Ships – Boats – boat component – or attachment – Lifeboat
Patent
1986-02-14
1988-04-26
Peters, Jr., Joseph F.
Ships
Boats, boat component, or attachment
Lifeboat
104114, 414138, 114365, 114362, B63B 2730
Patent
active
047397217
ABSTRACT:
This invention relates to a boat designed as a self-hoisting unit for the vertical and horizontal transfer of persons and/or equipment from a ship to an offshore platform and vice versa. The boat carries a hollow mast forming a guide for a cable, the upper end of which will be attached to a carrier structure extending outwardly from a platform or ship. The mast is held by shrouds so as to withstand large flexural strains. For compensating sea-swell, the lower end of the cable passes over a damper unit comprising an hydraulic cylinder associated with pulleys of two opposed tackle-blocks. The cable is driven by a winch so that the boat can autonomously hoist itself to the platform deck level, or lower itself down to the sea or onto the deck of a ship. The mast height is sufficient for generating an uprighting torque ensuring horizontal stability of the boat during its ascent and descent. The boat is suitable for carrying a large number of persons, for instance as a lifeboat or for a shuttle service between offshore platforms.
REFERENCES:
patent: 2103708 (1937-12-01), Campbell
patent: 2998148 (1961-08-01), Himel, Jr.
patent: 3064829 (1962-11-01), Winfrey et al.
patent: 3675900 (1972-07-01), Barron et al.
patent: 4025055 (1977-05-01), Strolenberg
patent: 4166545 (1979-09-01), Martinussen et al.
patent: 4395178 (1983-07-01), MacDonell et al.
patent: 4412598 (1983-11-01), Kimon et al.
Peters Jr. Joseph F.
Swinehart Edwin L.
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