Patent ID: 7171916

Claim:
A ship comprising a tank for containing liquid, the tank comprising: a sealing wall comprising an innermost surface of the tank that is configured to directly contact liquid contained in the tank; a structural wall of the ship comprising a hull; a plurality of anchors positioned between the sealing wall and the structural wall, the plurality of anchors comprising a first anchor elongated in a first direction generally perpendicular to at least one of the sealing wall and the hull, the first anchor comprising a first end connected to the sealing wall and a second end connected to the hull; and an intermediate wall positioned between the structural wall and the sealing wall, wherein the intermediate wall is configured to slide relative to both the sealing wall and the hull, and wherein the intermediate wall comprises a surface configured to slide relative to the sealing wall while in contact with the sealing walls, wherein the intermediate wall comprises a plurality of through holes in a direction substantially perpendicular to at least one of the sealing wall and the hull, wherein the first anchor is placed in one of the plurality of through holes while the first and second ends are connected to the sealing wall and the hull, respectively, wherein the intermediate wall comprises a first insulating layer, a second insulating layer and a sealing layer located between the first and second insulating layers, and wherein the first anchor comprises a sealing plate configured to be liquid-tightly connected with the sealing layer, wherein the sealing plate comprises at least one corrugated area configured to allow stretching and shrinkage when a force is applied thereto in a direction on a plane where the sealing plate is placed.