1. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450599590 70185 02124 Click on highlighted numbers to advance to next slide

2. 4YISHIPCall Sign 9959099L a L a L a 99 = Ship report indicator L a L a L a = Latitude in degrees and tenths, 590 = 59.0  70185Q c L o L o L o L o Q c = Quadrant of globe, 7 = Northern hemisphere, west of longitude zero L o L o L o L o = Longitude in degrees and tenths, 0185 = 18.5  02124YYGGi w YY = Day of month, 02 = 2nd GG = Hour (GMT), 12 = 1200 i w = Wind speed indicator, 4 = in knots measured by anemometer 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 04505 82915

3. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450597205 82915NddffN = Total cloud cover, 8 = 8/8ths dd = wind direction, 29 = 290  ff = wind speed, 15 = 15 knots

4. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450514309 97205VVwwWVV = Visibility, 97 = 10 to 20 km ww = Present weather, 20 = drizzle in past hour W = Past weather, 5 = drizzle 97

5. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 04505884// 97 14309PPPTTPPP = MSL Pressure, 143 = 1014.3 mbs TT = Air temperature, 09 = 9  C 09143

6. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450500305 97 09143 884//N h C l hC m C h N h = Low cloud cover, 8 = 8/8ths C l = Low cloud type, 8 = Cumulus and Strato-Cumulus h = Low cloud base, 4 = 1000 to 2000 feet C m = Medium cloud type, / = Not observable C h = High cloud type, / = Not observable 8/4

7. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450582817 88632 97 09143 8/4 00305D s V s appD s V s = Direction and speed of vessel in past three hours, 00 = Stationary a = pressure tendency, 3 = falling then rising – higher than previously pp = pressure change, 05 = 0.5 mbs 05

8. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450505207 97 09143 8/32 2/17 05 82817(8N s Ch s h s )8 = Indicator N s = Amount of cloud, 2 = 2/8ths C = Cloud type, 8 = Cumulus h s h s = Cloud base, 17 = 1700 feet 88632(8N s Ch s h s )8 = Indicator N s = Amount of cloud, 8 = 8/8ths C = Cloud type, 6 = Strato-Cumulus h s h s = Cloud base, 32 = 3200 feet

9. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450511024 97 09143 8/32 2/17 05 07 05207(0T s T s T d T d )0 = Indicator T s T s = Difference between air and sea temperature in ½  C, 50 added if sea temperature is higher than air temperature, 52 = sea temperature 10  C T d T d = Dew point, 07 = 7  C 10

10. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 0450530504 04505 97 09.4143 8/32 2/17 05 07 10.2 11024(1T w T w T w T t )1 = Indicator T w T w T w = Sea temperature in degrees and tenths, 102 = 10.2  C T t = tenths of  C to be added to air temperature (TT), 4 = 0.4  C

11. 4YI 99590 70185 02124 82915 97205 14309 884// 00305 82817 88632 05207 11024 30504 04505 ENDEND 97 09.4143 8/32 2/17 05 07 10.2 30504(3P w P w H w H w )3 = Indicator P w P w = Period of waves in seconds, 05 = 5 seconds H w H w = Height of waves in ½ metres, 04 = 2 metres 04505(d w d w p w h w h w )d w d w = Direction from which swell is coming, 04 = 040  p w = Period of swell in seconds, 5 = 5 seconds h w h w = Height of swell in ½ metres, 5 = 2½ metres 0504 5/05

12. Compiled by, with the generous assistance of AWC and others by 2xislesphotography 2xislescomputing ©