API gravity. In the oil industry influenced by the United States the “American Petroleum Institute” scale of mass/volume is used.
Aground. The bottom of the ship may touch the ground in a loading or discharging port because of tidal changes in the water level. If a charter allows the Charterer to send the ship to a port where it can safely touch the ground it will contain a clause describing the ship as being ". . . not always afloat but safely aground . . ." (NAABSA)
All told. In some charterparties the deadweight capacity of the vessel is shown with the addition "all told" (DWAT), which means the capacity mentioned in the charterparty represents the total deadweight capacity including bunkers, water, provisions, dunnage, stores, spare parts, crew, passengers and their effects. In order to arrive at the deadweight capacity for cargo (DWCC) deductions have to be made for bunkers, water, etc.
Apparel. The cargo capacity may be defined in a charterparty as follows:
“... tons, not exceeding what she can reasonably stow and carry in addition to her tackle, apparel, provisions, bunkers and furniture.”
The word “apparel” relates to the equipment of the vessel such as anchors, chains, lifeboats, etc.