| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| Stålbark Kirsten | 1891 | Norway | ||
| D/S Kis | 1890 | Norway | ||
| Torpedobåt Kjell | 1912 | Norway | Hijacked, 1940-4-9 | |
| D/S Klar | 1884 | Norway | ||
| M/S Klaus | 1913 | Norway | ||
| D/S Klem | 1911 | Norway | ||
| D/S Klo II | 1912 | Norway | ||
| D/S Klosterfos | 1908 | Norway | ||
| D/S Knarwater | 1883 | Norway | ||
| D/S Knatten | 1892 | Norway | ||
| D/S Knoll | 1916 | Norway | ||
| D/S Knut Hilde | 1915 | Norway | ||
| D/S Knut Jarl | 1898 | Norway | ||
| D/S Knut Jarl | 1909 | Norway | ||
| D/S Knut Skaaluren | 1900 | Norway | ||
| D/S Knysna | 1913 | Norway | ||
| D/S Knøl | 1911 | Norway | ||
| Skonnert 3 master Kodan | 1900 | Norway | ||
| D/S Kolaastind | 1888 | Norway | ||
| D/S Kolbiøn | 1898 | Norway | ||
| D/S Kolbjørn | 1898 | Norway | ||
| D/S Kolsdal | 1909 | Norway | ||
| D/S Komet | 1912 | Norway | Attacked from air, 1940-6-17 | |
| Fullrigger Komet | 1892 | Norway | ||
| D/S Kong Alf | 1884 | Norway |