PURPOSE: To enable an anchor roller member to be readily attached to the gunwale of a ship whose bow outside plating has a V-shaped horizontal section, by projecting the bow deck and a gunwale in the direction of the craft width so that a part straight in the ship width direction is formed at the bow end.

CONSTITUTION: The hull outside plating 1 has a V-shaped horizontal section and is formed so as to incline forward and connected to a bow deck 2 and a gunwale 3 at the upper end line 33. At the bow end, the gunwale 3 and the bow deck 2 project in the craft width direction, forming projecting parts 31. On the upper-surface deck, thereof, an anchor roller member 4 is placed. Thereby, the anchor roller member can be placed at the bow tip part without using a special mounting member.