This is a description of a vessel's draught in salt water when when it arrives at a port where the water density is that of salt water, that is 1025 kilograms per cubic meter. This expression differs from "Fresh water arrival draught" (FWAD) and an intermediate water density draught, "brackish water arrival draught" (BWAD). In a charterparty the description of the vessel usually related to its draught in salt water unless it is to trade in water where the density is other that of salt water.