28 July 2005
require the use of fragmentation barriers, or specific separation distances,
spacing must be adjusted per the requirements of NAVFAC OP5.
CVNs are typically moored "starboard side to" to allow access to the ship's three
Pier and Wharf Width.
Pier width as used in this UFC refers to the net operating width of the structure,
exclusive of fender systems, curbs, and dedicated utility corridors. Refer to
Figure 2-4. This definition also holds for U-, L-, and T-type wharves. However,
with reference to wharves, the width should be the dimension to a building,
roadway, or other identifiable obstruction. Refer to Table 2-2 for minimum widths
established for each functional type other than general purpose berthing piers.
Review with specific functional requirements of the individual installation in mind
before a final selection is made. Functional requirements include space for:
cargo loading operations, line handling, ship maintenance, maintenance of
utilities and layout of cables and hoses, solid waste collection, brows and
platforms, crane operation, and other operations. For crane operation, consider
crane outriggers, tail swing of crane counterweights, and overhang of vessels.
For CV's and CVN's, coordinate the tail swing of gantry cranes with the overhang
of the flight deck and elevators considering available camels and potential list of
the ship. Also, these dimensions should not be less than the widths determined
by geotechnical and structural considerations. Factors to be considered in the
determination of pier and wharf width are discussed below.
One of the primary functions of a pier or wharf is to provide connections for
utilities from ship to shore. Fixed utility terminals are usually provided close to
the edge of the pier or wharf along the bullrail. Flexible hoses and cables are
then connected to these terminals and to the ship. Depending upon the type of
utility hoods, the terminals, hoses, and cables may require 10 to 15 ft (3 m to 4.6
m) of space along the edge that cannot be utilized for any other purpose.
Consider the types of utility hoods that require additional edge space for cable
and hose laydown. On single deck piers, substations are typically mounted on
the deck, which require an additional 25 ft (7.6m) of pier width. Double deck
piers are used where the width of the berth area is constrained by adjacent
facilities or other limitations. This configuration allows the utility enclosures and
the associated hoses, cables and maintenance activities to be segregated from
the operational areas and allow crane operations closer to the edge of the pier or
Berths on One Side.