Third OPV Delivered to Dutch Navy

By Keith Henderson at April 12, 2012 07:59
Filed Under: Company News, Navy News

This week Damen Schelde Naval Shipbuilding, Netherlands delivered the third Holland Class OPV, the Friesland to the Royal Netherlands Navy. The vessels are designed for operation in Europe as well as overseas with present planned deployment abroad to the Caribbean Sea. The ship class is designed for multi missions including drug smuggling, piracy and blockade duties.

Caption: First of Class Hr MS Holland alongside the quay at Damen Schelde Naval Shipbuilding Vlissingen Yard.
Image credit:     Joost J. Bakker / Wikipaedia

There are four 3,750 t displacement vessels in the class with LOA 354 ft (108 m), beam 52 ft (16 m) and draft 15 ft (4.6 m). The first two of class were built in Damen shipyards in Vlissingen, Netherlands with vessels three and four being built in Galati, Romania.

A feature of the propulsion system for this size of vessel is its CODLOD (Combined Operation Diesel eLectric Or Diesel )configuration.
At the design stage, diesel mechanical and full diesel electric propulsion were considered but were rejected in favor of the CODLOD arrangement due to its favorable low speed efficiency.

The Main engines are two MAN 12V28/33D diesels each of 5,460 kW at 1,000 rpm driving a Renk ASL 85E reduction gearbox with 400W PTI (Power Take-In). There are two shafts with Rolls-Royce 5 blade controllable pitch propellers. Running on electric power only through the PTIs the ship can reach up to about 10 kn, on full power the speed is 21.5 kn. The range is 5,000 nm at a 15 kn cruising speed.

Electrical generation is provided by three Caterpillar 3508B gensets of 968 kW at 1,800 rpm: two are sufficient for electric propulsion. There is a single emergency Caterpillar C9 genset of 255 kW at 1,800 rpm.

Caption: Two MAN 12V 28/33D diesel engines provide the main propulsion for the Holland Class OPV.
Image credit: MAN Diesel & Turbo SE

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