Patent ID: 9254897
Filing Date: 2016-02-09
CPC Classification: B63B,Y10T

Claim Text:
1. A method of fabricating a hydrodynamic appendage for a ship, the method comprising the steps of: forming two metal half-shells having outside surfaces that form flanks of a hydrodynamically-active portion of the appendage; forming a metal head including means for securing the appendage to the ship; and assembling together the half-shells and the head in such a manner that the head is sandwiched between top ends of the two half-shells and so as to form an internal volume between the two half-shells, the assembly formed by the head sandwiched between the two half-shells being welded together so as to make the internal volume of the appendage watertight, and the head including recesses defined by side edges that extend to come into contact with side edges of the top ends of the half-shells.