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Squat 3

The document contains information about ship squat at various speeds in both open water and restricted fairways. It provides data on sinkage depth and safety margins under the keel for ships traveling between 0-20 knots. Ship squat increases with speed and is more pronounced in restricted fairways versus open water. Safety margins of 1.5 meters or more below the keel are recommended for ships up to speeds of 12 knots to account for increased squat effects.

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341 views1 page

Squat 3

The document contains information about ship squat at various speeds in both open water and restricted fairways. It provides data on sinkage depth and safety margins under the keel for ships traveling between 0-20 knots. Ship squat increases with speed and is more pronounced in restricted fairways versus open water. Safety margins of 1.5 meters or more below the keel are recommended for ships up to speeds of 12 knots to account for increased squat effects.

Uploaded by

api-27176519
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS or read online on Scribd
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SQUAT (in m) at various speed (rule of thumb)

Write ships Cb Write water depth (m) Write ships draft, (m) max Write safety margin
under keel (m)

0.85 11 8 1.5

Sinkage Open water Sinkage RestrictedDjupgående


fairway Ship Squat
Vattendjup Deep under keel (open water) Deep under keel (restricted) Safety under keel
0
7.0 0.0 0.0 8 11 3.0 3.0 3.0 1.5
1 0.0 0.0 8 11 3.0 3.0 1.5
6.5
2 0.0 0.1 8 11 3.0 2.5 2.9 1.5
6.0
3 0.1 0.2 8 11 2.9 2.0 2.8 1.5
5.5
4 0.1 0.3 8 11 2.9 1.5 2.7 1.5
5 0.2 0.4 8 11 2.8 2.6 1.5
5.0
6 0.3 0.6 8 11 2.7
1.0 2.4 1.5
4.5
7 0.4 0.8 8 11 2.6 0.5 Sinkage Open water 1.5
2.2
Sinkage (m)

4.0
8 0.5 1.1 8 11 2.5 0.0 1.9 1.5
Sinkage Restricted fairway
9 0.7 1.4 8 11 2.3 1.6 1.5
3.5 -0.5 Deep
10 0.9 1.7 8 11 2.2 1.3 under keel (open 1.5
water)
3.0
11 1.0 2.1 8 11 2.0 -1.0 Deep
0.9 under keel (restricted)
1.5
2.5
12 1.2 2.4 8 11 1.8 -1.5 0.6
Safety under keel 1.5
13
2.0 1.4 2.9 8 11 1.6 -2.0 0.1 1.5
14 1.7 3.3 8 11 1.3 -0.3 1.5
1.5
15 1.9 3.8 8 11 1.1 -2.5 -0.8 1.5
1.0
16 2.2 4.4 8 11 0.8 -3.0 -1.4 1.5
17
0.5 2.5 4.9 8 11 0.5 -3.5 -1.9 1.5
18 2.8 5.5 8 11 0.2 -2.5 1.5
0.0
19 3.1 6.1 8 11 -0.1
-4.0 -3.1 1.5
20 0 1 2 3 4 5 6 7 6.8
3.4 8 9 10 118 12 13 11 14 15 16 -0.4
17 18 19 20 -3.8 1.5
Speed (knots)

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