Boycott clause. A charterer may insist that a charterparty contains a clause, which causes the shipowner to take the risks if the vessel is delayed by a "boycott" by labour.
Blockade. Belligerent powers have the right of blockade, i.e., the right to blockade enemy ports or coastal territory for ocean shipping by military measures.
The blockade must be respected by neutral states. Running a blockade, if unsuccessful, may entail boarding and searching for contraband and confiscation of ship and cargo.
BALTIME. A Uniform standard form time charter published by BIMCO. In 1974 another edition included a box type format for main details and descriptive text for the clauses. BALTIME generally favours the shipowners' side and contrasts the NYPE, the New York Produce Exchange Form of time charter, which tends to favour the charterer's side.
Black list. Because oil tankers frequently load oil from Islamic countries these countries may place certain ports on a "black list" such as Israeli or South African ports, and if tankers are known to have called at ports in those countries, the tankers' names are on this black list and the ship can be boycotted and refused entry or cargo.
Below bridges (BB). This term can be Found in instructions from port and charterers' agents to the ship to ensure that the ship is kept at the appropriate draft in order to ensure that it will have sufficient clearance above its highest point to pass safely below bridges (or overhead obstructions such as power cables) across a canal, channel or river in the approaches to a berth or port. To ensure the ship's clearance below bridges would be the shipowner's obligation.