Navy ship completes test trials using 100% renewable diesel

  • 20-Aug-2016 12:45 EDT

The Navy's ex-USS Paul F. Foster anchored off the southern coast of California in 2015. The former DD-964 Spruance-class destroyer serves as the new Self Defense Test Ship for Naval Surface Warfare Center. (U.S. Navy photo: Mass Communication Specialist 2nd Class Timothy M. Black)

It’s a first for a U.S. Navy ship: running on 100% renewable fuel, that is.

As a part of the Navy’s MILSPEC qualification program, the Naval Surface Warfare Center, Port Hueneme Division's (NSWC PHD) Self Defense Test Ship (SDTS), ex-USS Paul F. Foster, formerly a Spruance-class destroyer decommissioned in 2003, operated on 100% drop-in renewable diesel fuel in final-phase testing of the alternative fuel.

ReadiDiesel, developed by Applied Research Associates (ARA) and Chevron Lummus Global as a drop-in replacement for petroleum-based F-76 marine diesel, is a 100% renewable biofuel. The renewable diesel fuel powered the SDTS’ General Electric LM-2500 gas-turbine engine and a Rolls Royce 501 K-17 gas-turbine generator.

One critical advantage appears to be that ReadiDiesel would require no modifications to the Navy’s current refueling infrastructure. According to ARA, ReadiDiesel (and its jet-fuel counterpart, ReadiJet) does not have to be segregated from conventional petroleum-based diesel fuel. The fuels can utilize existing petroleum infrastructure without the need to build additional, costly infrastructure for blending, transportation and storage.

The SDTS took on approximately 18,000 gal (68,137 L) of ReadiDiesel in San Diego, CA. The test period lasted approximately 12 hours along the Southern California coast while en route from San Diego to Port Hueneme. Navy engineers monitored the performance of the gas-turbine engines and generators while running on petroleum F-76 prior to taking on the ReadiDiesel to establish a baseline for comparison.

While operating on 100% ReadiDiesel, the ship successfully completed multiple engine starts and speed changes. There were no mechanical, operational or qualitative differences when operating on ReadiDiesel, the Navy reported.

In addition to its role as bio-diesel test mule, the ex-USS Paul F. Foster has also served as a testbed for laser systems and remote-control operations.  

HTML for Linking to Page
Page URL
Rate It
3.67 Avg. Rating

Read More Articles On

The engine maker used the ConExpo 2017 stage to announce its intention to produce a dual-fuel capable (natural gas and propane) off-highway engine by mid-2018, leveraging its already-in-production on-highway CNG truck engine.
Active flow control devices based on electric plasmas can smooth the turbulent wakes that sweep off the rear edges of truck trailers travelling at highway speeds.
Commercial vehicles are beginning to adopt alternative energy sources, but the transition remains slow. Batteries and an array of renewable fuels are seeing more usage, but costs and infrastructure remain hindrances for these fragmented technologies.
Various levels of electrification, connected solutions and alternative fuels are among the technology pathways that will lead to reductions of CO2, according to AVL's Dr. Marko Dekena. He spoke with Truck & Off-Highway Engineering about a variety of topics ahead of this year's AVL International Commercial Powertrain Conference.

Related Items

Technical Paper / Journal Article