“In , DNV GL developed the LNG-fuelled VLCC concept Triality,” noted Deng Ling, DNV GL project manager and ship type expert for LNG. Today, DNV unveiled a concept tanker design called Triality, an LNG powered VLCC featuring a hull shape that completely removes the need. A noteworthy project undertaken by Det Norske Veritas, called TRIALITY, incorporates several new and interesting concepts in ship design and.

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Here is the full press release from DNV on the innovative new design. The introduction of a new crude oil tanker concept that is fuelled by liquefied natural gas, has a hull shape that removes the need for ballast water and will almost eliminate local air pollution.

Interesting Concept Design of The Week – DNV’s VLCC concept vessel “Triality” – gCaptain

This concept vessel also recovers hundreds of tons of cargo vapours on each voyage and represents a major step towards the new environmental era for the tanker shipping industry. The new crude oil concept vessel, named Trialityhas been developed through a DNV innovation project.

As its name indicates, it fulfils three main goals: Bythe majority of owners will order ships that can operate on liquefied natural gas LNG. Both ships have the same operational range and can operate in the ordinary spot market.


The new concept tanker has two high pressure dual fuel slow speed main engines fuelled by LNG, with marine gas oil as pilot fuel.

The next phase of the Triality concept development will review the use of dual fuel medium speed engines and pure gas engines.

Two IMO type C pressure tanks capable of holding 13 m3 LNG — enough for 25 nautical miles of operation — are located on the deck in front of the superstructure. The generators are dual fuel LNG and marine gas oil while the auxiliary boilers producing steam for the cargo oil pumps operate on recovered cargo vapours VOCs. No ballast water A traditional tanker in unloaded transit needs ballast water to obtain full propeller immersion and sufficient forward draft to avoid bottom slamming.

The new V-shaped hull form and cargo tank arrangements completely eliminate the need for ballast water in the VLCC version. There will also be much less need for ballast water on other kinds of crude oil tankers, such as Suezmax, Aframax and smaller ships.


TRIALITY – Definition and synonyms of triality in the English dictionary

The new hull shape results in a reduced wetted surface on a round trip and has a lower block coefficient and thus a more energy efficient hull. A VLCC in unloaded transit will normally carry between 80 and tons of sea water containing organisms tfiality can cause damage when released into foreign ecosystems.


In addition, a lot of fuel is needed just to transport this extra water. The Triality VLCC can collect and liquefy more than tons of cargo vapours during one single round trip.

These liquefied petroleum gases will then be stored in deck tanks and up to half will be used as fuel for the boilers during cargo discharge, while the rest can be returned to the cargo tanks or delivered to shore during oil cargo discharge. Environmentally superior ship also profitable When it comes to the additional cost of building a vessel like Triality and the reduced cost of operating triaoity, Henrik O.

The Triality concept is based on well known and proven components and systems, so in principle a Triality crude oil tanker introducing all or some of the innovative elements in the concept can be designed today.

Avatars trriality Sterling Adventures.