(1) To tip the boat over so that the boat is upside down with the mast pointing down to the sea bottom. (2) A bag in which a spinnaker or other large sail can be stowed with the lines attached so that it can be rapidly raised.

A method of storing a sail, e.g., by rolling the jib around the headstay.

An additional extra tax.

A region near the earth in which the relative velocity increases from zero with elevation, due to the motion of the atmosphere relative to the earth's surface.

A navigational instrument used to measure the altitude of celestial bodies

A position based on estimations of a boat's position using estimated speed, currents, and the last known position/fix - of the boat.

First attempt at best offer that can be matched

The region around the equator between the Tropic of Cancer and the Tropic of Capricorn. The tropics are known for their warm weather.

To search for a sunken object by towing a grapnel along bottom.

A platform and protective coaming setting high up on a mast, to accommodate the look-out aloft while the ship is at sea.

The bow and forward part of the vessel above the waterline.

The tall, narrow, waterproof box that houses a vessel's centerboard and allows it to be retracted into the ship's hull.

A line connecting points of equal magnetic variation on a map.

To assist or help.

An air operated device for hoisting or pulling. Similar to a slusher or winch

A spring loaded pressure relief valve actuated by the static pressure upstream of the valve. The valve opens normally in proportion to the pressure increase over the opening pressure.

Is one in which there is no liquid injection and/or liquid circulation for evaporative cooling or sealing.

Notations made when the cargo is received at the carrier's terminal or loaded aboard a vessel. They show any irregularities in packaging or actual or suspected damage to the cargo. Exceptions are then noted on the bill of lading.

Jail

Transverse or longitudinal partitions separating portions of the ship ("walls" in a ship).