Finnish ship designer Deltamarin, part of AVIC
Group, together with France's Gaztransport & Technigaz (GTT),
an engineering company involved in membrane containment systems
for transport and storage of LNG, has studied the use of
membrane-type tanks on cargo and passenger vessels.
For quite some time now, Liquefied Natural Gas (LNG) has been an
established fuel alternative for short sea shipping routes and
also acts as a complementary fuel for longer routes. Deltamarin's
references include various vessels with LNG capabilities, and
usually a C-type tank is the commonplace solution for fuel
However, when the desired range, autonomy or ship size increase,
other tank technologies may become more viable for LNG fuel
storage. Among them, a well-known and experienced technology is
the membrane-type tank by GTT.
In close cooperation with GTT, Deltamarin has created a unique
portfolio of cargo and passenger vessels to save valuable cargo
space compared to classic cylindrical-type LNG tank solutions and
to enable the use of LNG for long ocean voyages.
The portfolio includes a container vessel, a pure car and truck
carrier (PCTC) and a cruise ship. During the development project,
each of the vessels was equipped with a modularised GTT membrane
tank type solution, which can be adjusted in size from 1,000 to
5,000 m³, depending on the case vessel.
Either one or multiple tanks can be integrated into the vessel.
The final fuel capacity is a trade-off between desired cargo
capacity and bunkering intervals.
In addition to its existing vast experience in the conventional
C-type tank solution, Deltamarin is now able to provide an
extensive solution for LNG as fuel with the GTT Membrane tank.