Westplast chooses NAMJet Propulsion for seismic survey vesselVessel & ROV News // January 7, 2013
Norwegian shipbuilder Westplast has chosen Arkansas-based NAMJet to provide propulsion solutions for its newest seismic survey vessel, the WP950.
The WP950 will be used as a general transport unit and for streamer cable replacement. The boat is powered by twin 295hp Yanmar diesels paired to twin TRAKTOR Jet TJ 381 (15in) waterjets capable of propelling the 31foot, 7,100kg craft to speeds of 28 knots. The vessel’s TRAKTOR Jet propulsion system also provides 2,900kg of bollard pull.
Initial design began in September of 2011, and it was immediately obvious that Westplast’s unique hull design and performance characteristics would require several custom modifications to NAMJet’s TJ 381 propulsion platform.
“The hull design required us to shorten the TJ 381s by six inches,” said NAMJet General Manager Jim Ducker. “We also custom-designed a water pickup system, intake knife system, and shaft tube protection system. Finally, we added a grease-lubricated bearing pack that allows the system to be run even if it’s out of the water.”
The first test vessel was launched in October of 2012. The boat’s initial success spurred an order for three additional boats, the first of which will be delivered in mid-January of 2013, with additional vessels following suit in February and March. Plans are also in the works for another nine vessels to be completed in 2013 and 2014.