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2. Navigational instrument - Wikipedia

   en.wikipedia.org/wiki/Navigational_instrument

   Marine chronometer used to determine time at the prime meridian with great precision which is necessary when reducing sights in celestial navigation. Nocturnal used to determine apparent local time by viewing the Polaris and its surrounding stars. Ring dial or astronomical ring used to measure the height of a celestial body above the horizon ...

3. Marine electronics - Wikipedia

   en.wikipedia.org/wiki/Marine_electronics

   In recent years, the International Electrotechnical Commission (IEC) has created a new standards suite for "Digital interfaces for navigational equipment within a ship". This is known as IEC 61162 and included NMEA 0183, NMEA 2000 and LWE. Additionally, different suppliers of marine electronics have their own communications protocol.

4. Automatic radar plotting aid - Wikipedia

   en.wikipedia.org/wiki/Automatic_radar_plotting_aid

   A typical shipboard ARPA/radar system. A marine radar with automatic radar plotting aid (ARPA) capability can create tracks using radar contacts. [1] [2] The system can calculate the tracked object's course, speed and closest point of approach [3] (CPA), thereby knowing if there is a danger of collision with the other ship or landmass.

5. Category:Navigational equipment - Wikipedia

   en.wikipedia.org/.../Category:Navigational_equipment

   Pages in category "Navigational equipment" The following 155 pages are in this category, out of 155 total. ... Marine sandglass; Marine VHF radio; Mariner's astrolabe;

6. Navigational aid - Wikipedia

   en.wikipedia.org/wiki/Navigational_aid

   A navigational aid (NAVAID), also known as aid to navigation (ATON), is any sort of signal, markers or guidance equipment which aids the traveler in navigation, usually nautical or aviation travel. Common types of such aids include lighthouses , buoys , fog signals , and day beacons .

7. Automatic identification system - Wikipedia

   en.wikipedia.org/wiki/Automatic_identification...

   AIS transceivers automatically broadcast information, such as their position, speed, and navigational status, at regular intervals via a VHF transmitter built into the transceiver. The information originates from the ship's navigational sensors, typically its global navigation satellite system (GNSS) receiver and gyrocompass. Other information ...