MIL-HDBK-1025/5
Minimum basin depths shall be as follows:
Main basin channel:
15 feet
a)
Access slips:
12 feet
b)
Berths for boats 30 feet and smaller:
8 feet
c)
Berths for boats 65 feet long:
12 feet
d)
Berths for boats of intermediate lengths:
8 to 12 feet
e)
Entrance Channel and Structures
2.1.4
Channel Alignment. The channel alignment shall be as close to the
2.1.4.1
natural channel alignment as possible.
Channel Width. The waterside approach to the small craft harbor
2.1.4.2
shall be as wide as possible to permit safe, simultaneous entrance and exit of
the widest boat anticipated. For small-boat traffic, allow a minimum width of
150 ft (45.1 m) if the entrance is in line with the main channel. Allow a
minimum width of 250 ft (76.2m) if the boat is making an immediate turn inside
the boat basin.
Channel Depth. Entrance channel depth shall be the sum of draft,
2.1.4.3
vessel squat, one-half of the wave height, and overdepth. An overdepth of
1 ft to 2 ft (.30 - .61 m) in soft material and 2 to 3 ft (.61 - .91 m) in
rock is allowed for dredging irregularities. Minimum depths shall range
between 6 ft (1.83 m) for boats smaller than 20 ft (6.1 m) long and 15 ft
(4.6 m) for boats longer than 60 ft (18.3 m).
Jetties.
Jetties shall be provided to protect the entrance channel
2.1.4.4
from waves in the basin and from littoral drift entering the channel from the
flanking beaches. Spacing of jetties shall accommodate both the entrance
channel and a protective berm of appropriate width on either side of the
jetty. Jetties shall be constructed from the shore-end outward.
Other Protection. Where basin configuration warrants, provide
2.1.4.5
breakwaters, groins, and other basin protection such as basin flushing and
access. Refer to para. 2.5 for design guidelines.
Aids to Navigation.
Refer to DM-26.1 for navigational aids.
2.1.4.6
Turning Area. For average berthing basin conditions, provide a
2.1.5
width of water area for turning, and for entering and leaving slips equal to
2-l/4 times the length of the longest boat. If there is a predominance of
single- or twin-screw boats, this criterion shall be 2-l/2 and 2 respectively.
Environmental Siting Considerations
2.2
Local Weather
2.2.1
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