TM 5-850-1
CHAPTER 11
DOCKSIDE UTILITIES FOR SHIP SERVICE
11-1.
Water service.
11-3.
Location and numbers of service points.
Water service should be provided in sufficient capacity
A minimum of two service points will be provided for
to permit the filling of a vessel's tank in such time as to
each berth, located for the convenience of the using
avoid delays in the operation of the vessel.
vessels. Each service point will supply electric power
and water service as outlined above. Depending upon
a. Quantity and pressure requirement. A minimum
the details of each specific installation, the takeoff points
for each service may be located in a single service box
flow of 100 gallons per minute, with a minimum residual
or placed in separate but closely grouped boxes.
pressure of 25 pounds per square inch at the most
Boxes should be located as close as practicable to the
remote outlet, should be provided.
berthing face of the structure so that connected hoses
b. Piping and outlets. One 2 inch connection
and electric cables are not subject to traffic damage.
at each service outlet should be installed. All potable
11-4.
Miscellaneous.
water outlets on piers and wharves may have a reduced
pressure-type backflow prevention device. The piping
a. Telephone service. Telephone outlets should be
will be insulated and electrically heat-traced if the lines
are normally full of water and subject to freezing
installed at each ship's service outlet location.
temperatures. Where thermal expansion is a problem,
provision should be made for expansion joints or loops.
assured for night operation. For open watering areas on
the pier deck.
the pier where ship loading or unloading occurs, a
lighting intensity of at least 5 footcandles should be
11-2.
Electric power.
maintained. The illumination level of 5 footcandles
should also be provided for warehouses or storage
a. Electrical system characteristics. The main
buildings.
electrical system providing power to ships will be
c. Fire protection. Fire protection should be in
nominal 480 volts, three-phase, 60 Hertz, supplied from
substations preferably located on piers. For lighting
accordance with AR 420-90 (See App. A).
service, a 120-volt, 60-cycle, single-phase power may
d. Sanitary facilities and sewage disposal.
be provided.
Sanitary facilities are usually confined to such buildings
b. Ground system. At piers, wharves, and other
as warehouses, transit sheds, administration rooms, and
waterfront structures, a ground system that will measure
the like. Flow requirements for such facilities are very
not more than 3 ohms should be provided for all
small, approximately 5 to 10 gallons per minute. A
permanent electrical equipment.
dockside connection to a sewage disposal system
should be provided for the disposal of sewage and other
wastes from vessels.
11-1
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