FORCETALLY
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At a glance
Bay-class patrol boatlarger figure on 0 of 2
Osa-class missile boatlarger 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 20 knots (37 km/h; 23 mph)
Single source1,000 nmi (1,900 km; 1,200 mi) at 20 knots (37 km/h; 23 mph)[source]
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]
3 × M-503G diesel engines (205) 3 ×
Single sourceM-504B diesel engines (205U onwards)
Single source3 × 4,000 hp (3.0 MW) M-503G diesel engines (205) 3 × 5,000 hp (3.7 MW) M-504B diesel engines (205U onwards)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Configuration
| Specification | Bay-class patrol boat | Osa-class missile boat |
|---|---|---|
| Displacement | 134 tons[source] | Osa 1 171.5 (with M-504B – 184) tons standard 209 (with M-504B – 226) tons full load Osa 2 192 tons standard 235 tons full load[source] |
| Name | Bay class[source] | Osa class[source] |
| Builders | Austal[source] | Vostochnaya Verf[source] |
| Operators | Australian Border Force Marine Unit Sri Lanka Navy Malaysian Maritime Enforcement Agency[source] | see below[source] |
| In service | 1999–present[source] | 1960–present[source] |
| Completed | 400+[source] | |
| Active | — | |
| Retired | — | |
| Type | Patrol boat[source] | Missile boat[source] |
| Propulsion | 2 × MTU 16V 2000 M70 diesel engines 1 VosperThornycroft bow thruster[source] | 3 shafts[source] |
| Boats & landing craft carried | 2 × Wiltrading Pursuit 640 vessels (USLC-2C Survey)[source] | — |
| Sensors & processing systems | Radar: Surface search: Racal Decca; E/F and I bands Sonar: Wesmar SS 390E dipping sonar[source] | 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] |
| Armament | 1 × 7.62 mm general purpose machine gun[source] | 2 × AK-230 twin 30 mm CIWS (2,000 rounds) 4 × P-15 Termit (SS-N-2 Styx) anti-ship missiles[source] |
| Country of origin | Australia[source]Bay-class patrol boat · origin explicitly stated in the linked current national-inventory row; no inference from operator or shipyard | Soviet Union[source] |
| Preceded by | — | Komar-class missile boat[source] |
| Succeeded by | — | Tarantul-class corvette[source] |
| Subclasses | — | Osa 1, Osa 2[source] |
| Built | — | 1960–1973[source] |
| Endurance | — | 5 days[source] |
| Electronic warfare & decoys | — | Nikhrom-RRM IFF/ESM[source] |
| Alternative designation | — | Osa class[source] |