US Navy Ships Conduct Astern Replenishment-at-sea

Posted by Eric Haun August 24, 2016

Sailors man the rails of Avenger-class mine countermeasures ship USS Pioneer (MCM 9) as the ship leaves a Commander, U.S. Fleet Activities Sasebo pier. Avenger-class ships are designed as mine sweepers/hunter-killers capable of finding, classifying and destroying moored and bottom mines. (U.S. Navy Photo by Kristopher S. Haley)

“While replenishments-at-sea are routine, astern refueling is unique and requires precise navigation and coordination,” said Lt. Cmdr. Jason Ileto, fleet replenishment scheduler for Commander, Logistics Group Western Pacific. “[USS Pioneer (MCM 9)] and other minesweeping vessels have fueling stations on their bows and require astern refueling.”

An astern replenishment-at-sea was conducted by Avenger-class mine countermeasures ship Pioneer and Lewis and Clark-class dry cargo ship USNS Richard E. Byrd (T-AKE 4) in waters south of Japan, August 24.

During normal replenishment evolutions, ships fueled at sea typically connect to each other alongside. Astern refueling is the earliest type of replenishment operation used by the U.S. Navy. The receiving ship follows directly behind the supplying ship, though this evolution is more limited as only one transfer rig can be set up.

According to the Navy, the astern refueling of Pioneer reflects the flexibility of Military Sealift Command ships and crews to deliver innovative expeditionary logistics support to the fleet. Richard E. Byrd and Pioneer are currently operating in the U.S. 7th Fleet area of responsibility.