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2. Weather gage - Wikipedia

   en.wikipedia.org/wiki/Weather_gage

   Conversely, a boat on an upwind course may find itself trapped in the dirty air of a boat immediately to windward. Right-of-way rules give priority to the leeward boat and can make it advantageous to be the boat without the weather gage, especially just before the start or when the boat to leeward can point higher into the wind.

3. Navigational aid - Wikipedia

   en.wikipedia.org/wiki/Navigational_aid

   The mark has the colour and shapes corresponding to the preferred channel with a band of the other colour to indicate it is the other hand mark for the subsidiary channel. [1] In IALA region A where a minor channel branches off to port the mark at the junction would be a red cylinder with a green band. The red cylinder is a port hand mark for ...

4. NMEA 2000 - Wikipedia

   en.wikipedia.org/wiki/NMEA_2000

   NMEA 2000, abbreviated to NMEA2k or N2K and standardized as IEC 61162-3, is a plug-and-play communications standard used for connecting marine sensors and display units within ships and boats. Communication runs at 250 kilobits-per-second and allows any sensor to talk to any display unit or other device compatible with NMEA 2000 protocols.

5. Ship - Wikipedia

   en.wikipedia.org/wiki/Ship

   Larger boats and ships generally have multiple decks and compartments. Separate berthings and heads are found on sailboats over about 25 feet (7.6 m). Fishing boats and cargo ships typically have one or more cargo holds. Most larger vessels have an engine room, a galley, and various compartments for work. Tanks are used to store fuel, engine ...

6. Lock (water navigation) - Wikipedia

   en.wikipedia.org/wiki/Lock_(water_navigation)

   A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.

7. Fairway (navigation) - Wikipedia

   en.wikipedia.org/wiki/Fairway_(navigation)

   The term "fairway" usually means all the navigable waters between the fairway buoys (that indicate the ends of the channel), even the routes only accessible to the lighter-draft vessels. [1] Some authors restrict the definition to the linear approach part of a marine waterway, the approach channel leading into a port.

8. Marine VHF radio - Wikipedia

   en.wikipedia.org/wiki/Marine_VHF_radio

   Channel 16 (156.8 MHz) is the international calling and distress channel. Transmission power ranges between 1 and 25 watts, giving a maximum range of up to about 60 nautical miles (111 km) between aerials mounted on tall ships and hills, and 5 nautical miles (9 km; 6 mi) between aerials mounted on small boats at sea level. [ 7 ]

9. Velocity made good - Wikipedia

   en.wikipedia.org/wiki/Velocity_made_good

   Velocity made good, or VMG, is a term used in sailing, especially in yacht racing, indicating the speed of a sailboat towards (or from) the direction of the wind. [1] [2] The concept is useful because a sailboat cannot sail directly upwind, and thus often can not, or should not, sail directly to a mark to reach it as quickly as possible.