B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
114/33, 341/79
B63H 25/00 (2006.01) B63H 25/06 (2006.01)
Patent
CA 1262215
ABSTRACT There is provided the combination of a towing vessel and a towed vessel, the towed vessel having a freely swinging main rudder. An angle sensor determines the angle of the main rudder with respect to the towed vessel, and then active flap is provided at the rear of the main rudder. An operative device dictates the orientation of the active flap with respect to the main rudder. A tow line extends from the towing vessel to the towed vessel, and the towed vessel includes a tow line direction sensor. Control means are provided for controlling the operative device in response to input from the tow line direction sensor and the angle sensor.
482408
Mackenzie John S.
Sim & Mcburney
LandOfFree
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