The Arctic magnetic pole does not move anymore. It runs, faster and faster. In recent years, even faster than expected. Therefore, geo-researchers have now had an unscheduled change to their world model and adjust their calculations, so that navigation with compass and other navigation aids such as a Pilot Plug, used by pilots around the world, continue to work.
Manoeuvring large ships at close quarters and on shallow water is one of the most difficult aspects of shiphandling because of the complex hydraulic interactions depending on the ships' speeds, on the water depth and on lateral restrictions like in canals. Training is conducted both on meeting and on overtaking ships in shallow waters. This video shows how overtaking in a canal can easily fail.
More information: http://www.portrevel.com/3781-shiphan...
Safehaven Marine undertook an 800nm 4 day cruise in Thunder Child II to Scotland, living off the boat to visit a place called the Gulf of Corryvreckan. A pretty wild yet beautiful place. The Corryvreckan whirlpool, or ‘Maelstrom’, as would be a more appropriate description, is formed as the tide enters the narrow stretch of water between the Islands of Jura and Scarba that is the Gulf of Corryvreckan. Here the tidal flow speeds up to 8.5kts as it is squeezed between the islands, and there...
Pilot cutters are used to take pilots between the three pilot stations (at Gravesend, Harwich and Ramsgate) and ships entering or leaving the Port of London.
Three dedicated pilot cutters Patrol, Guide and our hybrid Leader are based at Gravesend. The six cutters used at Ramsgate are operated by a Estuary Services Limited, which is jointly owned by the PLA and Medway Ports Ltd.
