Related time notes
- HMVS Cerberus: KSS1 S4 Comment Response2:39Cerberus's surviving hull is collapsingNotable Point
- Bittern Class: The Foundation Stone of the British WWII ASW efforts - Key Ship Series 5, Episode 1021:44Bittern's wreck combines oil pollution with wartime ammunition hazardsNotable Point
- Brummer Class (1915): Long Patrol (Year of the Cruiser)19:11Brummer remains beneath Scapa FlowNotable Point