“JELGAVA” guards Latvia’s Coast-Line

By Peter Pospiech at April 15, 2013 11:16
Filed Under: Company News, drive systems, Shipyards

On April 11th 2013 the third SWATH@A&R Patrol Boat for the Latvian Navy was launched at well-known German Abeking & Rasmussen Shipyard in Lemwerder near Bremen. Mrs. Inta Englande, as representative of the town of Jelgava, Latvia, dropped the bottle of champagne onto the bow and named the Vessel “JELGAVA”.
This ship  is  the  third  of  a  series  of  five  well  proven  25m  SWATH@A&R  design  by Abeking & Rasmussen. In co-operation with Riga-Shipyard, the vessels are being built in Riga and Lemwerder. The new vessels feature is a modular mission bay at the fore ship. By fitting  appropriate  mission  payloads,  such  as  a  diving  module  or  a  MCM  module,  the capabilities of the vessels can be enhanced flexibly to new roles still to come. Cost  effective  patrol  and  surveillance  and  SAR  missions  in  the  territorial  waters  and  the exclusive  economical  zone  as  well  as  participation  in  international  assignments  have  to  be seen as a major benefit of the new patrol boats. 

The decision by the Latvian Navy for the SWATH concept was made due to the extraordinary seaworthiness of these boats. Offering  calm  movements  in  rough sea,  superior  to  3  –  4 times  larger  ships,  “JELGAVA”  is  still  a  compact  vessel  with  small  machinery,  low  fuel consumption and a small crew. This combination offers a high availability at low life-cycle costs. 

Same but not same

In opposition to the German Pilot Tender design, the engines are placed in the lower hulls, leaving more space to accommodate a crew of 8 in the superstructure.  The engine rooms are outfitted with 2 MAN D 2842 engines each rated 809kW at 2100 rpm, driving Servogear CPP through Servogear reduction gearboxes. With this redundant propulsion the speed is around 20 knots.
These worldwide first patrol boats in SWATH-design have been built according to regulations of classification society Germanischer Lloyd. They all received the “stamp” GL+100 A5 HSDE OC3, Patrol Boat, +MC Aut.
The ships feature an overall length of 25,71m, a breadth of 13m and a depth of 2,70m. In opposition to the German Pilot Tender basic design, which feature each a diesel-electric drive, these patrol boats are clear diesel-mechanical drives.

 

images: courtesy of Abeking&Rasmussen, PPM Archiv

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