General Dynamics (GD) Nassco has laid the keel for one of the three ECO-class tankers currently being built for Sea-Vista, a joint venture between SEACOR Holdings and Avista Capital Partners.

The Liberty is a 610ft long LNG-conversion-ready product tanker with 50,000 deadweight ton (dwt) and has a cargo capacity of 330,000 barrels.

Designed by South Korea-based Daewoo Shipbuilding & Marine Engineering’s subsidiary DSEC, the liquefied natural gas (LNG) conversion-ready product carriers are based on ECO MR tanker design, which enhances fuel-efficiency and introduces the latest environmental protection features, such as a ballast water treatment system and lower emissions.

"The Liberty is a 610ft long LNG-conversion-ready product tanker with 50,000 deadweight ton (dwt)."

The vessel will be propelled by a G-series MAN ME slow-speed main engine.

The tankers will be fitted with conversion-capable, dual-fuel-capable auxiliary engines and can accommodate the future installation of an LNG fuel-gas system and tanks.

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The construction of the Liberty commenced in 2015 and following delivery it will be operated by Seabulk Tankers.

Construction and operation of the new vessel has been carried out in-line with the Jones Act, which requires that ships carrying cargo between US ports be built in local shipyards.

Last month, GD Nassco delivered the first of the three ECO-class tankers, the Independence to SEA-Vista.