Enlistment district
| Name | Details |
|---|---|
| M/T LPG Igloo Norse | Build year 1982 |
| M/T LPG Igloo Polar | Build year 1982 |
| M/T LPG Igloo Tor | Build year 1989 |
| M/S I. K. Ward | Build year 1929 |
| M/S Ilmatar | Build year 1964 |
| M/S Inayama | Build year 1964 |
| M/S Indien | Build year 1920 |
| T/T Ingrid | Build year 1918 |
| D/S Ingrid | Build year 1920 |
| M/S Ingrid K | Build year 1962 |
| M/T Ingrid K | Build year 1938 |
| M/T Innerøy | Build year 1936 |
| M/S Insco Lillevann | Build year 1957 |
| M/S Irish Provider | Build year 1964 |
| D/S Iron Baron | Build year 1911 |
| Einar Fredrik Conradi Isachsen | Born June 23, 1905 in Larvik |
| Rolf William Isachsen | Born November 16, 1902 in Oslo |
| Oskar Marius Isaksen | Born March 21, 1898 in Oslo |
| Per Marius Isaksen | Born November 11, 1909 in Skien |
| M/T Iselin | Build year 1939 |
| Odd Magnus Isene | Born October 1, 1916 in Oslo |
| M/T Ishav | Build year 1951 |
| M/S Island Venture | Build year 1972 |
| M/T Italia | Build year 1939 |
| M/S Italian | Build year 1953 |