Russia to hold naval exercise with Iran, Azerbaijan and Kazakhstan in Caspian Sea.

According to information published by Tehran Times on August 31, 2021, Russia's defence ministry said it would hold naval drills in the Caspian Sea with Joshan and Peykan missile launchers from Iran, G-122 and G-124 warships from the Republic of Azerbaijan and Mangistav, and Sari Arka ships from Kazakhstan in early September.
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Sina-class fast attack craft IRIS Paykan (Picture source: Twitter account of Rob Lee)

Joshan is a Sina-class fast attack craft. It was named for a vessel that was sunk by missiles fired from the US warships USS Wainwright and USS Simpson during Operation Praying Mantis in the Persian Gulf on 18 April 1988.

The Iranian missile boat Paykan is an Iranian-made Sina-class fast attack craft. The Sina class is nearly identical to the Kaman class and Paykan and Joshan are both often referred to as members of the Kaman class.

Paykan was Iran's first self-made missile boat and is equipped with two or four C802 SSM (YJ-83) anti-ship missiles, one Fajr-27 76 mm dual-purpose gun and one 40 mm anti-aircraft gun.

Sina is a class of upgraded La Combattante IIa-class fast attack craft developed by Iran.

The YJ-83 is a Chinese subsonic anti-ship cruise missile. It is manufactured by the China Aerospace Science and Industry Corporation Third Academy. The C-802 is the export version of the YJ-83; It is powered by the French TRI 60-2 turbojet and has a range of 65 nautical miles (120 km).