Washington-based marine engineering firm Jensen Maritime has designed two barges for Global Marine Transportation.
The double-hulled barges have been designed for lightering services, the company said.
The vessels, scheduled to be delivered in 2010, will be built by Trinity Marine Products and chartered to Maxum Petroleum.
The barges are designed with corrugated cargo tank bulkheads to ease tank stripping and cleaning.
The first barge will carry diesel oil and jet fuel in and around the ports of Los Angeles and Long Beach while the second vessel will be home-ported in Seattle, Washington.