UFC 4-150-06
12 December 2001
Figure 5-6 Factors Affecting Squat.
where:
z
=
depth of squat [ft]
h
=
channel depth [ft]
=
average channel width [ft]
w
2
underwater midship cross section [ft ] = DB
A
=
D
=
vessel draft [ft]
B
=
vessel beam [ft]
V
=
vessel speed through water [ft/sec]
VL
=
theoretical limiting vessel speed [ft/sec]
2
gravitational acceleration [32.2 ft/sec ]
g
=
S
=
ratio of underwater midship cross section to the channel cross
A
section =
wh
VL
F
=
Froude number =
gh
5-21
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