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1. (WO1997010993) SUBMARINE PROPULSION CONTROL SYSTEM

Pub. No.:    WO/1997/010993    International Application No.:    PCT/GB1996/002186
Publication Date: Mar 27, 1997 International Filing Date: Sep 5, 1996
IPC: B63G 7/02
B63G 8/14
Applicants: GEC-MARCONI LIMITED
ADAMS, Richard
Inventors: ADAMS, Richard
Title: SUBMARINE PROPULSION CONTROL SYSTEM
Abstract:
An underwater vehicle (1) having a negative buoyancy comprises thrust units (4, 5) by which it can hover. Slow speed manoeuvrability while hovering is achieved by moving the position of a mass (9) fore and aft and/or side to side such as to cause the vehicle to pitch or roll and thereby vector the otherwise vertical thrust such that the vehicle is propelled in the direction in which the mass has moved.