**NOT A TANk**
Here -> hisutton.com/Bayonet-Underw…
Bayonet underwater drone (UUV) with tracks can crawl out of the sea. Quite a useful capability…
A few other tracked submarines /UUVs to briefly mentions.
Firstly, in World War Two German engineers built a tracked midget sub. The idea was to launch /recover itself from a slipway rather than drive along the bottom of the seabed
During the Cold War, the #USNavy had the NR-1 spy sub which could drive along the bottom. Wheels not tracks though.
There were several reports of strange tracks on the seabed in Sweden /Norway during the Cold War.
Culprit never proven (although certain Russian diving vehicles are plausible)
See hisutton.com/Russian_Tracke…
And hisutton.com/Seliger.html
There have also been several uncrewed crawlers. Meet the Soviet MTK 200 for “scientific research”
And various civilian ones for heavy engineering
But the new ones from Bayonet are much more modern
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