eye

The eye is the forward section of a ship's bow where the hawseholes are cut through the hull. These openings allow anchor cables and mooring lines to pass from the forecastle deck down through the bow structure to the water below, without the lines having to drag across the main deck or rub against the rail. The eye is typically reinforced with metal castings or doubling plates around each hawsehole to withstand the abrasion and stress of heavy cables under load.

Hawseholes themselves are large circular openings, usually 300 to 450 millimeters in diameter depending on the vessel's size and intended anchor chain diameter. A typical large ship might have two or three hawseholes in the eye, positioned to allow cables to run down at the correct angle without jamming. The holes are lined with cast iron pipe or brass bushing to prevent corrosion and provide a smooth bearing surface for the cable as it moves through the opening during anchoring or mooring operations.

Structural and operational role

The eye region must be heavily constructed because it experiences concentrated stresses: the bow impact from waves, the tension from anchors and mooring gear, and the localized pressure where cables bend through the hawseholes. This is why shipyard workers reinforce the eye with stringers, frames, and extra plating. During dry dock, the eyes are carefully inspected for cracks, deformation, and corrosion of the bushing material, as failure in this area could lead to cable loss or structural damage in heavy weather.

The term 'eye' likely derives from its visual resemblance to an eye when viewed head-on: the paired hawseholes look like eyes on the ship's face. In older maritime speech, 'forward of the eye' meant ahead of the hawseholes. Modern usage is consistent across shipbuilding: the eye is always the foremost part of the bow, and damage to it is serious because replacement requires cutting into and rewelding the ship's primary hull structure.