The editors of Professional Mariner have presented the Plimsoll Awards for 2004 to Capt. Douglas J. Grubbs of the Crescent River Port Pilots' Association and to the U.S. Coast Guard's Research and Development Center in Groton, Conn. Grubbs and the…
It's one of the most revolutionary developments in marine navigation: the universal automatic identification system (AIS). The transponder broadcasts a broad range of information about a ship on VHF marine radio, including its position, speed, direction, cargo, classification and destination.…
The Automatic Identification System (AIS) was originally conceived as a safety and navigation aid for ships at sea. Mandated by the International Maritime Organization (IMO), and implemented and enforced by member states, AIS provides information otherwise unavailable to a crew.…
The search for oil and gas has been a driving force in the development of dynamic positioning systems. Drill rigs, for obvious reasons, must maintain a fixed position above the ocean floor. As rigs moved off the continental shelf into…
