UFC 4-152-01
28 July 2005
NAVFAC's Contingency Engineering Group is responsible for providing support
in delivering engineer services to forward environments. This support enables
engineer response to the full range of expeditionary (non-permanent) services,
i.e. piers, wharves, and causeways at advance bases and remote areas.
NAVFAC's Contingency Engineering Group is supported by the Naval Facilities
Engineering Logistics Center, the Naval Facilities Engineering Service Center's
Amphibious Operations and NAVFAC's Sealift Support Program Office. These
groups, working together, develop and manage sealift support products including
modular, floating and elevated piers, wharves, and docks; powered and non-
powered causeways; roll-on/roll-off floating platforms; and fabrication of special
craft and bulk liquid transfer systems. Some examples are noted below
a. Steel Pontoon Wharf. Modular steel pontoon structures may be used
for temporary facilities to berth ships up to loaded drafts of 30 ft (9.1 m.)
This structure type may be provided where it is not advisable to construct
a fixed facility and at advanced bases where versatility and ease of
deployment are required. The allowable uniform loading is limited, as is
the capacity for mobile cranes.
b. Navy Lightered (NL) P-Series Pontoon Structures. Navy lighterage
structures, when joined together, form a roadway to permit movement of
vehicles, personnel and supplies from ship to shore during amphibious
operations. In addition to bridging the gap between ships and the beach,
floating causeways may be used as lighterage barges to transport
vehicles and supplies to a wharf or to a beach, or may serve as piers for
unloading small craft. NL pontoons are reinforced, welded steel cubes, 5
ft (1.5 m) long, 7 ft (2.1 m) wide, and 5 ft (1.5 m) high, capable of
accommodating HS-20 truck loading as specified by AASHTO. Pontoons
are assembled into strings which are joined to form pontoon barges and
pontoon bridge units. Thus, a 3 x 15 pontoon consists of 3 strings of 15
pontoons each. The primary NL lighterage structures are 3 x 15
causeway sections of both powered and non-powered variety. Two
powered configurations include the Side Loadable Warping Tug (SLWT)
and the Causeway Section Powered (CSP). Three non-powered
configurations include: the Causeway Section Non-powered Intermediate
(CSNP-IN), the Causeway Section Non-powered Beach (CSNP-BE), and
the Causeway Section Non-powered Offshore (CSNP-OS). These
powered and non-powered causeway sections can work together in
various configurations to form barge ferries, floating piers, elevated piers,
and Roll-On/Roll-Off Discharge Facilities (RRDF) used to assist
downloading RO/RO ships while moored in stream. Construction,
operation and maintenance of these NL P-Series Pontoon Structures is
described and illustrated in UFC 4-159-05N.
c. Improved Navy Lighterage System (INLS). NAVFAC's Sealift Support
Program Office is currently working on a more efficient method of moving
equipment from ships to shore in locations where conventional port
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