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Submarines ·
Sea · operated by 1 country on the map · 2 units on record
The Paltus class (Project 1851.1) is a small Russian nuclear-powered special-purpose midget submarine for deep-sea and seabed operations. Two were completed, about 30 meters long, rated below 1,200 meters depth; both serve with Russia's 29th special submarine squadron.

| Country | Branch | Quantity | |
|---|---|---|---|
| Russian Navy | 2 | on the map → |
Special-purpose midget submarines.