(1) The alternate rise and fall of the bow of a vessel proceeding through waves; also called hobby horsing (2) The theoretical distance advanced by a propeller in one revolution. (3) Tar and resin used for caulking between the planks of a wooden vessel.

A tar substance obtained from the pine tree and used in paying the seams of a vessel. Motion of vessel.

Said of a boat which turns end over end in very rough seas.

Areas of corrosion.

Place where cargo leaves the care and custody of carrier.

Location where cargo enters the care and custody of carrier.

Anything that is straightforward and easy.

To braid used with small stuff.

To gain hydrodynamic lift, causing the boat to lift, rising slightly out of the water so that it is gliding over the water rather than plowing through it, reaching speeds in excess of those normally associated with its waterline length.

The speed needed for a boat to begin planing.

On a wooden vessel, the outermost deck plank covering the gunwale. also called Covering Board

Wood boards used to cover the ribs, frames, deck or hull of a wooden vessel.

Broad planks used to cover a wooden vessel's sides, or covering the deck beams.

Flat steel stock of various thicknesses used in the construction of a ship to form the sides and decks.

The difference between the diameter of a shaft rod, etc., and that of the hole in which it works.

Freedom of movement.

A filter element whose medium consists of a series of uniform folds and has the geometric form of a cylinder, cone, disc, plate ... Synonymous with "convoluted" and "corrugated".

The mark stencilled in and painted on a ship's side, designated by a circle and horizontal lines to mark the highest permissible load water lines under different conditions.

A series of horizontal lines, corresponding to the seasons of the year and fresh or saltwater, painted on the outside of a ship marking the level which must remain above the surface of the water for the vessel's stability.

A figure marked on the side of merchant vessels to indicate allowed loading depths. Named after Samuel Plimsoll, English Member of Parliament and maritime reformer.