LNG Ship or LPG 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 or a LPG 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 the tank is a long tank 30 , which has a larger dimension of a ship longitudinal direction than that of a ship width direction and is installed inside the hold along a ship longitudinal direction, and the long tank 30 is divided into two or more liquid cargo compartments 30 - 1, 30 - 2, 30 - 3 in the ship longitudinal direction by one or more bulkhead plates 31 , each of which is formed in the ship width direction as one plate.

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 the tank is a long tank, which has a larger dimension of a ship longitudinal direction than that of a ship width direction and is installed inside the hold along the ship longitudinal direction, and   the long tank is divided into two or more liquid cargo compartments in the ship longitudinal direction by one or more bulkhead plates, each of which is formed in the ship width direction as one plate.   
     
     
         2 . The LNG ship according to  claim 1 , wherein a tank group is formed in the ship longitudinal direction so that tanks, each of which does not have bulkhead, are arranged at the front and rear sides of the long tank, and a space between the long tank and each tank adjacent to the long tank has a cofferdem structure. 
     
     
         3 . The LNG ship according to  claim 1 , wherein the long tank is provided at the left and right sides of a center line direction of the ship as a boundary. 
     
     
         4 . The LNG ship according to  claim 1 , wherein a key portion is integrally formed with an upper portion of a liquid cargo compartment, which is located at a center in the ship longitudinal direction of the long tank, in a protruding manner and anchor point chocks for thermal deformation 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. 
     
     
         5 . The LNG ship according to  claim 1 , wherein the long tank includes two liquid cargo compartments in the ship longitudinal direction, a key portion is integrally formed with a substantially center upper portion of the long tank in the ship longitudinal direction, in a protruding manner and anchor point chocks for thermal deformation 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. 
     
     
         6 . The LNG ship according to  claim 1 , wherein an upper portion of the bulkhead plate of the long tank is separated from a ceiling plate of the long tank so as to form a separation space and the adjacent liquid cargo compartments communicate with each other via the separation space. 
     
     
         7 . The LNG ship according to  claim 1 , wherein a lower portion of the bulkhead plate of the long tank is separated from a bottom plate of the long tank so as to form a separation space and the adjacent liquid cargo compartments communicate with each other via the separation space. 
     
     
         8 . The LNG ship according to  claim 1 , wherein the LNG ship includes a LNG carrier, FLNG, FSRU, and SRV. 
     
     
         9 . The LPG ship according to  claim 1 , wherein LPG is transferable.