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Best Ships, submarines & maritime videos, as recommended on Hacker News

19 videos about ships, submarines & maritime that Hacker News commenters keep recommending, mentioned between 2014 and 2026. Mostly explainer, documentary, tutorial. Channels that come up most: SmarterEveryDay, Wendover Productions, NathanielsCAD, NFB. Sorted by how consistently HN recommended them over the years.

The most recommended is How Do Nuclear Submarines Make Oxygen?- Smarter Every Day 251: Go-to link when oxygen candles, CO2 capture or submarine air quality come up.