Lng ship

Abstract

To obtain an economical hull structure by employing an independent prismatic tank having a large tank volume with respect to a ship size and reducing material cost. Provided is a LNG ship having a structure in which a substantially prismatic tank is installed inside a hold while not being integrated with a hull structure material, wherein a tank bottom surface is provided with inclined surfaces formed at the left and right sides of a center line direction of the ship as a boundary so that each angle intersecting a horizontal line becomes equal to or smaller than 4.0°, and support bodies integrated with the hull structure material are arranged so as to correspond to the inclined surfaces and the tank is put on the support bodies.

1 . A LNG ship having a structure in which a substantially prismatic tank is installed inside a hold while not being integrated with a hull structure material,
 wherein a tank bottom surface is provided with inclined surfaces formed at the left and right sides of a center line direction of the ship as a boundary so that each angle intersecting a horizontal line becomes equal to or smaller than 4.0°, and   support bodies integrated with the hull structure material are arranged so as to correspond to the inclined surfaces and the tank is put on the support bodies.   
     
     
         2 . The LNG ship according to  claim 1 , wherein a flat surface is formed at a center portion of the tank bottom surface, a receiving body integrated with the hull structure material is provided so as to correspond to the flat surface, and the flat surface is installed on the receiving body. 
     
     
         3 . The LNG ship according to  claim 1 , wherein the support bodies are arranged at the left and right sides of the center line direction of the ship as the boundary so as to be located at a plurality of positions separated from each other in a ship width direction. 
     
     
         4 . The LNG ship according to  claim 1 , wherein the support bodies are arranged at the left and right sides of the center line direction of the ship as the boundary so as to be located at a plurality of positions separated from each other in a ship width direction and are provided along a ship longitudinal direction. 
     
     
         5 . The LNG ship according to  claim 1 , wherein the support bodies are arranged at the left and right sides of the center line direction of the ship as the boundary so as to be located at a plurality of positions in a zigzag pattern. 
     
     
         6 . The LNG ship according to  claim 1 , wherein a key portion is integrally formed with a center upper portion of the tank in a protruding manner and anchor point chocks are provided in the hull structure material so as to be located at front and rear sides in the center line direction of the ship corresponding to the key portion. 
     
     
         7 . The LNG ship according to  claim 1 , wherein a material of the prismatic tank is selected from aluminum alloy, 9% nickel steel, and stainless steel. 
     
     
         8 . The LNG ship according to  claim 1 , wherein the LNG ship includes a LNG carrier, FLNG, FSRU, and SRV.