The Type 745 Stollergrund-class multi-purpose ship was a class of multi-purpose ships built for the Wehrtechnische Dienststelle 71 (WTD 71) of the German Navy in Eckernförde and the Marinearsenal Wilhelmshaven. Three units are still in use for the WTD 71, the other two boats were sold to the Israeli Navy.
Development As a replacement for older test and support vehicles, five small test boats (designation according to the list of ship numbers) were commissioned from Fr. Lürssen Werft as general contractor on 23 October 1987. The Stollergrund class is derived from the and was also built as a subcontract at the Kröger shipyards and the Elsflether shipyards.
The hull is made of steel and divided into eight compartments by seven bulkheads. For better maneuvering, cross-thrust steering systems are installed in the fore and aft. The boats are versatile and take the necessary equipment on board in two containers. Fixed equipment includes a ship's crane and accommodation for embarked personnel.
Ships of class + Stollergrund-class multi-purpose shipPennant numberNameBuildersLaunchedCommissionedDecommissionedStatusY863StollergrundKröger-Werft1 September 198831 May 19892018On saleY864MittelgrundElsflether Werft26 April 198921 September 1989ActiveY865KalkgrundKröger-Werft2 February 19898 November 198930 September 2004Sold to Israel as INS Bat YamY866BreitgrundElsflether Werft2 October 198914 February 1990ActiveY867BantKröger-Werft13 July 198916 May 19909 May 2003Sold to Israel as INS Bat Galim
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