General Dynamics Nassco said on April 2 that it made the initial cuts of steel on the third ECO tanker to be built for American Petroleum Tankers.

Tanker No. 3, which will eventually be named the Garden State, will be 610 feet long at completion, and able to carry 330,000 barrels of cargo. When the time is right, APT will be able to convert the 50,000-deadweight-ton ship from conventional fuel to liquefied natural gas.

Nassco is under contract to build five such tankers for APT.

Separately, the U.S. Navy announced that it awarded Nassco $61.8 million worth of work to the USS Makin Island. The $61.8 million undefinitized contract action, awarded March 31, covers maintenance, alternations and modifications to the Wasp-class amphibious transport dock ship. Amphibious transport docks have large, flat decks that resemble aircraft carriers; the Makin Island can carry about 1,700 Marines in addition to the ship’s crew.

The General Dynamics (NYSE: GD) unit, based in Barrio Logan, is expected to complete work on the Makin Island by November. The Southwest Regional Maintenance Center in San Diego awarded the deal.

In other news, Nassco announced that it will christen and launch a 764-foot container ship — the world’s first LNG-powered container ship — during an evening ceremony on April 18.

It will be Nassco’s 100th launch.

Nassco is building two of the container ships for TOTE Inc., a subsidiary of Saltchuk.