GTT granted AiP for ballast-free LNG bunker vessel

The solution developed by GTT eliminates the risk of invasive species transfer and also reduces the CO2 footprint of the vessel by negating the need for operating a ballast water treatment system.

The GTT Shear-Water concept is based on the currently proven vessel of 18,700 m3 capacity with two membrane tanks. The design also features a new V-shaped hull which differs from the standard square shaped mid-ship sections traditionally used for LNG carriers.

An exhaustive testing campaign has been carried out at the HSVA Hamburg tank test facility in connection with power-speed, manoeuvrability and sea keeping. A sloshing test campaign has also been carried out by GTT to ensure the technical feasibility of the project: the excellent results obtained helped approve the concept.

Philippe Berterottière, Chairman and CEO of GTT, said: “We are proud to have developed Shear-Water, an innovative ballast-free design for LNG bunker and feeder vessels. This new technological solution allows a reduction in investment and operating costs, simpler operations as well as a reduction in corrosion supporting a longer service life. Obtaining this approval by Bureau Veritas constitutes recognition of the ecological relevance and performance of our technological solution.”

Mathieu De Tugny, Vice-president of Bureau Veritas said: “Bureau Veritas has given approval in principle to this new design, which has clear performance and environmental benefits: elimination of the need for ballast water treatment systems and equipment; easier maintenance of the void spaces surrounding the cargo, and reduced propulsion power requirements. Bureau Veritas has monitored and reviewed all the test results performed to support its Approval in Principle.”