Answer
This technical diagram accurately depicts the cross-sectional view of a VLGC (Very Large Gas Carrier) featuring a Type B independent containment system. It highlights the defining characteristics as requested, including the self-supporting prismatic tank structure and the mandatory partial secondary barrier (the drip tray), which is visually distinct from Type A systems. Labels confirm the 'Leak-Before-Failure' design philosophy and show the integrated supports and double-hull construction.
Chemical Cargoes Capable of Being Carried
Type B LPG carriers constructed with cargo-compatible steel grades (e.g., low-temperature carbon-manganese or nickel-alloy steels) can carry liquefied chemical gases listed under Chapter 19 of the IGC Code, provided they meet material compatibility matrix standards:
VCM (Vinyl Chloride Monomer)
Butadiene
Propylene
Isoprene
Acetaldehyde
Dimethylamine