Where can I watch “Expedition Unknown” Season 17 Episode 4 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

Do I need to watch earlier episodes before “The Nazi's Lost Super Sub”?

Watching earlier episodes in season 17 helps you follow the plot and character arcs leading into this episode.

Watch Expedition Unknown Season 17 Episode 4 Online

“The Nazi's Lost Super Sub” — Watch "Expedition Unknown" Season 17 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.

Nov 26, 2025 Season 17 Episode 4 43 min TV-14

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Expedition Unknown Season 17

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Season 17 Episode 4 — Aired on Nov 26, 2025 • runs about 43 minutes.

Notable cast/guest names in this episode include Josh Gates.

This page includes 1 official still(s) (when available) plus legal availability links.

Looking for “watch Expedition Unknown Season 17 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Josh dives the frigid waters of the Baltic Sea in search of a revolutionary Nazi submarine: the V-80. Hitler ordered it scuttled to prevent the Allies from learning its secrets. Now, Josh risks it all to bring the prototype to the surface.