

The p.865 'Piranha' midget submarine was a dedicated Spetsnaz special operations craft capable of delivering 6 frogmen to a target over 400 miles from its base.





Original artwork - CLICK for HIGH-RESOLUTION (2500px) image.









The type was designed at the famous Malachite design bureau by Chief designer Chief Designer L.V.Chernopyatov in the 1970s and entered limited service in the late 1980s. Of classic Soviet double-hull construction, the inner hulls were built from Titanium. After protracted development the two units built were in and out of service during the 1990s.







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A rare photo showing the double-hull construction with smaller inner hull encased in a frame. The panels on the outer hull are missing.









Victims of the defense cuts of the 1990s, both hulls were decommissioned and scrapped:





Specifications

Length: 28.2 meters

Beam: 4.74 meter

Displacement: 218 tons surfaced, 287tns submerged

Speed: Maximum 6.28 kts surfaced, 6.5kts submerged

Operating depth: 180m (200m max)

Endurance : 10 days, 603nm at cruising speed of 4kts surfaced, 260nm at 4kts submerged

Armament: (inner tubes) 2 x 533mm (21") torpedo tubes for sub-size 400mm Latouche anti-ship torpedoes which swim out.

SDVs: (outer tubes) 2 x Sirena-UM Swimmer Delivery Vehicles, or 6-8 'Proton' diver propulsion devices

Crew: 3

Special Forces: 6







A heavily camouflaged Pr.865 Piranha prior to launch.





As well as Sirena SDVs, the payload tubes could accommodate four Proton Diver Propulsion Vehicles (DPVs).



Successor designs



Piranha-T - small attack submarine variant with mix of 533mm and 400mm torpedo tubes. Limited diver capability (possibly exit via torpedo tubes).







U-130 - smaller dual-role attack and special forces submarine. Retains diver lock-out chamber with moon pool







Piranha-2 - updated special forces submarine. Extended hull may allow AIP (air-independent propulsion). Appears to sacrifice 533mm torpedo tubes for 400mm which would preclude the Sirena-UME SDV and some DPVs











Piranha-M - very few details.









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