Navigational Charts

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• Trick: In maritime context, a trick refers to a period of duty on board a ship, usually lasting four hours. The crew is divided into teams, or watches, who take turns working for a certain number of hours before being relieved by the next watch. T ... Read More >>
• Sirens: In maritime context, Sirens refer to the loud, high-pitched warning signals used on ships to alert crew members of potential danger or to communicate with other vessels. Sirens are typically powered by compressed air or electricity and emit ... Read More >>
• Fender: In maritime context, a fender is a cushioning device used to prevent damage to boats, ships, or other vessels when they come in contact with each other or with a dock or pier. Fenders are typically made of rubber, foam, or plastic and are a ... Read More >>