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< 1 knot < 1 mph < 1 km/h 0–0.2 m/s: 0 ft 0 m Sea like a mirror Smoke rises vertically 1 Light air 1–3 knots 1–3 mph 1–5 km/h 0.3–1.5 m/s 0–1 ft 0–0.3 m Ripples with appearance of scales are formed, without foam crests Direction shown by smoke drift but not by wind vanes 2 Light breeze 4–6 knots 4–7 mph 6–11 km/h
The knot (/ n ɒ t /) is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h (approximately 1.151 mph or 0.514 m/s). [ 1 ] [ 2 ] The ISO standard symbol for the knot is kn . [ 3 ]
The 90 knots (170 km/h; 46 m/s; 100 mph) definition is very non-standard. A common alternative definition of the maximum is 55 knots (102 km/h; 63 mph; 28 m/s). [2] The most common way of describing wind force is with the Beaufort scale [3] that defines a gale as wind from 50 kilometres per hour (14 m/s) to 102 kilometres per hour (28 m/s). It ...
On 24 November 2012 he sailed the Vestas Sailrocket 2 at 65.45 knots in Walvis Bay, Namibia. [1] Nautical mile record is held by Paul Larsen. On 18 November 2012 he sailed the Vestas Sailrocket 2 at 55.32 knots in Walvis Bay, Namibia. [2] 24 Hour distance record is held by Pascal Bidégorry.
1 knot (nautical mile per hour) 10 0: 1.2: 4.32: ... sailfish—fastest fish; speed of go-fast boat. 40: 140: 90: 1.3 ... 1.55 × 10 −6: Speed of ...
is the hull speed of the vessel in knots If the length of waterline is given in metres and desired hull speed in knots, the coefficient is 2.43 kn·m −½ . The constant may be given as 1.34 to 1.51 knot·ft −½ in imperial units (depending on the source), or 4.50 to 5.07 km·h −1 ·m −½ in metric units, or 1.25 to 1.41 m·s −1 ·m ...
29.81 knots (55.21 km/h) 3d 15h 25min 48s Banque Populaire V (fastest multihull)
Douglas also became the world's third over-50 knots sailor, when on 8 September he made a 50.54 knots (93.60 km/h) run. [11] The current speed record over a 500 meter (1,640 ft) course for a kiteboard, officially ratified by the World Sailing Speed Record Council, is 55.65 kn, held by Robert Douglas, and set in Luderitz, Namibia in October 2010 ...