UFC 4-213-10
15 August 2002
CHAPTER 2
SHIPYARD LAYOUT
2-1
SHOP FACILITIES. Locate a drydock near yard supporting industrial
shops, or vice versa, from which material requiring fabrication or manufacture may be
obtained.
2-2
LAYDOWN SPACE. Provide ample space on both sides of a drydock. If
there are no restrictions, furnish a strip at least 76.2 m (250 ft) wide on each side of the
drydock coping and at the head end.
2-3
POWER AND UTILITIES. Proximity to sources of power and utilities is
desirable but seldom a determining factor. Electricity, fresh water, saltwater fire
protection, compressed air, steam, oxygen, acetylene, and sewers are usually required
as described in Chapter 8.
2-4
CRANE AND CRANE TRACKS. Captive cranes should not be used if it
can be avoided. Trackage should be interconnected for portal crane utilization
elsewhere in the same yard.
2-5
SHIP APPROACHES. Maneuvering a ship into a drydock necessitates
careful attention to the shape of the approach body of water, locations of ship channels,
prevailing winds, currents, and relationship to other waterfront structures.
2-5.1
Turning Basins. A ship must parallel the long axis of a drydock before it
enters; therefore, provide a turning basin of appropriate width, length, and depth of
water outboard of a drydock entrance.
2-5.1.1
Measurements. The length and depth of a drydock are indicative of the
maximum ship to be accommodated. Use these measurements to define the size of a
turning basin:
2-5.1.1.1
Width. The turning basin should have a width outboard of the drydock at
least two times the dock length and properly shaped for turning.
2-5.1.1.2
Depth. The depth of water in the turning basin should be no less than that
at the entrance sill of the drydock.
2-5.1.2
Allowance for Turns. Where piers or other structures extend into a
waterway and flank the approach to a drydock entrance, the turning basin should be
large enough to allow a ship to be turned before coming abreast of such flanking
structures.
2-5.1.3
Clearance. A drydock must not be located where flanking structures are
too close to the path of a ship entering or leaving the drydock. Leave room for tugs to
operate beside a ship until it is clear of the drydock entrance. The distance between
such structures and the side of the ship path should not be less than 45.7 m (150 ft).
2-1
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