Suez Canal tonnage. The main purpose of the special measurement system is to establish criteria which determine the owner’s liability to pay Suez Canal tolls.
SSW. This is an abbreviation for "Summer Salt Water" and refers to the draught of the ship when it is loaded to its summer load line in salt water, that is, in the open sea. The summer draught is the maximum draught to which the ship can be loaded depending on the "freeboards" and "loadlines" assigned to it by the assigning authorities.
Short form of bill of lading. These bills of lading are issued by shipping companies or agents, that is, carriers, and indicate that some or all the terms and conditions of the document which is evidence of the contract of carnage can be found in another document, the “long form of bill of lading”. This latter may be obtainable on request or can be inspected at the office of the carrier or agent.
Sub-letting. It is customary to stipulate in a time or voyage charterparty that charterers have the right of sub-letting the whole or part of the vessel on the understanding, however, that they remain responsible to the shipowners for the due fulfilment of the original charterparty. In the case of a voyage charterparty, sub-letting will probably take the form of booking other cargo by charterers.