The two companies have introduced a cylindrical steel tank which is independent from the vessel hull.
They explained this design allows the tanks to expand in all directions without putting stress on the ship.
Deltamarin has basically adjusted its bulk carrier design and adapted it to the demands of gas carriers by adding the tanks.
Mika Laurilehto, managing director of Deltamarin, said: "As a bulk carrier, the vessel is easier and cheaper to build compared to a traditional gas carrier, and there may be many new potential yards capable of constructing such a vessel."
