Credit
Photographer's Name: PH2 Beech · Public domain · Resized · Public domain · Source ↗ · Modified
FORCETALLY
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At a glance
Osa-class missile boatlarger figure on 0 of 2
Saryu-class patrol vessellarger figure on 2 of 2
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
at 14 knots (26 km/h)
Single sourceat 30 knots (56 km/h)
Single sourceat 35 knots (65 km/h)
Single source1,800 nmi (3,300 km) at 14 knots (26 km/h), 800 nmi (1,500 km) at 30 knots (56 km/h), 500 nmi (930 km) at 35 knots (65 km/h)[source]
at 16 kn (30 km/h)
Single source6,000 nmi (11,000 km) at 16 kn (30 km/h)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Configuration
| Specification | Osa-class missile boat | Saryu-class patrol vessel |
|---|---|---|
| Name | Osa class[source] | Saryu class[source] |
| Builders | Vostochnaya Verf[source] | Goa Shipyard Limited[source] |
| Operators | see below[source] | Indian Navy Sri Lanka Navy[source] |
| Preceded by | Komar-class missile boat[source] | Sukanya class[source] |
| Succeeded by | Tarantul-class corvette[source] | Shachi class (2017) (cancelled) Shachi class (2026)[source] |
| Subclasses | Osa 1, Osa 2[source] | — |
| Built | 1960–1973[source] | — |
| In service | 1960–present[source] | — |
| Completed | 400+[source] | |
| Type | Missile boat[source] | Offshore patrol vessel[source] |
| Propulsion | 3 shafts[source] | — |
| Endurance | 5 days[source] | — |
| Sensors & processing systems | MR-331 Rangout (Square Tie) radar Klyon fire-control system for P-15 Termit Nickel IFF MR-104 Rys (Drum Tilt) fire-control radar for AK-230 ARP-58SV radio direction finder[source] | Sperry Bridgemaster I-band navigation radar EON-51 electro-optical FCS[source] |
| Electronic warfare & decoys | Nikhrom-RRM IFF/ESM[source] | Sanket Mk III Electronic Support System Communication Intelligence System ELK 7036 4 × Kavach chaff launchers[source] |
| Armament | 2 × AK-230 twin 30 mm CIWS (2,000 rounds) 4 × P-15 Termit (SS-N-2 Styx) anti-ship missiles[source] | 1 × 76 mm/62 Oto Melara gun 2 × 30 mm/65 AK-630 CIWS[source] |
| Alternative designation | Osa class[source] | — |
| Country of origin | Soviet Union[source] | India[source] |
| In commission | — | 2013 – present[source] |
| Planned | — | |
| Active | — | |
| Aircraft carried | — | 1 × HAL Dhruv[source] |
| Reported operators | — |
|