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  2. Navigation light - Wikipedia

    en.wikipedia.org/wiki/Navigation_light

    Watercraft navigation lights must permit other vessels to determine the type and relative angle of a vessel, and thus decide if there is a danger of collision. In general, sailing vessels are required to carry a green light that shines from dead ahead to 2 points (22 + 1 ⁄ 2 °) abaft [note 1] the beam on the starboard side (the right side from the perspective of someone on board facing ...

  3. Title 33 of the Code of Federal Regulations - Wikipedia

    en.wikipedia.org/wiki/Title_33_of_the_Code_of...

    United States Coast Guard Reserve 13 Decorations, medals, ribbons and similar devices 17 United States Coast Guard general gift fund 19 Waivers of navigation and vessel inspection laws and regulations 20 Rules of practice, procedure, and evidence for formal administrative proceedings of the Coast Guard 23

  4. Day shapes - Wikipedia

    en.wikipedia.org/wiki/Day_shapes

    The appropriate lights may also be displayed during the day at times of restricted visibility or other necessary circumstances. [3] Vessels under 7 meters are generally not required to display day shapes even if they are required to display lights at night. [4] A square black flag displayed over the ball may be used as a distress signal. [5]

  5. International Regulations for Preventing Collisions at Sea

    en.wikipedia.org/wiki/International_Regulations...

    The International Regulations for Preventing Collisions at Sea 1972, also known as Collision Regulations (COLREGs), are published by the International Maritime Organization (IMO) and set out, among other things, the "rules of the road" or navigation rules to be followed by ships and other vessels at sea to prevent collisions between two or more vessels.

  6. Nautical publications - Wikipedia

    en.wikipedia.org/wiki/Nautical_publications

    The book is usually referred to as the List of Lights, and should not be confused with the U.S. Coast Guard's Light List. The List of Lights is published in seven volumes, as Publication numbers 110 through 116. Each volume contains lights and other aids to navigation that are maintained by or under the authority of other governments.

  7. Leading lights - Wikipedia

    en.wikipedia.org/wiki/Leading_lights

    Leading lights, also known as range lights in the United States, are a pair of light beacons used in navigation [2] to indicate a safe passage for vessels entering a shallow or dangerous channel; they may also be used for position fixing. At night, the lights are a form of leading line that can be used for safe navigation. The beacons consist ...

  8. International Association of Marine Aids to Navigation and ...

    en.wikipedia.org/wiki/International_Association...

    Its future achievement is likely to be the implementation of the e-navigation. e-navigation does not aim at ships being electronically operated but gathering and displaying all navigation information through connected sources of information and harmonized data exchange. IALA is based near Paris in Saint-Germain-en-Laye, France.

  9. Electronic navigational chart - Wikipedia

    en.wikipedia.org/wiki/Electronic_navigational_chart

    An Electronic Navigational Chart (ENC) is a digital representation of a real-world geographical area for the purpose of Marine navigation.Real-world objects and areas of navigational significance, or to a lesser degree - informational significance, are portrayed through Raster facsimiles of traditional paper charts; or more commonly through vector images, which are able to scale their relative ...