Multirudder steering system for multihull boats

Details Multirudder steering system for multihull boats Multirudder steering system for multihull boats

1976-09-30

1978-04-04

Kunin, Stephen G.

Ships

Steering mechanism

Rudders

114 39, 114 61, B63H 2506

Patent

active

040820530

ABSTRACT:
In a twin hull boat, a rudder mounted in the space between the hulls and forward of the middle of the boat is connected to the rudder or rudders at or near the stern of the boat for deflection in the direction opposite to that of the stern rudder or rudders, the deflection being relatively less, the closer the forward rudder is to the middle of the boat. In a trimaran, a forward rudder is provided on each side of the main hull in the space between the main hull and the outer hull and these rudders are similarly linked to the movement of the rudder at or near the stern of the main hull. Laterally offset rudders, the forward rudders in the case of a trimaran, and aft rudders on the respective hulls of a catamaran, are so interconnected in the steering system that whichever rudder is on the inside of a turn being performed, it is given a greater deflection than the rudder on the outside of the turn. Forward rudders are shown that are designed to be raised when the boat is under sail under a course other than a close-hauled one, and an arrangement is also shown for releasing the linkage between the forward and stern rudders when the boat is being sailed offwind.

REFERENCES:
patent: 1780767 (1930-11-01), Scott-Paine
patent: 2585599 (1952-02-01), Tchetchet
patent: 3083382 (1963-04-01), Havens et al.
patent: 3223065 (1965-12-01), Wilson, Jr.
patent: 3922994 (1975-12-01), Long

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