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Abbreviations, Distances, Speeds

 

Abbreviations

Nautical Mile   NM
Statute Mile   M
Miles per Hour   Mph
Knot   kt
Kilometre   km
Kilometre per Hour   kph
Metre   m
Day   D
Hour   h
Minute   min
Second   sec or s
Universal Time Coordinated   UTC
World Sailing   WS
World Sailing Speed Record Council   WSSRC
Racing Rules of Sailing   RRS
Equipment Rules of Sailing   ERS
British Pounds   GBP
Global Positioning System   GPS
International Maritime Organisation   IMO
Maritime Safety Committee   MSC
Horizontal Position Error   hpe
World Geodetic System 84   WGS 84
WSSR Black Box   BB
Yellow Box Tracker   YB

 

The values below are listed for easy reference, and some are approximations. In the calculation of records, 1 nautical mile is exactly 1852 metres, and 1 knot is exactly 1852/3600 m/s

Distances
1 Nautical Mile = 1.852 km = 1.15069 Mile = 2025.2 Yards
500 Metres = 0.27 Nautical Mile = 0.31 Mile = 546.8 Yards

Speeds
1 Knot = 1 Nautical Mile per hour
1 kt = 1.852 kph = 1.1508 Mph = 0.51444... m/s
1 km/h = 0.5400 kt = 0.6214 Mph = 0.2777... m/s
1 Mph = 1.6093 km/h = 0.8690 kts = 0.4470 m/s

On a 500 m Speed Course
25 sec = 38.88 kts = 20.00 m/s
20 sec = 48.60 kts = 25.00 m/s
19 sec = 51.15 kts = 26.31 m/s
18 sec = 54.00 kts = 27.77 m/s
17 sec = 57.17 kts = 29.41 m/s
16 sec = 60.75 kts = 31.25 m/s
15 sec = 64.79 kts = 33.33 m/s

On a Nautical Mile Course
100 sec = 36 kts
90 sec = 40 kts
80 sec = 45 kts
70 sec = 51.4 kts
60 sec = 60 kts

Latitudes and Longitudes are given in degrees and minutes with 4 decimals

 

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