US-based shipyard General Dynamics Nassco has secured a contract from an affiliate of American Petroleum Tankers (APT) to design and build four 50,000dwt LNG-conversion-ready product carriers.
The order includes options to build four additional tankers, with each vessel able to carry 330,000 barrels.
Nassco will start construction of the vessels in the third quarter of 2014, and deliveries are expected to begin in the fourth quarter of 2015, continuing through 2016.
South Korean shipbuilder Daewoo Shipbuilding & Marine Engineering’s subsidiary Daewoo Ship Engineering Company (DSEC) will be responsible for providing an eco-conscious design for the new vessels.
DSEC’s ECO design provides improved fuel-efficiency and incorporates the latest environmental protection features, including ballast water treatment systems (BWTS), according to Nassco.
Construction of all the 185m-long ECO-class tankers will be carried out at Nassco’s shipyard in San Diego, US, according to the Jones Act, which requires that ships carrying cargo between US ports be built in US shipyards.
The ECO design features a G-series MAN ME slow-speed main engine and an optimised hull form.
The vessels will also be equipped with dual-fuel-capable auxiliary engines that can accommodate the future installation of an LNG fuel-gas system.
Nassco has already collaborated with DSEC for its ECO-class tankers on the construction of five APT State-class product tankers and is currently working on two LNG-powered containerships for TOTE Shipholdings.
General Dynamics Nassco president Fred Harris said: "Along with TOTE, this is the second return customer we have welcomed back to Nassco within the past six months, which speaks to the high-quality workmanship of our skilled workforce."
Image: Nassco will start construction of the vessels in the third quarter of 2014 at its San Diego shipyard, based on DSEC’s ECO design. Credit: NASSCO.