A canvas canopy secured over the ship's deck as a protection from the weather (covering).

Always within Institute Warranties Limits (Insurance purpose).

A compressor belonging to the group of dynamic compressors. Characterized by having its flow in the axial direction.

Ramp fitted to a RoRo ship situated at the rear of the ship.

Yes. "Aye aye sir" is a reply on board ship on receipt of an order.

The reply to an officer's order signifying that he is understood and will be obeyed (I understand).

The bearing of a celestial body from an observer's position.

[meaning]

Barrels per day (measure of petroleum production).

Bill of Lading

Abbreviation for "Bill of Lading."

Breathing air

The unfortunate man who was assigned to remain on deck to watch over the ship's safety while the ship was in harbor, and the rest of the crew were off duty.

Secondary forestay supporting the leading edge of the mast and used to flatten the mainsail in building winds.

The wind shifts in a counterclockwise direction in the northern hemisphere and clockwise in the southern hemisphere (opposite of VEER); the wind is said to back when it changes contrary to its normal pattern.

To back an anchor, is to carry out a smaller one ahead of the one by which the vessel rides, to take off some of the strain. To back a sail, is throw it aback. To back and fill, is alternately to back and fill the sails.

Resistance to air flow; usually stated in inches H2O or PSI.

The owners of a ship are entitled to payment as freight for merchandise returned through the fault of either the consignees or the consignors. Such payment, which is over and above the normal freight, is called backfreight.

To haul a shipment back over part of a route it has traveled.

A deviation to move cargo on the return leg of a voyage for the purpose of minimizing ballast mileage and thereby reducing transportation costs.