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Astern propulsion does not necessarily imply the ship is moving astern (in reverse); astern propulsion is used to slow a ship by applying a force in the direction of the bow of the ship, instead of the stern. The equivalent concept for an airplane is thrust reversal. In a sailing ship astern propulsion can be achieved by the appropriate ...
Astern (adjective): toward the rear of a ship (opposite of "forward"). [9] Athwartships: toward the sides of a ship. [1] Aweather: toward the weather or windward side of a ship. [10] Aweigh: just clear of the sea floor, as with an anchor. [11] Below: a lower deck of the ship. [1] Belowdecks: inside or into a ship, or down to a lower deck. [12]
No ICS meaning as single flag. Prior to 1969: "The way is off my ship; you may feel your way past me." Distance (range) in nautical miles. S Sierra: Argent, an inescutcheon azure "I am operating astern propulsion." [b] Speed (velocity) in knots T Tango: Tierced in pale gules, argent and azure "Keep clear of me." [b]
No ICS meaning as single flag. Prior to 1969: "The way is off my ship; you may feel your way past me." Distance (range) in nautical miles. S Sierra [siˈɛrə] "I am operating astern propulsion." [b] Speed (velocity) in knots T Tango [ˈtaŋ.goʊ] "Keep clear of me [b]; I am engaged in pair trawling." Local time.
Propulsion by sail generally consists of a sail hoisted on an erect mast, supported by stays, and controlled by lines made of rope. Sails were the dominant form of commercial propulsion until the late nineteenth century, and continued to be used well into the twentieth century on routes where wind was assured and coal was not available, such as ...
Slow ahead/astern, the number of revolutions is standardized for the individual ship and is unstated; Half ahead/astern, accompanied by an order for a power setting (e.g., "half ahead both engines, revolutions 1,500") Full speed ahead/astern. This is reserved for emergencies and as such the word "speed" is included to distinguish it from the ...
The sides of a ship. To describe a ship as "on her beam ends" may mean the vessel is literally on her side and possibly about to capsize; more often, the phrase means the vessel is listing 45 degrees or more. beam reach Sailing with the wind coming across the vessel's beam. This is normally the fastest point of sail for a fore-and-aft-rigged ...
A 17th-century sailing vessel commonly seen in the Mediterranean, similar to a xebec with two or three masts; two-masted polaccas were known as brig-polaccas and three-masted polaccas as ship-polaccas or polacca-settees. Polacca-settees had a lateen sail on the foremast, a European-style square rig on the mainmast, and a gaff or lateen on the ...