Bulbous bow (BB). The shape of the foremost portion of the ship, the bow, in the form of a rounded bulb instead of the traditional V shape, in order to reduce hull resistance and its effect on speed in the water.
Broker. In the context of chartering, the most common "broker" is a "shipbroker". In general, in shipping, a broker is a person who acts as a "middleman" between two parties and negotiates the terms of a contract into which the two parties enter. The broker acts as an agent and usually represents only one of the parties, negotiating with the other party directly or with another broker representing the other side. In addition to a shipbrokerwho can be an owner's broker or a charterer's agent negotiating a charter.
Breakdown clause. Time charterparties contain a clause providing that if the ship is unavailable for the charterer's use because there is loss of time as a result of "...breakdown or damages to hull, machinery or equipment..." (among other causes) payment of the hire money to the shipowner ceases for all or some of the time lost.
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.
Cancelling date (Laycan). This is an abbreviation for the "Laydays and Cancelling" clause in a charterparty. This clause establishes the earliest date, when the ship is required by the charterer, (e.g. "Laytime for loading shall not commence before . . .") and the latest date for the commencement of the charter (e.g. “ . . . and should the vessel's Notice of Readiness not be given before . . . ") when the charterers have the option of cancelling the charter.