Twin skeg ship

Abstract

Provided is a twin skeg ship equipped with a pair of left and right skegs provided at a bottom of a stern, propellers provided behind the pair of left and right skegs; and fins provided in front of the propellers only at inner sides in a ship width direction with respect to the skegs and configured to radially extend from rotational centers of the propellers.

1 . A twin skeg ship comprising:
 a pair of left and right skegs provided at a bottom of a stern;   propellers provided behind the pair of left and right skegs; and   fins provided in front of the propellers only at inner sides in a ship width direction with respect to the skegs and configured to radially extend from rotational centers of the propellers.   
     
     
         2 . The twin skeg ship according to  claim 1 , wherein flows at the inner sides in the ship width direction with respect to the skegs are slower than flows at outer sides in the ship width direction with respect to the skegs in the pair of left and right skegs. 
     
     
         3 . The twin skeg ship according to  claim 1 , wherein the fins strengthen upward flows occurring at the inner sides of the skegs in the ship width direction in front of the propellers. 
     
     
         4 . The twin skeg ship according to  claim 1 , wherein rotating directions of the propellers are set to be inward directions in which upper portions of the propellers rotate from the outer sides in the ship width direction toward the inner sides in the ship width direction. 
     
     
         5 . The twin skeg ship according to  claim 1 , wherein the fins weaken upward flows occurring at the inner sides of the skegs in the ship width direction in front of the propellers. 
     
     
         6 . The twin skeg ship according to  claim 1 , wherein rotating directions of the propellers are set to be outward directions in which upper portions of the propellers rotate from the inner sides in the ship width direction toward the outer sides in the ship width direction. 
     
     
         7 . The twin skeg ship according to  claim 1 , further comprising tubular ducts which are provided in front of the propellers while crossing the inner sides of the skegs in the ship width direction and the outer sides of the skegs in the ship width direction and whose outer diameters are gradually reduced from a bow side toward a stern side. 
     
     
         8 . The twin skeg ship according to  claim 1 , further comprising semi-cylindrical ducts which are provided in front of the propellers only at the inner sides of the skegs in the ship width direction and whose outer diameters are gradually reduced from a bow side toward a stern side. 
     
     
         9 . The twin skeg ship according to  claim 7 , wherein the ducts are supported on ends of outer circumferential sides of the fins or on intermediate portions of the fins.