To leave a ship without authority (deserting). … [Read more...]
Jolly Roger
A pirate's flag carrying the skull and crossbones. … [Read more...]
Joint rescue coordination centre (JRCC)
A rescue co-ordination centre responsible for both aeronautical and maritime search and rescue incidents. … [Read more...]
Jetty
A landing wharf or pier; a dike at a river's mouth. … [Read more...]
Jettison
The act of throwing goods or pumping cargo overboard to lighten a ship to improve stability in an emergency. … [Read more...]
JASREP
A vessel position-reporting system similar to AMVER, but operated by the Japanese Authorities … [Read more...]
Jacob’s ladder
Earlier A rope ladder with wooden rounds used for getting on or off a vessel not at a berth by pilots. After specific requirements for pilot ladder became mandatory these ladders are not used by pilots, but by ship's crew on rare cases. … [Read more...]
Jumbo Derrick
colloquial term to describe a conventional heavy-lift derrick. … [Read more...]