Patent ID: 7658159

Claim:
A foreship configuration of a vessel of the displacement type, wherein the foreship is defined as part of the vessel in front of a midship mark of the vessel, wherein the vessel has a transversely symmetrical hull shape about a vertical plane through a vessel centre line CL, wherein a stem line of the vessel turns substantially aftwards from a transition point B just above a vessel design water line Tdwl and to an upper point C of the hull at the stem, so as to form a convex stem contour line from the vessel, the vessel transition point B, or from a bottom line BL of the vessel up to said upper point C when viewing the vessel in side view, wherein for any one of vessel draughts between a ballasted or fully loaded vessel, a default water line of the vessel at the stem will be at a location on said convex stem contour line for such draught in question; wherein the foreship has frames with respective defined first, second, third, fourth and fifth frame lines 10 , 20 , 30 , 40 , 50 , transversely and symmetrical about the centre line CL vertical plane, and mutually spaced in the longitudinal direction of the foreship, the first line being foremost, wherein said frame lines start from respective depth locations D 5 , D 4 , D 3 , D 2 , D 1 at said plane, the first frame line 10 starting at location D 5 which is higher than the other frame lines; wherein location D 4 is higher than location D 3 , and location D 3 is higher than locations D 2 and D 1 ; wherein the first frame line 10 has an upper location F 1 at said plane and is bent outwards from said plane between the depth location D 5 and the upper location F 1 to a maximum lateral location E 1 , wherein the second frame line 20 has an upper location F 2 at said plane and is bent outwards from the plane between the depth location D 4 and the upper location F 2 to a maximum lateral location E 2 which is beyond the lateral location E 1 , wherein the third frame line 30 has an upper location F 3 at said plane and is bent outwards from the plane between the depth location D 3 and the upper location F 3 to a maximum lateral location E 3 which is beyond the lateral location E 2 , wherein the fourth frame line 40 has an upper location F 4 at a stem spray board transition line passing through the upper point C of the stem and separating an upper region of the stem from a spray board located above the stem and said fourth frame line 40 is bent outwards from the plane between the depth location D 2 and the upper location F 4 to a maximum lateral location E 4 which is beyond the lateral location E 3 , wherein the fifth frame line has an upper location F 5 at the stem board transition line and is bent outwards from the plane between the depth location D 1 and the upper location F 5 to a maximum lateral location E 5 which is beyond the lateral location E 4 , and wherein the upper location F 4 of the fourth frame line 40 is closer to said centre line plane than the upper location F 5 of the fifth frame line.