Triality - Presstogo

4 triAlity vlcc
The Triality VLCC
triality is an innovative concept
vlcc that fulfils three main
goals:
1. it is environmentally superior
to conventional vlccs
2. it has technically feasible
solutions
3. it is more economical than
conventional vlccs
the name triality reflects these
three main elements. triality is
defined as three united, “the
state of being three”.
triality is a vlcc that has the same operational range and capacities as
other vlccs. three most likely trading routes have been selected for our
study, all starting in the gulf. one is to the Us, one is to europe and one
is to china:
the triality concept consists of different elements. each has been compared
environmentally and economically with a base case which represents
a conventional vlcc. the first step was the introduction of lng as fuel in
a conventional vlcc. the main engine is a high pressure dual fuel ( gas or
oil fuel) two-stroke engine, while the generator engines are low pressure
dual fuel engines and the boilers are also multi fuel versions.
the next step was to introduce a ballast-free more v-shaped hull design in
addition to the lng propulsion. the limited draft leads to some changes to
the machinery configuration, and a two-propeller arrangement has been
chosen. finally a voc re-condensation system and the cooling of the main
engine scavenging air were added. each step makes the concept better
from both an economic and environmental point of view.