IGC Code Tank Types A / B / C / Membrane
IGC Code cargo-containment tank type selection - independent A/B/C or integrated membrane.
Typical use
LNG Moss (spherical) and SPB (prismatic) - large LNG ships
Formula, assumptions, and limits
Each type has specific IGC scantling + material + inspection rules. Type B spherical tanks (Moss) were dominant on pre-2000 LNGCs; current newbuilds favour membrane for higher cargo capacity in same hull.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| IGC tank types | - | IGC Ch.4 |