ClassNK notation for ships using gas as primary fuel - certifies IGF Code compliance + additional GF-specific requirements.
Formula
$$ \text{GF} = \forall(\text{IGF, DF engine, Tank, Bunker}) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $IGF$ | International Code of Safety for Ships using Gases or other Low-flashpoint Fuels | - | MSC.391(95) |
Sources
- IMO IGF Code MSC.391(95).
- ClassNK Part H.