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Manned Submersibles ·
Sea · operated by 1 country on the map · 2 units on record
A free-flooding ('wet') mini-submarine used by US Navy SEALs to covertly transport swimmers and gear, in service since 1983 and built by The Columbia Group. The improved Mark 8 Mod 1 has an aluminum hull, roughly twice the range and 1.5x the speed of its predecessor, carrying two crew plus four swimmers.

| Country | Branch | Quantity | |
|---|---|---|---|
| US Navy | 2 | on the map → |
SEAL Delivery Vehicle.