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Deirdre vs Osa

Deirdre vs Osa at a glance — displacement 972 vs 209 tons, length 56 vs 38 m, speed 18 vs 42 knots, crew 47 vs 28.

Specifications
Deirdre Osa
Origin 🇮🇪 Ireland 🇷🇺 Ex-USSR
Category Patrol vessel Patrol vessel
Type Offshore patrol vessel Missile boat
Manufacturer Verolme Cork Dockyard Vostochnaya Verf
Year introduced 1972 1960
Number built 4 units 400 units
Estimated unit price NA NA
Displacement 972 tons 209 tons
Maximum speed 18.0 knots 42.0 knots
Range 7,000 nm at 17 knots 1,800 nm at 14 knots
Length 56.1 m 38.6 m
Beam 10.4 m 7.6 m
Crew 47 28
Performance Radar Chart
Armament & Systems
Deirdre Osa
Armament
  • 1 × 40 mm/60 Bofors
  • 2 × 12.7 mm machine guns
  • 2 × AK-230 twin 30 mm CIWS (2,000 rounds)
  • 4 × P-15 Termit (SS-N-2 Styx) anti-ship missiles
Propulsion -- 3 × 4,000 hp (3.0 MW) M-503G diesel engines (205) or 3 × 5,000 hp (3.7 MW) M-504B diesel engines (205U onwards); 3 shafts
Change comparison vs
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Frequently Asked Questions

Which has greater displacement, the Deirdre-class or Osa-class?
The Deirdre-class has greater displacement at 972 tons compared to the Osa-class's 209 tons.
Which is faster, the Deirdre-class or Osa-class?
The Osa-class is faster with a maximum speed of 42 knots compared to the Deirdre-class's 18 knots.
Which has longer range, the Deirdre-class or Osa-class?
The Deirdre-class has a longer range at 7,000 nautical miles compared to the Osa-class's 1,800 nautical miles.
Which is longer, the Deirdre-class or Osa-class?
The Deirdre-class is longer at 56.1 meters compared to the Osa-class's 38.6 meters.
How many crew members do the Deirdre-class and Osa-class have?
The Deirdre-class has a larger crew complement of 47 compared to the Osa-class's 28 crew members.
Which has been built in greater numbers, the Deirdre-class or Osa-class?
The Osa-class has been built in greater numbers with 400 vessels compared to 4 vessels of the Deirdre-class.