TO CALCULATE TRUE WIND DIRECTION & SPEED
SHIP'S HEADING 95.0 deg
SHIP'S SPEED 12.5 kts
RELATIVE WIND DIRECTION 10.0 deg P or S :
RELATIVE WIND SPEED 28.0 kts
TRUE WIND DIRECTION 112.9 deg East South East
TRUE WIND SPEED 15.8 kts 8.1
SEA STATE 3 - Slight
BEAUFORT SCALE 4 - Moderate Breeze
APPROX SWELL HT 1.0
ver 2.2 by 2/O DARREN D'SOUZA
S
East South East
m/s
Boxing of compass
Direction Symbol Degrees
North N 0(360)
North by east N by E 11.25
North-northeast NNE 22.5
Northeast by north NE by N 33.75
Northeast NE 45
Northeast by east NE by E 56.25
East-northeast ENE 67.5
East by north E by N 78.75
East E 90
East by south E by S 101.25
East-southeast ESE 112.5
Southeast by east SE by E 123.75
Southeast SE 135
Southeast by south SE by S 146.25
South-southeast SSE 157.5
South by east S by E 168.75
South S 180
South by west S by W 191.25
South-southwest SSW 202.5
Southwest by south SW by S 213.75
Southwest SW 225 225
Southwest by west SW by W 236.25
West-southwest WSW 247.5
West by south W by S 258.75
West W 270
West by north W by N 281.25
West-northwest WNW 292.5
Northwest by west NW by W 303.75
Northwest NW 315
Northwest by north NW by N 326.25
North-northwest NNW 337.5
North by west N by W 348.75
ALLOWABLE WIND FORCE AT MOORINGS
( GAS BAUHINIA )
SR.NO. ITEM UNITS METHOD RESULT
1 Draught Forward m df 10
2 Draught Aft m da 11
3 Mean Draught m df + da / 2 10.5
4 Total Lateral Area of Ship m2 A' 5450
5 Lateral Area Under Waterline m2 No 3 x LBP 2266
6 Lateral Area Above Waterline m2 A' - No 5 3184
7 Breaking Stress of Steel Ropes tons Tso 64.6
8 Breaking Stress of Nylon Ropes tons Tno 70.6
9 Number of Steel Ropes Ns 16
10 Number of Nylon Ropes Nn 2
11 Tensile Stength of Steel Ropes ton/m No 7 x No 9 1033.6
12 Tensile Stength of Nylon Ropes ton/m No 8 x No 10 141.2
13 Allowable Wind Velocity m/s 31.0
14 Allowable Wind Velocity kts 60.2
ALLOWABLE WIND FORCE AT MOORINGS
( GENERAL )
Draught Forward m 10.25 Mean Draught
Draught Aft m 10.50 10.375
Total Lateral Area of Ship m2 5450 Lateral Area Above Waterline
Lateral Area Under Waterline m2 2239 3211
Diameter of Steel Ropes mm 36 10.4 SWL'S
Diameter of Nylon Ropes mm 65 14.1 SWL'S
Number of Steel Ropes 16
Number of Nylon Ropes 2
Inscribed Angle Of Moorings 30
Allowable Wind Velocity m/s 22.4 43.6 kts
