Tanker vessel construction

Details Tanker vessel construction Tanker vessel construction

Filed on

1980-08-21

Date issued

1982-01-05

Examiner

Blix, Trygve M.

Patent Class

Ships

SubClass

Building

SubSubClass

Freighters

Other Related Categories

114 65R, 114 85, 114 78, B63B 2508

Type

Patent

Status

active

Patent number

043088155

Description

ABSTRACT:
A tanker vessel for carrying liquid cargoes having a specific gravity which is less than that of sea water. The vessel includes a hull, comprising a bottom and sides, a top deck and at least one cargo compartment. The top deck is located at a distance above the hull bottom which is approximately equal to H(S.sub.w /S.sub.c), where H represents the distance from the bottom of the vessel to its waterline, S.sub.w represents the specific gravity of sea water, and S.sub.c represents the specific gravity of the liquid cargo. The compartment is filled with cargo to a point below the top deck of the vessel which is located at a distance above the vessel's bottom which is approximately equal to H(S.sub.w /S.sub.c -0.03H.
In another embodiment, the top deck is located at a distance above the hull bottom which is approximately equal to H(S.sub.w /S.sub.c.sbsb.L), where S.sub.c.sbsb.L represents the specific gravity of the lightest cargo the vessel is adapted to carry, and swash bulkheads extend downwardly from the top deck into the cargo compartments to a point located at a distance above the vessel's bottom which is approximately equal to H(S.sub.w /S.sub.c.sbsb.H)-0.35H, for damping surface movement of the cargo during movement of the vessel. The compartments are filled with cargo to a point below the top deck located at a distance above the vessel's bottom which is approximately equal to H(S.sub.w /S.sub.c), where S.sub.c represents the specific gravity of the cargo stored in the compartments.

REFERENCES:
patent: 3357391 (1967-12-01), Field
patent: 3499410 (1970-03-01), Field
patent: 3554152 (1971-01-01), Campbell
patent: 3640237 (1972-02-01), Phelps
patent: 3653531 (1972-04-01), Zurmuehlen
patent: 3745960 (1973-07-01), Devine
Intl. Maritime Dict. (6th Ed. 1958) p. 748.

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