Norwegian Navy hunts an unidentified submarine in Sognefjord
- When
- Where
- Sognefjord, Norway
- Sources
- 1 public source

After residents reported periscope-like objects and engine noise from mid-November 1972, Norway's armed forces hunted a suspected foreign submarine in Sognefjord with ships and helicopters. The defence chief told a closed parliamentary session a submarine had likely been there; none was surfaced.