New GTT and SDARI tech gets DNV approval

Classification society DNV has approved GTT’s and SDARI’s new technical solution applied to LNG fueled bulk carriers fitted with GTT membrane tank.

GTT designed the tank up to the supporting steel wall and its integration into the vessel was studied by SDARI.

This AiP confirms that the membrane fuel tank solution complies with safety regulations and is technically feasible onboard LNG-fueled bulk carriers, GTT noted in its statement.

This design improvement increases autonomy and reduces sulphur and greenhouse gas emissions compared to a standard Newcastlemax design, the statement reads.

Furthermore, it offers great flexibility as vessel can sail a Brazil-China round trip with a single LNG bunkering. This solution, with optimal LNG storage, does not affect the available cargo space nor the vessel’s accommodation, GTT said.

GTT, SDARI and DNV studied, among other things, the structural arrangement of the LNG tank above of the engine room, the dimensioning of the LNG injection system from the tank to the engines, as well as the interface of the LNG bunker station.

Aspects relating to naval architecture, such as damaged stability, were also reviewed by DNV.

Morten Løvstad, VP and Global Business Director- Bulk Carriers of DNV, said, “This new design is yet another proof of the many innovations taking place to facilitate decarbonisation within the transportation of dry bulk cargo. It is the first AiP issued by DNV for the use of membrane technology as fuel tank onboard bulk carriers, and forms an important milestone.”