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  2. Course (navigation) - Wikipedia

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

    The course is to be distinguished from the heading, which is the direction where the watercraft's bow or the aircraft's nose is pointed. [1] [2] [3] [page needed] The path that a vessel follows is called a track or, in the case of aircraft, ground track (also known as course made good or course over the ground). [1] The intended track is a route.

  3. Ship motions - Wikipedia

    en.wikipedia.org/wiki/Ship_motions

    An offset or deviation from normal on this axis is referred to as list or heel. Heel refers to an offset that is intentional or expected, as caused by wind pressure on sails, turning, or other crew actions. The rolling motion towards a steady state (or list) angle due to the ship's own weight distribution is referred in marine engineering as list.

  4. Heading (navigation) - Wikipedia

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

    True course is 120°, the Variation is 5° East and the Deviation is 1° East. T: 120° V: −5° M: 115° D: −1° C: 114° True course is 035°, the Variation is 4° West and the Deviation is 1° East. T: 035° V: +4° M: 039° D: −1° C: 038° True course is 306°, the Variation is 4° East and the Deviation is 11° West. T: 306° V: −4 ...

  5. Passage planning - Wikipedia

    en.wikipedia.org/wiki/Passage_planning

    The third stage of passage planning is the execution stage. The IMO was careful to include execution as part of the process of passage planning. This underscores the fact that the Guidelines list a number of tasks that are to executed during the course of the voyage. It also reiterates the captain's responsibility to treat the plan as a "living ...

  6. Glossary of nautical terms (A–L) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_nautical_terms...

    binnacle list A ship's sick list. The list of men unable to report for duty was given to the officer or mate of the watch by the ship's surgeon. The list was kept at the binnacle. bird farm United States Navy slang for an aircraft carrier. bite Verb used in reference to a rudder, as in "the rudder begins to bite". When a vessel has steerageway ...

  7. Man overboard rescue turn - Wikipedia

    en.wikipedia.org/wiki/Man_overboard_rescue_turn

    The Williamson turn is an alternative manoeuvre used to bring a ship or boat under power back to a point it previously passed through, often for the purpose of recovering a casualty at sea. [ 1 ] [ 3 ] It was named for John Williamson, USNR , who used it in 1943 to recover a man who had fallen overboard.

  8. Set and drift - Wikipedia

    en.wikipedia.org/wiki/Set_and_drift

    Step 4. Plot out desired course of 166 degrees true on Radar Plotting Sheet; Step 5. Measure length of course by using speed of 8.8 knots and converting into nautical miles via the time, speed, and distance scale; Step 6. Connect the two ends of the vectors from the current course to the course made good. Thus creating your set and drift vector ...

  9. Error analysis for the Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Error_analysis_for_the...

    This encrypts the P-code so that it cannot be mimicked by a transmitter sending false information. Few civilian receivers have ever used the P-code, and the accuracy attainable with the public C/A code was much better than originally expected (especially with DGPS ), so much so that the antispoof policy has relatively little effect on most ...