Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having fluid channeling or entrapping configuration
Patent
1982-03-17
1984-05-01
Blix, Trygve M.
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having fluid channeling or entrapping configuration
114 56, 114274, 114288, 114289, B63B 132
Patent
active
044454538
ABSTRACT:
A hull is provided including opposite longitudinal upstanding outer sides and a central depending longitudinal displacement-type keel. The forward ends portions of the outer sides and the keel curve inwardly and upwardly, respectively, and merge to form a forwardly and upwardly tapering bow. The lower portions of the sides, rearward of the bow, terminate downwardly in downwardly and outwardly inclined outer side surfaces of opposite side downwardly and outwardly inclined displacement-type cutwaters whose lower marginal portions are rearwardly and downwardly inclined. The cutwaters include inwardly and upwardly inclined inner side surfaces extending longitudinally thereof and which diverge upwardly away from the corresponding outer side surfaces. The keel, rearward of the bow, includes a rearwardly and downwardly inclined lower extremity extending longitudinally of the hull throughout a major portion of the length of the keel rearward of the bow and upstanding opposite side surfaces spaced inwardly of said inner side surfaces of said cutwaters. Generally semi-cylindrical downwardly opening tunnel roof surfaces disposed on opposite sides of the keel and extending longitudinally of the hull bridge and interconnect the upper marginal portions of corresponding inner side surfaces of the cutwaters and side surfaces of the keel. The tunnel roof surfaces include upper portions which are substantially horizontally disposed.
REFERENCES:
patent: 2020792 (1935-11-01), Maynard et al.
patent: 2474667 (1949-06-01), Harvey
patent: 3223066 (1965-12-01), Irving
patent: 3702598 (1972-11-01), Szptyman
patent: 3762355 (1973-10-01), Raynes
patent: 3807337 (1974-04-01), English et al.
patent: 4263866 (1981-04-01), Shirley
Blix Trygve M.
Fong, Jr. Hiram L.
Jacobson Harvey B.
Shum Ivy M.
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