LNT Marine’s Type A containment system, LNT A-BOX, is installed aboard Saga Dawn, which completed its first shipment in April 2020. (Image: Saga LNG)
LNT Marine has signed a Joint Design Project agreement with SDARI and Wuhu Shipyard to develop a design for a 40,000cbm LNG carrier. The shallow draft ‘Wuhumax’ design will be optimised for operations in the Yangtze River, and will feature LNT Marine’s LNTA-BOX (Type A) containment system.
The design is optimised for the air draft and draught restrictions in the Yangtze River.
The LNT A-BOX design is based on an independent tank type A as the primary barrier and a full secondary barrier. Design and construction of type A tanks is based on classical ship structural principles and is reasonable to build. In addition, the tank is flexible in shape and geometry, catering for excellent volume utilisation, while internal structure mitigates sloshing and eliminates any loading limitations.
This loading flexibility, as well as the comparative simplicity of the cargo containment system, is understood to be among the potential advantages of LNT A-BOX for shallow draught vessel designs. LNT Marine identified shallow draught vessel designs as an area in which it was conducting research in 2019, alongside small and mid-size FSRUs.
On 26 May 2020, Saga LNG Shipping, which shares the same ownership as LNT Marine, signed a Memorandum of Understanding (MoU) with an Indian based LNG importer, Venerable LNG, to import LNG to a prospective LNG import terminal in the Bay of Bengal. As part of the project, Saga LNG will supply one or more shallow draft variants of its 45,000cbm LNG carrier design, featuring an LNT A- BOX containment system, with a fully laden draft of 7.8 metres.