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Day shapes from ColRegs. Day shapes are black in color and their sizes are determined by the ColRegs; for example, the size of the ball is not less than 0.6 metres (2.0 ft). The vertical distance between shapes is at least 1.5 metres (4.9 ft). Vessels of less than 20 metres (66 ft) length may use shapes of smaller size commensurate with the ...
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.
This page was last edited on 1 April 2004, at 08:24 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Two sailing ships dressed overall with their signal flags. International maritime signal flags are various flags used to communicate with ships. The principal system of flags and associated codes is the International Code of Signals. [1]
Diagram of cardinal marks as seen during the day, with their light patterns. The lights shown here are configured as "Quick". A cardinal mark is a sea mark (a buoy or other floating or fixed structure) commonly used in maritime pilotage to indicate the position of a hazard and the direction of safe water.
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 ...
The word is also used in a more specific, technical sense to refer to a signboard or daytime identifier that is attached to a day beacon or other aid to navigation. [2] In that sense, a daymark conveys to the mariner during daylight hours the same significance as the aid's light or reflector does at night. [ 3 ]
Date (The first 2 digits denote the day; the next 2 digits denote the month; and 2 other digits to denote the last two digits of the year if necessary. Utilizes leading zeroes for single-digit values.) E Echo [ˈɛk.oʊ] "I am altering my course to starboard." [b] F Foxtrot [ˈfɔks.trɔt] "I am disabled; communicate with me." G Golf [gɔlf] "I ...