Markings stamped and painted amidships on the side of a vessel, to indicate the minimum permissible freeboard. Also called PLIMSOLL MARKS



Related Terms

LANGMUIR DIFFUSION PUMP

A type of diffusion pump in which the mercury vapor emerges from a nozzle, giving it motion in a direction away from the high-vacuum side of the pump.

BILGE KEELS

Pair of keels on either side of the hull, usually slanted outwards. In yachts, they allow the use of a drying mooring, the boat standing upright on the keels (and often a skeg) when the tide is out.

ELEPHANTA

A strong southerly or southeasterly wind which blows on the Malabar coast of India during the months of September and October and marks the end of the southwest monsoon.

JACOB'S LADDER

A rope ladder suspended from the side of a vessel and used for boarding.

TENSILE STRESS

A stress that causes two parts of an elastic body, on either side of a typical stress plane, to pull apart.

BACKSTAY

The stay extending from ship's mastheads to the side of the ship

RISE OF FLOOR

The amount by which the line of the outer bottom plating amidships rises above the base line, when continued to the moulded breadth lines at each side.

HERRINGBONE GEAR

The equivalent of two helical gears of opposite hand placed side by side.

PLIMSOLL MARK

A mark on a ship’s side indicating how deeply she may be loaded.

TO LIST

To incline or be inclined to one side

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