To mark a course on a chart.

ACRONYM - MATERIAL SAFETY DATA SHEETS

This property is the ratio of the specific weight of air or gas to that of dry air at the same pressure and temperature.

Wind-bound. When a vessel is kept in port by a head wind.

The forward end of a ship's after superstructure, where the poop deck descends to the upper deck.

(1) A longitudinal crack in a mast or other spar. (2) The shivers of a sail when sailing too close to the wind. (3) As a verb, to let it out.

To remove a reef from a sail and hoist the sail aloft

A block and tackle attached to the boom and the deck to prevent the main from gybing when sailing downwind

Small, steep disorderly waves at rapid intervals.

Surface resistance to relative motion, which slows down movement and causes heat.

Used in meteorology to describe boundaries between hot and cold air masses. This is typically where bad weather is found.

On a square-rigged ship, a small triangular sail set above the skysail in fair weather. A square version is called a Moonraker.

Thin sheets of copper applied to the hull of a wooden ship below the waterline to prevent the toredo worm eating the planks, and also to limit the growth of weed, barnacles or other marine life.

During the operation of tacking, the moment when a sailing vessel is head to the wind and hanging there, with her head not paying off on the opposite tack. Such a vessel is said to be "in stays" or "in irons".

A dimensionless flow parameter, ( Jnr/m), in which J is a significant dimension, often a diameter, n is the fluid velocity, r is mass density, and m is dynamic viscosity, all in consistent units.

A dining room on a ship.

A pallet designed so that the forks of a fork lift truck can be inserted from all four sides. See Fork lift.

The relative humidity of a gas (or air) vapor mixture is the ratio of the partial pressure of the vapor to the vapor saturation pressure at the dry bulb temperature of the mixture.

(0.2+0.02 log10(Vc)) Vc (4d/3D)2, for passenger ships the following formula is added: 1.25 (GT+10000)/10000 (N1+(N2/10)), where Vc is the volume of cargo holds, D is the distance between ship's bottom and the uppermost deck, d is the draught N1 is the num ...