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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.
A US Navy crewman signals the letter 'U' using flag semaphore during an underway replenishment exercise (2005). Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and - φέρω (-phero) '-bearer' [1]) is a semaphore system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands.
Boat building. Boat building is the design and construction of boats (instead of the larger ships) — and their on-board systems. This includes at minimum the construction of a hull, with any necessary propulsion, mechanical, navigation, safety and other service systems as the craft requires. [1]
One or more flags form a code word whose meaning can be looked up in a code book held by both parties. An example is the Popham numeric code used at the Battle of Trafalgar . In yacht racing and dinghy racing , flags have other meanings; for example, the P flag is used as the "preparatory" flag to indicate an imminent start, and the S flag ...
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.
Pirogue. Group of pirogues at sunset on the river bank of Don Tati, Si Phan Don, Laos. A pirogue (/ pɪˈroʊɡ / or / ˈpiːroʊɡ /), [1] also called a piragua or piraga, is any of various small boats, particularly dugouts and native canoes. The word is French and is derived from Spanish piragua [piˈɾaɣwa], which comes from the Carib piraua.
Traditional fishing boats are usually characteristic of the stretch of coast along which they operate. They evolve over time to meet the local conditions, such as the materials available locally for boat building, the type of sea conditions the boats will encounter, and the demands of the local fisheries. These fishing boats in Gambia conform ...
Polynesian navigation. Polynesian navigation or Polynesian wayfinding was used for thousands of years to enable long voyages across thousands of kilometres of the open Pacific Ocean. Polynesians made contact with nearly every island within the vast Polynesian Triangle, using outrigger canoes or double-hulled canoes.
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