US commercial shipyard Aker Philadelphia said it has launched its latest ship, the eighth in a series of 12 product tankers to be completed by 2011.

The 46,000dwt vessel was floated off and transferred by tug from the building dock to the outfitting dock for sea trials, Aker said.

The vessel, to be christened Overseas Cascade, will be used in deepwater US Gulf of Mexico.

Aker Philadelphia Shipyard is a member of the Norwegian-based Aker family of companies.