Doosan chosen for SH50

The SH50 is a 48.5ft 15m multi-purpose work boat, designed to be used for many applications including as a fishing boat or general workboat.

The vessel is the first Seahawk Workboats design, created in response to demand for larger multi-purpose vessels. Currently being built at Seahawk’s yard in Plymouth, Devon, SH50 will be used for operations in the South West region.

The vessel will be fitted with a WaterMota supplied Doosan turbocharged and intercooled, 15 litre V8 cylinder, V158TIH, heavy duty, continuously rated marine diesel engine developing 480bhp (353kW) @1800rpm, arranged for keel cooling with sea and fresh water pumps and header tank.

WaterMota has also supplied a D-I reversing gearbox with 4.04:1 RR, D-I hydraulic power take off 1:1 for direct coupling to the forward end of the main engine and JMP 2.5in x 24 volt bilge/deckwash pump and a D-I power single rudder steering system including steering wheel.

“Doosan’s larger engines such as the V158 are very popular with workboat and fishing boat owners,” said WaterMota MD, Mike Beacham. “The engines are very cost-effective and in demand, favoured for their reliability and unsophistication. The engines have good power to weight ratio and are up to 20% lighter than many competitors in commercial heavy duty applications without any sacrifice of reliability.”

The engine (marine rated to ISO 3046) also benefits from direct-injection, mechanical variable speed governor system and water cooled turbo chargers with an inter-cooler.

A WaterMota assembled, Doosan powered marine generating set / power pack is also being supplied which includes an AD136T turbocharged six cylinder 8.1 litre marine diesel engine developing 145bhp / 107kW @ 1500rpm designed for keel cooling, flexibly coupled to a Mecc Alte alternator and a hydraulic pump close coupled to the flywheel end, all mounted on a common bedframe.

SH50 is due to be delivered later this year.

By Katina Read