Related time notes
- Royal Navy Survey Ships: A History - Patreon 55 (Long Patrol)29:14HMS Challenger confirms Challenger DeepChapter
- Patreon 55: History of Survey Ships in the Royal Navy1:18:44HMS Challenger as survey ship, escort, and test bedChapter
- Patreon 55: History of Survey Ships in the Royal Navy2:39:48Why the Victorian Challenger was an expedition shipQ&A
- The Challenger Expedition (Long Patrol)16:01HMS Challenger's size, propulsion, and reduced armamentNotable Point
- The Challenger Expedition (Long Patrol)20:00How Challenger made room for science at seaNotable Point
- Britain of the 1980s: Long Patrol P3a/7 Keith Speed (Continued)12:09HMS Challenger and deep-seabed operationsNotable Point
- Patreon 17 "The Royal Navy’s Strategic Role in 1980s NATO" as suggested by Joseph Sullivan2:18:34HMS Challenger and the breadth of naval procurementNotable Point