To push a sail out so that the wind fills the opposite side, thus slowing the boat down.

Alternatively letting the sails draw, then spilling wind so as to keep a vessel more or less in one place until space is available, marking time.

A spring line from the stern of a boat to mid ships to stop forward movement

A navigation instrument used to measure the apparent height of a landmark whose actual height is known, such as the top of a lighthouse. From this information, the ship's distance from that landmark can be calculated.

Standing or running (adjustable) wire rigging that supports the mast from the stern; a wire mast support leading aft to the deck or another mast

Wind that is deflected from it's normal course by the sails

When the wind pushes on the wrong side of the sail, causing it to be pushed away from the wind. If the lines holding the sail in place are not released, the boat could become hard to control and heel excessively.

To hold the mainsail or jib off to the side to cause the wind to blow onto the backside of the sail, used to slow a boat

Abbreviation for "Bunker Adjustment Factor." Used to compensate steamship lines for fluctuating fuel costs. Sometimes called "Fuel Adjustment Factor" or FAF.

Bunker adjustment factor

A condition where the particles (dust) becomes embedded in the fabric filter over time and are not removed by the bag cleaning process.

A fabric bag through which a gas stream is passed for the removal of particulate matter.

A dust-collection chamber containing numerous permeable fabric filters through which the exhaust gases pass. Finer particulates entrained in the exhaust gas stream are collected in the filters for subsequent treatment/disposal.

Various kinds of commodities usually packed in sacks or in bags, such as sugar, cement, milk powder, onion, grain, flour, etc.

Tassels of unraveled line, yarns, etc. which are lashed around chafe spots such as spreaders to prevent chafe on sails.

To bagpipe the mizzen, is to lay it aback by bringing the sheet to the weather mizzen rigging.

To throw water out of a boat; a yoke, as a ladder bail (rung).

To remove water from the boat by hand, bucket, pump etc.

Openings in the bottom or transom of a boat to drain water when sailing.

The degree to which all the forces on a boat are symmetrical so the vessel sails with just a slight weather helm.