First Steel Cutting of German Navy F125 Class Frigate

More than 200 guests and representatives from politics, defense and industry gathered at the historic Blohm + Voss shipyard in Hamburg, Germany for the steel cutting ceremony marking the commencement of production of the new F125 Baden Württemberg Class Frigate for the German Navy. Keel-laying will take place in November 2011 and delivery of the first vessel is planned for 2016.


Artist impression of the new German F125 Baden Württemberg Class frigate
Image credit: 2011 Bundeswehr / ThyssenKrupp Marine Systems AG

The order for four vessels was placed in 2007 by the Federal (German) Office of Defence Technology and Procurement (BWB), with ARGE 125, an industrial consortium formed by Blohm and Voss Nordseewerke (BVN) and Friedrich Lürssen Werft GmbH & Co.

The F125 marks a major change in the Germany Navy’s traditional ship specification of vessels designed for operations from a home base in Germany for relatively short durations. The requirements profile of the F125 ranges from national and allied defense, peace-keeping initiatives and humanitarian missions to combating terrorism and the repulsion of asymmetric threats. To achieve this, the F125 is the first vessel in the German Navy to introduce the two ship’s complement concept, to permit tours of duty of up to 24 months.

The propulsion system provides for the combination of a GE LM2500 gas turbine of 20,000 kW, with two 4,500 kW electric motors in a CODELAG (combined diesel-electric and gas turbine) configuration using a Renk main gear unit on the port side and starboard side, both interconnected by a cross-connect gear. Slow and cruising speeds are achieved using the electric motors, for full speed, additional power is supplied by the gas turbine.

The electric motors are positioned forward of the gear unit and drive the propeller shaft directly without a reduction gear via multi-disc clutches. The gas turbine is linked to the cross-connect gear via an over-running clutch. Electrical power for propulsion an hotel use is provided by four MTU 20V4000 M53 gensets each of 3,015kW at 1,800 rpm.


CODELAG propulsion arrangement for the German F125 Baden Württemberg Class frigate
Image credit: Renk AG



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