HHDWS (Heavy handy deadweight scrap). This is a type of scrap-metal cargo usually originating from the U.S.A.

Horsepower (hp). The power developed by engines was expressed in “brake horse power”. Power is now measured in watts (W). The multiple for ships’ engines is in kilowatts (kW). 1 kW = 1.34 hp.

Holiday. When cargo operations are suspended on a day that is usually used for public rest and/or recreation the charterparty clause normally makes it clear whether laytime is to count or not.

Hull insurance. The hull insurance policy usually covers the hull, machinery, and complete equipment.

High cube. Normally, with break bulk or bulk cargo, this expression meant that the ratio of volume to weight of the goods was high.