ABS grants approval in principle for new multipurpose LNG vessel


ABS grants approval in principle for new multipurpose LNG vessel 

HOUSTON -- ABS has granted approval in principle (AIP) to a new liquefied natural gas (LNG) and regasification articulated tug barge concept introduced by Waller Marine Inc.

The vessel has the ability to load LNG from existing LNG terminals, liquefaction facilities, or traditional LNG carriers and transport the LNG to existing tanks, traditional LNG carriers, trucks, or marine vessels using LNG as a fuel. The barge also is equipped for regasification of LNG directly to a pipeline or to a power plant. An additional feature will be the use of natural gas as a fuel in the dual fuel engines of the tug to drive the tug-barge unit.

The benefit of the LNG Articulated Tug and Barge Regas Vessel (ATB RV) is that it allows LNG to be moved and delivered more efficiently on a small-scale basis in locations where large LNG infrastructure would be cumbersome, costly, and time consuming.

The barge will be fitted with independent Type ‘C’ LNG tanks. To make most efficient use of the hull volume and maximize the cargo-carrying capacity of the barge, bi-lobe tanks of maximum width are centered along the barge centerline. The cargo containment system is split into four longitudinally located independent tanks, with each tank supported by a simple structure that isolates the tanks from hull loads. According to Waller Marine, these tanks will be constructed of either 9 percent nickel steel or Stainless Steel AISI 304L to contain the cargo at a minimum temperature of -163° C.

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