জলযান্ত্রিক - NAME Fest 2018

SN
Description
Affected Items
/ Parameters
General Approach
1
Distance of
transport
Ship size / type
Containment
system
For economy of scale, larger ships with bigger cargo volume
are preferred for longer distances.
> 2,500 km - Type B (or) membrane tank preferred
≤ 2,500 km - Type C tank preferred
2
Volume of
LNG to be
transported
Containment
system
≤ 22,000 m 3 - Type C tank
> 22,000 m 3 - Type B tank
18,000 ~ 265,000 m 3 membrane tank
3
Boil-off
rate /
handling
method
Containment
system
Main engine
If boil-off gas is not used for ship, Type C tank is preferred,
alternatively Re-liquefaction plant is needed
Duel-fueled Engine preferred where higher boil-off gas
quantity available, esp. over longer transport routes (>7days)
4
Water
depth at
site
Ship draft
Ship draft is limited by water depth at site. Shallow draft
vessel / self-propelled LNG barge would be required for
shallow water ports / inland rivers