Means for mounting a thruster propeller unit

Details Means for mounting a thruster propeller unit Means for mounting a thruster propeller unit

B - Operations, Transporting

63

H

115/27

B63H 5/00 (2006.01)

Patent

CA 1220387

ABSTRACT OF THE DISCLOSURE The mounting of a thruster propeller unit in the bottom plating of a vessel is facilitated by the use of lifting lines, operable from within the vessel. Each line is made to pass a lock chamber adjacent to an opening in the bottom plating, outside the opening where the thruster propeller is to be fitted. The lock chamber includes a first, rigid tubular member, which is the housing for a slide valve, as well as a second tubular member, which is resilient at least in the transverse direction. The two tubular members define a passage being substantially wider than the diameter of the lifting line. The second tubular member is at its top provided with a sealing sleeve which fits around the line. The locking chamber is connected to a source of compressed air, which makes it possible to main- tain a pressure within the chamber balancing the pressure of the surrounding water.

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