Blohm + Voss Ag

Blohm Voss Holding Ag

Hansjorg Klante

Hans Langenberg

Jurgen Engelskirchen

Dieter Koenig

Manfred Niemann

Wilhelm Jenny

A propeller drive for watercraft, preferably for ferry boats and car ferries, which has two propellers located one behind the other in the center-line plane. The forward propeller is preferably located on a marine shaft which exits the hull, and can be driven by means of a drive system. The aft propeller is preferably driven by means of a separate drive system, and the aft propeller is realized so that it can pivot by at least about 90 degrees around an axis, the axis being preferably vertical.

Propeller drive for watercraft

An anchoring system for a converted tanker, including a fluid transfer line extending from the sea bed to the tanker, uses a vertical hollow shaft which is integrated into the stern portion of the tanker. A buoy, which is generally annular, is located under the vertical hollow shaft and anchored. Attached to the buoy, vertically above the buoy, is a hollow columnar superstructure which is disposed coaxially with the hollow shaft and is unaffected by weather. The superstructure is supported and located in vertical and horizontal directions coaxially inside of the hollow shaft by top and bottom pivot bearings which may be lubricated by sea water. The anchoring per se of the tanker takes place through the hollow superstructure member and the anchored buoy. The shaft and superstructure can be evacuated dry without any sea water, for maintenance personnel to inspect or replace the bearings and for completing repairs to the transfer line which is disposed within the hollow superstructure.

Anchoring arrangement for a tanker, including a fluid transfer system

Growing community of inventors

Wedel, Germany

Hansjorg Klante