Ships – Towing or pushing – Nested vessels
Patent
1980-04-17
1982-04-27
Sever, Frank
Ships
Towing or pushing
Nested vessels
114126, 114249, B63B 2100
Patent
active
043264794
ABSTRACT:
An apparatus is disclosed for decreasing yaw of a first vessel when the first vessel is pulled by a second vessel which may alternatively be positioned to lessen water resistance when the first vessel is pushed by the second vessel. The apparatus includes a fin movably secured to the first vessel such that the fin may be moved from a first position wherein the fin is in the water to decrease yaw to a second position wherein water resistance is lessened. The apparatus may further provide a linkage for coupling the first and second vessels wherein the apparatus permits freedom of movement of the first vessel relative to the second for pitching, heaving, and, if desired rolling motions when the vessels are coupled and further functions as a skeg for the first vessel when the first is pulled by second vessel.
REFERENCES:
patent: 2411156 (1946-11-01), Grimminger
patent: 2984202 (1961-05-01), Lunde
patent: 3200782 (1965-08-01), Walden et al.
patent: 3257985 (1966-06-01), Glosten
patent: 3257986 (1966-06-01), Glosten
patent: 3310019 (1967-03-01), Standridge et al.
patent: 3516100 (1970-06-01), Ellis
patent: 3568621 (1971-03-01), Kawasaki
patent: 3613622 (1971-10-01), Bueller
patent: 3651778 (1972-03-01), Derecktor
patent: 3726248 (1973-04-01), Glosten
patent: 3892195 (1975-07-01), Janssen
The Control of Yaw in Towed Barges-Harry Benford.
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