The amount by which magnetic variation changes up or down each year in a particular area. The annual increase or decrease is printed in the compass roses on each chart and may make a significant difference over a number of years.

A phrase preceding the signature of a drawer or endorser of a negotiable instrument; signifies that the instrument is passed onto subsequent holders without any liability to the endorser in the event of nonpayment or nondelivery.

The official who is in charge of a harbor, enforcing all its applicable regulations.

Towards the center line of a ship (towards the center).

Canvas, wood or rope used over the side to protect a vessel from chafing when alongside another vessel or a dock.

The consolidation of a quantity of individual items into one large shipping unit for easier handling.- Loading one or more large items of cargo onto a single piece of equipment, such as a pallet.

Slang for anchor

Small boat similar to and including jetskis

Order given to a boat's crew when going alongside under oars. Denotes that boat has sufficient way, and that oars are to be placed inside the boat.

Ship's boat kept ready for immediate lowering while at sea. When used for life-saving, it was called an "accident boat" or lifeboat.

Material that stores energy, although mass will also retain coolness. The thermal storage capacity of a material is a measure of the material's ability to absorb and store heat.

An analytical method of assessing machine health by quantifying and examining ferrous wear particles suspended in the lubricant or hydraulic fluid.

A labyrinth type filter having the active surfaces continuously splashed with oil. Most pollutants are absorbed by the oil which when circulated releases its pollutants, which sink by gravity to the bottom of the oil pan.

Those causes of loss for which the carrier is not legally liable. The elemental risks of ocean transport.

Ties used to tie up the sails when they are furled to the boom or yards.

A device for mounting cylinders.

A low headroom space below decks used for provisions or spare parts, or miscellaneous storage.

Line led forward, from quarter of a vessel, to prevent her from moving astern.

Breaking away of a mass of ice from a glacier or iceberg.

A stopper used to prevent water from entering the hawse hole in heavy weather.