| Abbreviation | Definition |
|---|---|
| IC1 | Interior Communications Electrician Petty Officer 1st Class |
| IC1 | terior Communications Electrician Petty Officer 1st Class |
| IC2 | Interior Communications Electrician Petty Officer 2nd Class |
| IC2 | terior Communications Electrician Petty Officer 2nd Class |
| IC3 | Interior Communications Electrician Petty Officer 3rd Class |
| IC3 | terior Communications Electrician Petty Officer 3rd Class |
| ICC | Interior Communications Electrician Chief Petty Officer |
| ICC | terior Communications Electrician Chief Petty Officer |
| ICCS | Interior Communications Electrician Senior Chief Petty Officer |
| ICCS | terior Communications Electrician Senior Chief Petty Officer |
| ICFA | Interior Communications Electrician Fireman Apprentice |
| ICFA | terior Communications Electrician Fireman Apprentice |
| ICFN | Interior Communications Electrician Fireman |
| ICFN | terior Communications Electrician Fireman |
| ICFR | Interior Communications Electrician Fireman Recruit |
| ICFR | terior Communications Electrician Fireman Recruit |
| IGOM | IATA Ground Operation Manual |
| IIMN | Integrated Institute of Merchant Navy |
| IJN | Imperial Japanse Navy |
| IJNA | Indonesian Journal of Naval Architecture |