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Oheka II by Lurseen Yachts - 22.5m built 1927

Discussion in 'Lurssen Yacht' started by archnav.de, Nov 21, 2003.

  1. archnav.de

    archnav.de Senior Member

    Joined:
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    Location:
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    Lürssen Oheka II 22.5m built 1927

    22.5 m long,
    Displacement 22.5 tons.
    Speed of 34 knots

    Pictureand information was taken from:
    http://www.prinzeugen.com/DesignManufacture.htm

    The attention of the German Navy was drawn to Oheka II , a highly innovative luxury motor yacht built in 1927 by the German boatyard Luerssen for a Jewish banking tycoon who emmigrated to the United States from Germany. The name "Oheka" originated from a monogram of its owner's name, Otto HErmann KAhn. It's round bottomed hull was 22.5 m long, and displaced 22.5 tons. It reached a top speed of 34 knots, making it the world's fastest boat in its class. There is no basis in fact for the common misconception that Oheka II was a "rum runner" used for smuggling.

    In Oheka II, Luerrsen overcame many of the drawbacks of the round bottomed displacement hull. The boat ploughed through the water by the brute force of three 550hp Maybach engines. The composite use of wood planks over alloy frames reduced weight. The innefficient tendency for round hulls to "squat" stern-down in the water at high speeds was counterbalanced by a hull form that flattened towards the stern, providing hydrodynamic lift where it was needed.

    Oheka II's combination of speed, strength and seaworthyness was exactly what Naval command wanted. In November 1929, Luerssen was given a contract to build a boat to the same basic design, but with two torpedo tubes on the forecastle, and a slightly improved top speed. It was to become S-1, the Kriegsmarine's first Schnellboot and the basis for the all other S-Boats built during World War 2.

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    Last edited: Aug 20, 2004
  2. archnav.de

    archnav.de Senior Member

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  3. archnav.de

    archnav.de Senior Member

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    Picture number 3

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  4. archnav.de

    archnav.de Senior Member

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    Picture number 4

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  5. archnav.de

    archnav.de Senior Member

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    Picture number 5

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  6. archnav.de

    archnav.de Senior Member

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    Location:
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    Last edited: Aug 20, 2004
  7. elf1elf

    elf1elf New Member

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    Mar 3, 2008
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    Location:
    Copenhagen, Denmark
    Oheka II photos incorrect.

    Hi all

    Photo No. 4 and No 5 are not from the Oheka II.

    Photo No. 4
    THe only place on Oheka II where there is a cloth root is the rear bench behind the cabin. it is not deep enough fit this photo, therefore the photo is of a different boat.

    Photo No. 5
    Oheka II was powered by 3 Maybach VL2 engines. These were V-12 engines also used in Zeppelins.

    There is a photo of this at the below link.

    http://www.airliners.net/open.file?id=0753243&size=L&width=1024&height=780&sok=&photo_nr=

    The photo shows a single row upright engine so this is a different boat also.