Ships – Floating platform – Multiple leg
Patent
1979-04-30
1981-04-28
Basinger, Sherman D.
Ships
Floating platform
Multiple leg
405202, B63B 3500, B63B 3544
Patent
active
RE0305901
ABSTRACT:
This invention relates to a structure floating on a body of water. Three or more spar buoy-type floats support the structure above the water. The structure is connected to anchors in the floor of the body of water by [elongated members such as] large diameter pipe for example. There are no other anchoring connections in the system. Each spar buoy has a unique structure so that vertical forces and overturning moments on the floating structure are minimized. [The spar buoys have a buoyancy means having a volume of two parts.] g The buoy of each spar buoy has a volume of two parts. The first part can be defined as resulting from a straight, vertical, prismatic shape which runs the entire vertical length of the [buoyancy means.] buoy. The volume of this prismatic portion comprises between about 40 and 80 percent of the total displacement. The [buoyancy means have a second or] second part has an auxiliary volume of displacement which runs considerably less than the vertical length of the prismatic portion. This critical arrangement of buoyancy between these two parts as taught in this invention minimizes mooring forces imposed on the vertical elongated members, such as occur to react forces on the structure due to passing waves.
REFERENCES:
patent: 2399656 (1946-05-01), Armstrong
patent: 2939291 (1960-06-01), Schurman et al.
patent: 3154039 (1964-10-01), Knapp
patent: 3163220 (1964-12-01), Haeber
patent: 3224401 (1965-12-01), Kobus
patent: 3327780 (1967-06-01), Knapp et al.
Basinger Sherman D.
Gassett John D.
Standard Oil Company (Indiana)
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