Deirdre vs Osa
The Deirdre and the Osa are both Patrol vessel classes. The Deirdre displaces 972 tons — 4.7x the Osa's 209 tons. The Deirdre reaches 18 knots vs 42 knots for the Osa. Operational range is 7,000 nautical miles for the Deirdre vs 1,800 for the Osa. The Deirdre carries a crew of 47 vs 28 for the Osa. The Deirdre was produced in 4 units vs 400 for the Osa. The Deirdre was commissioned in 1972, 12 years after the Osa (1960).
| Irish patrol vessel, introduced in 1972, displaces 972 tons, and has a crew of 47. | |
| Origin | 🇮🇪 Ireland |
| Category | Patrol vessel |
| Type | Offshore patrol vessel |
| Manufacturer | Verolme Cork Dockyard |
| Year introduced | 1972 |
| Number built | 4 units |
| Estimated unit price | NA |
| Ex-USSR missile boat, introduced in 1960, reaches speeds of 42 knots, with over 400 units built. | |
| Origin | 🇨🇳 Ex-USSR |
| Category | Patrol vessel |
| Type | Missile boat |
| Manufacturer | Vostochnaya Verf |
| Year introduced | 1960 |
| Number built | 400 units |
| Estimated unit price | NA |
| Displacement | 972 tons ◉ |
| Maximum speed | 18.0 knots ◉ |
| Range | 7,000 nm at 17 knots ◉ |
| Length | 56.1 m ◉ |
| Beam | 10.4 m ◉ |
| Crew | 47 ◉ |
| Propulsion | -- |
| Armament |
|
| Displacement | 209 tons ◉ |
| Maximum speed | 42.0 knots ◉ |
| Range | 1,800 nm at 500 knots ◉ |
| Length | 38.6 m ◉ |
| Beam | 7.6 m ◉ |
| Crew | 28 ◉ |
| 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 |
| Armament |
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Performance Radar Chart
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.