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in nine languages. The International Code of Signals (INTERCO) is an international system of signals and codes for use by vessels to communicate important messages regarding safety of navigation and related matters. Signals can be sent by flaghoist, signal lamp ("blinker"), flag semaphore, radiotelegraphy, and radiotelephony.
Most sign languages combine hand shapes, movement, and position in relation to the rest of body, as well as additional body language and facial expression. As with other hand signs, the OK gesture may be combined with other elements to convey numerous meanings across multiple sign languages.
In more recent history, it is sometimes associated with the racist theory of white power, which started as a prank meme on 4chan. In Japanese culture a way of requesting money or payment uses a similar hand sign, with the palm facing upwards and the three extended fingers level. Abhayamudra is a Hindu mudra or gesture of reassurance and safety.
The hand signal "OK". Diver communications are the methods used by divers to communicate with each other or with surface members of the dive team. In professional diving, diver communication is usually between a single working diver and the diving supervisor at the surface control point. This is considered important both for managing the diving ...
A safe water mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate the end of a channel. They usually imply that open, deep and safe water lies ahead. They are also used to indicate the start and end of a buoyed section of a continuous narrow channel; and a series of ...
A blue and white flag (the flag for the letter P) hoisted at the foretrucks of ships about to sail. Formerly a white ship on a blue ground, but later a white square on a blue ground. blue water 1. That part of the ocean lying more than a few hundred nautical mile s from shore, and thus beyond the outer boundary of green water. 2.
Modern anchors for smaller vessels have metal flukes that hook on to rocks on the bottom or bury themselves in soft seabed. The vessel is attached to the anchor by the rode (also called a cable or a warp). It can be made of rope, chain or a combination of rope and chain. The ratio of the length of rode to the water depth is known as the scope ...
The "shaka" sign. The shaka sign, sometimes known as "hang loose" is a gesture with friendly intent often associated with Hawaii and surf culture.It consists of extending the thumb and smallest finger while holding the three middle fingers curled, and gesturing in salutation while presenting the front or back of the hand; the wrist may be rotated back and forth for emphasis.