| 英文術語 | 英文全稱 | 中文解釋 |
| INSTEAD OF | ||
| IAC | INCLUDING ADRESS COMMISION | 包括回扣傭金 |
| IAGW | IF ALL GOING WEL | |
| ICATC/ATC | IF USED ACTUAL TIME TO COUNT | |
| IFO | INTERMEDIATE FUEL OIL | 100秒燃油 |
| IFO/MDO | INTERMEDIATE FUEL OIL/MARINE DIESKL OIL | |
| IGS | INERT GAS SYSTEM | 惰性氣體系統 |
| ILHC | IN LIEU OF HOLD CLEANING | 代替掃艙 |
| ILW | IN LOSS WEIGHT | |
| Imabari | Imabari | 今治 |
| Imari | Imari | 伊萬里 |
| IMM | IMMEDIATELY | 立即 |
| IMO | INTERNATIONAL MARITIME ORGANIZATION | 國際海事組織 |
| IN 2 BOTTOMS | ||
| IN LOW | IN LIEW OF WEIGHING | |
| IN(WITH) REGARD TO | ||
| IN/OUT GEOG ROTN | GEOGRAPHICAL ROTATION | |
| INCL | INCLUDING,INCLUDED | |
| INCLOT | INCLUDING OVERTIME | 包括加班時間 |
| IND | INDUSTRY | |
| INDIC | INDIVATE,INDICATION | |
| INFO | INFORMATION | |
| Innoshima | Innoshima | 因島 |
| INSCE RATE INSURANCE | ||
| INT | INTENDED | |
| INTERTANKO | INTERNATIONAL ASSOCIATION OF INDEPENDENT TANKER OWNERS | 國際獨立油輪船東協會 |
| INTN | INTENTION | |
| INTRST | INTEREST | |
| IORE | IRON ORE | |
| IP | PHILIPPINE | |
| Ishikariwan-Sinko | Ishikariwan-Sinko | 石狩灣新港 |
| Ishinomaki | Ishinomaki | 石卷 |
| ITF | INTERNATIONAL TRAN | WORKERS'FEDERATION |
| ITF | INTERNATIONAL TRANSPORT WORKERS FEDERATION | 國際海運勞工協會 |
| ITIN | ITINERARY | |
| ITINERARY | ||
| Itozaki | Itozaki | 糸崎 |
| ITR | INTHIS REGARD | |
| IUHTTC | IF USED HALF TIME TO COUNT | |
| Iwakuni | Iwakuni | 巖國 |
| IWL | INSTITUTE WARRANTY LIMITS | 協會保證區域限制 |
| IWL | INSTITUTE WARRANTY LIMITS | 協會保證區域限制 |
| Izuhara | Izuhara |
