, now unveiling a new generation of their larger thruster units with their housings hydro-dynamically optimised using CFD techniques. These new thrusters well-known as SRP (Schottel Rudder Propellers) and STP (Schottel Twin Propellers) are available with a variety of reduction ratios to suit all common input speeds whether diesel engine or electric motor driven, and Schottel add that they are more compact in size than existing thrusters in the range.
Hydraulic clutch drives thruster hydraulic units The new thrusters come with an independent, hydraulically operated m... [More]