Feature 2 | Coast Guard Vessels
Hybrid coast guard vessel can also burn
LNG
The first of a class of three coast guard vessels is now entering service with
the Norwegian Coast Guard (Kystvakt). KV Barentshav will cover the
northern region with a wide range of responsibilities.
KV Barentshav will have diverse roles including EEZ protection, fisheries control, emergency towing, SAR, pollution prevention and
submarine rescue.
T
he vessel’s responsibilities will Norwegian coast guard vessels have be powered either direct mechanically by
include exclusive economic zone a varied operational profile, so they are a Rolls-Royce 32:40L8P medium-speed
(EEZ) protection, fisheries control, good candidates for hybrid propulsion diesel engine or by a 2500kW electric
emergency towing, search and rescue systems to ensure that no more power motor with PTI to the main gearbox, fed
(SAR) and pollution prevention. Submarine than is necessary is used in a particular by a selection of the gensets in a separate
rescue is also on the agenda, and the ship is mode, allowing the power plant to work compartment powered by gas-fuelled
prepared for taking on board the unitised at its best efficiency, and reducing exhaust high-speed Mitsubishi engines.
NATO rescue system or NATO Submarine emissions to a minimum. The 4000kW diesel engine can also
Rescue System (NSRS). KV Barentshav has an unusual hybrid generate electric power by means of a
Most interestingly of all, however, the propulsion arrangement of a type shaft generator which, together with the
design breaks new ground in having a increasingly found in offshore service firefighting pump, is driven through a
hybrid propulsion system that can run vessels, having LNG and diesel (MDO) gearbox from the front end of the engine.
in various modes on liquefied natural gas as alternative fuels, and both mechanical Diesel and gas systems can be used
(LNG), diesel fuel, or both, to minimise and electrical transmission. A single main separarately or together. A single 234m
3
emissions. CP propeller 4m diameter in a nozzle can LNG flask is located ahead of the engine
18 Warship Technology October 2009
p18-21_WT Coast Guard
OCT09.indd 18 17/09/2009 16:46:21
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