Originally built in 1963, the Petersburg was one in a fleet of five tankers fitted with an offshore petroleum discharge system.
An Offshore Petroleum Distribution System (OPDS) provides a semipermanent, all-weather facility for bulk transfer of petroleum, oils, and lubricants (POL) directly from an offshore tanker to a beach termination unit (BTU) located immediately inland from the high-water mark. POL then is either transported inland or stored in the beach support area.
Major OPDS components are: the OPDS tanker with booster pumps and spread mooring winches, a recoverable single-anchor leg mooring (SALM) to accommodate four tankers up to 70,000 DWT, ship to SALM hose lines, up to four miles of six-inch (internal diameter) conduit for pumping to the beach, and two BTUs to interface with the shore-side systems. The Petersburg also contains stowage cradles for five OPDS utility boats (OUBs) and a 59 LT capacity crane to load/offload the OUBs.
|Builder||Bethlehem Steel, Sparrows Point MD.|
|Net Tons||18,685 tons|
|Gross Tons||27,469 tons|
|Cargo Capacity||174,900 barrels|
|Propulsion||2 Foster Wheeler 2 drum "D" watertube boilers.
Bethlehem Steel high pressure impulse-reaction turbine and low press reaction turbine.
Falk double reduction, double helical reduction gears.
|Propeller||5 blades. 22' 6" Diameter|
|Speed (loaded)||14 KTS @ 100 RPM|
| 40 active crew members
15 navy military detachment personnel