France, June 4 -- GTT has obtained an Approval in Principle (AiP) from DNV for its Mark III membrane LNG tank design rated for 1 barg, surpassing the current standard of 0.7 barg, according to GTT's release.This approval extends the operational range of the Mark III technology, following DNV's previous AiP for a 2 barg design pressure on smaller-capacity tanks, notably suited to cruise ships. Key benefits for ship-owners include:-Extended Pressure-Holding Time: The increased design pressure lengthens the duration before the tank reaches maximum pressure, reducing the need to burn boil-off gas during low engine load periods. -Warmer-Temperature Bunkering: Vessels can load LNG at higher temperatures, allowing access to a broader range of LNG ...