12 May 2003
Including change 1, 19 January 2007
U.S. ARMY REQUIREMENTS
APPLICABILITY. This chapter is applicable for waterfront facilities
designed for U.S. Army vessels.
POTABLE WATER. Provide potable water in sufficient capacity to permit
the filing of a vessel's tank in such time as to avoid delays in the operation of the vessel.
Quantity and Pressure Requirement. Provide a minimum flow of 6.3 l/s
(100 gpm) with a minimum residual pressure of 173 kPa (25 psi) at the most remote
Piping and Outlets. Install one 63.5 mm (2-1/2 in) connection at each
service outlet. Potable water outlets on piers and wharves should have a reduced
pressure-type backflow prevention device. The piping must be insulated and provided
with electrical heat tape if the lines are normally full of water and subject to freezing
temperatures. Where thermal expansion is a problem, provision should be made for
expansion joints or loops. Figure 7-1 shows a typical potable water connection in the
Electrical System Characteristics. The main electrical system providing
power to ships will be nominal 480-volts, three-phase, 60-Hz, supplied from substations
preferably located on the piers. For lighting service, a 120-volt, 60-cycle, single-phase
power may be provided.
Ground System. At piers, wharves, and other waterfront structures, a
ground system that will measure not more than 3 ohms must be provided for permanent
LOCATION AND NUMBERS OF SERVICE POINTS. A minimum of two
service points will be provided for each berth and located for the convenience of the
using vessels. Each service point must supply electric power and water service as
outlined above. Depending upon the physical site conditions of each specific
installation, the point of connection for each service may be located in a single service
box, or may be placed in separate but closely grouped boxes. Boxes should be located
as close as practicable to the berthing face of the structure so that connected hoses and
electric cables are not subject to vehicular traffic damage.