The SS-N-16 Stallion was a Soviet 650 mm anti-ship missile that was deployed between 1979 and 1981. The name is a combination of the American designation of SS-N-16 and the NATO term of Stallion for Soviet RU-100s.

It refers to either

1. RPK-6 Vodopad (РПК-6 Водопад, "waterfall") - Surface ship version
   or
   
2. RPK-7 Vorobei (РПК-7 Воробей, "sparrow") - Submarine version

Both systems are firing 82R torpedo or 90R nuclear depth charge in 53.3 cm version and 83R torpedo carrying or 86R nuclear depth charge in 65 cm version.

Serving dual roles, the missile could be outfitted as either an RU-100 Veder, a 20 kiloton nuclear warhead for use against surface ships, or alternatively an RU-100 Vodopad (Водопад, waterfall), a Type-40 torpedo for use against submarines.

Its increased range of up to 120 kilometres offered an impressive boost over its predecessor the SS-N-15 Starfish, which could only reach half the distance; although it meant refitting all the old 533mm torpedo tubes to carry this new 650mm torpedo.

Operators

• Soviet Navy

Specifications

Dimensions:

• Length: 6.5 m (21 ft 4 in)
• Diameter: 25.5 in
• Weight: 2150 kg (4,740 lbs)

Performance:

• Speed: Mach 1.5
• Range: 120 km (74.6 mi)

Payload:

• 200-kT nuclear depth bomb or 533 mm (21 inch) torpedo