UFC 4-159-03
3 October 2005
Table 3-6. Ship Mooring Hardware Design Criteria
a. Ship Anchor Systems*
VESSEL
TYPE
MINIMUM
MINIMUM
MINIMUM
WATER
WIND
CURRENT
DEPTH
SPEED
SPEED
Ships
240 ft
70 knots
4 knots
73 m
32.9 m/s
1.54 m/s
Submarines
120 ft
70 knots
4 knots
36.6 m
36.0 m/s
2.06 m/s
b. Ship Mooring Systems**
MOORING SERVICE TYPE MINIMUM WIND SPEED
MINIMUM
CURRENT
SPEED
Type I
35 knots
1 knot
18.0 m/s
0.51 m/s
Type II***
64 knots
2 knots
33.0 m/s
1.03 m/s
Type III
95 knots
2 knots
48.9 m/s
1.03 m/s
*Quasi-static design assuming wind and current are co-linear for ship and submarine
anchor systems (after NAVSEASYSCOM DDS-581).
**To define the design water depth, use T/d=0.9 for flat keeled ships; for ships with non-
flat hulls, that have sonar domes or other projections, take the ship draft, T, as the mean
depth of the keel and determine the water depth, d, by adding 0.61 meter (2 feet) to the
maximum navigation draft of the ship (note, may vary depending on sonar dome size).
***Ships need to carry lines suitable for MST IIB.
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