Leeway Table



The formula that is used in the calculation = (wind speed * weight) + factor with the answer given in Knots



Casualty drift speed and direction due to WIND

Casualty Type

Weight

Factor

Divergence


Person in water, state unknown

0.011

0.070

30


Person in water, Vertical

0.005

0.070

18


Person in water, Sitting

0.012

0.000

18


Person in water, Horizontal, Life jacket/survival suit

0.014

0.100

30


Person in water, Horizontal, wet suit/scuba suit

0.007

0.080

30


Person in water, Horizontal, deceased

0.015

0.080

30


Life raft, no ballast, unknown canopy and drogue

0.042

0.030

28


Life raft ,no ballast, no canopy, no drogue

0.057

0.210

24


Life raft , no ballast - no canopy, with drogue

0.044

-0.200

28


Life raft, no ballast ,with canopy, no drogue

0.037

0.110

24


Life raft, no ballast, with canopy, with drogue

0.030

0.000

28


Life raft, Shallow ballast system, drogue unknown

0.029

0.000

22


Life raft, Shallow ballast system, no drogue

0.032

-0.020

22


Life raft, Shallow ballast system, with drogue

0.025

0.010

22


Life raft, Shallow ballast system, capsized

0.017

-0.100

8


Life raft, Deep ballast system, with canopy

0.030

0.015

20


Life raft, totally enclosed capsule

0.038

0.080

22


Maritime Life Raft, 4-6 person, deep ballast, with canopy

0.029

0.04

15


Maritime Life Raft, 4-6 person, deep ballast, with canopy, no drogue

0.038

-0.04

15


Maritime Life Raft, 4-6 person, deep ballast, with canopy, no drogue, light load

0.038

-0.04

15


Maritime Life Raft, 4-6 person, deep ballast, with canopy, no drogue, heavy load

0.036

-0.03

15


Maritime Life Raft, 4-6 person, deep ballast, with canopy, with drogue

0.018

0.03

12


Maritime Life Raft, 4-6 person, deep ballast, with canopy, with drogue, light load

0.016

0.05

24


Maritime Life Raft, 4-6 person, deep ballast, with canopy, with drogue, heavy load

0.021

0.00

20


Maritime Life Raft, 15-25 person, deep ballast, with canopy

0.036

-0.09

10


Maritime Life Raft, 15-25 person, deep ballast, with canopy, no drogue, light load

0.039

-0.06

9


Maritime Life Raft, 15-25 person, deep ballast, with canopy, with drogue, heavy load

0.031

-0.07

9


Maritime Life Raft, capsized

0.009

0.00

12


Maritime Life Raft, swamped

0.010

-0.04

8


Survival Craft, Life Capsule

0.038

-0.080

22


Survival Craft, USCG Sea Rescue Kit

0.025

-0.040

7


Aviation Life Raft, 4-6 person, no ballast, with canopy, no drogue

0.037

0.110

24


Aviation Life Raft, 46 person

0.028

-0.010

15


Kayak, with person

0.042

0

19


Kayak, without person

0.047

0

13


Surf Board, with person

0.020

0.000

15


Surf Board, without person

0.049

0

15


SUP with person

0.027

0

26


SUP without person

0.049

0

15


Windsurfer, with person, mast and sail in water

0.023

0.100

12


Canoe, open; with person

0.097

0

27


Canoe, open; without person

0.147

0

16


Sailing vessel, mono hull, full keel, deep draft

0.030

0.000

48


Sailing vessel, mono hull, fin keel, shoal draft

0.040

0.000

48


Raft Homemade (2 inner tubes with frame), no sail

0.020

0.160

15


Raft Homemade (2 inner tubes with frame), with sail

0.070

-0.150

35


Power vessel, outboard, no drogue

0.070

0.040

20


Power vessel, 4.5m - 8.5m, V hull

0.070

-0.100

20


Power vessel, 5m - 30m, with centre console or walk-around cabin

0.060

-0.100

20


Power vessel, centre console, open cockpit

0.060

-0.090

22


Power vessel, flat bottom, Boston whaler

0.034

0.040

22


Power vessel, V-Hull

0.030

0.080

15


Power vessel, V-hull, swamped

0.017

0.000

15


Power vessel, Cuddy Cabin, V-Hull

0.069

-0.080

19


Power vessel, cabin cruiser, medium displacement

0.040

0.000

20


Commercial fishing vessel, 13m - 30m, unknown type

0.037

0.020

48


Commercial fishing vessel - Sampans

0.040

0.000

48


Commercial fishing vessel - Side Stern Trawler

0.042

0.000

48


Commercial fishing vessel - Longliners

0.037

0.000

48


Commercial fishing vessel - Junk

0.027

0.100

48


Commercial fishing vessel - Gill netter, with rear reel

0.040

0.010

33


Coastal Freighter

0.028

0.000

48


Flotsam - fishing vessel debri

0.020

0.000

10


Flotsam - bait box

0.013

0.270

31




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