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Deirdre vs Róisín

Deirdre vs Róisín at a glance — displacement 972 vs 1,500 tons, length 56 vs 78 m, speed 18 vs 23 knots, crew 47 vs 44.

Specifications
Deirdre Róisín
Origin 🇮🇪 Ireland 🇬🇧 United Kingdom
Category Patrol vessel Patrol vessel
Type Offshore patrol vessel Offshore patrol vessel
Manufacturer Verolme Cork Dockyard Appledore Shipbuilders
Year introduced 1972 1999
Number built 4 units 2 units
Estimated unit price NA NA
Displacement 972 tons 1,500 tons
Maximum speed 18.0 knots 23.0 knots
Range 7,000 nm at 17 knots 6,000 nm
Length 56.1 m 78.8 m
Beam 10.4 m 14.0 m
Crew 47 44
Performance Radar Chart
Armament & Systems
Deirdre Róisín
Armament
  • 1 × 40 mm/60 Bofors
  • 2 × 12.7 mm machine guns
  • 1 × 76 mm OTO Melara gun
  • 2 × 20 mm Rheinmetall cannon
  • 2 × 12.7 mm HMG
  • 4 × 7.62 mm GPMG
Propulsion -- 2 × Wärtsilä medium speed diesels, 2 × 5,000 kW (6,700 hp)
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Frequently Asked Questions

Which has greater displacement, the Deirdre-class or Róisín-class?
The Róisín-class has greater displacement at 1,500 tons compared to the Deirdre-class's 972 tons.
Which is faster, the Deirdre-class or Róisín-class?
The Róisín-class is faster with a maximum speed of 23 knots compared to the Deirdre-class's 18 knots.
Which has longer range, the Deirdre-class or Róisín-class?
The Deirdre-class has a longer range at 7,000 nautical miles compared to the Róisín-class's 6,000 nautical miles.
Which is longer, the Deirdre-class or Róisín-class?
The Róisín-class is longer at 78.8 meters compared to the Deirdre-class's 56.1 meters.
How many crew members do the Deirdre-class and Róisín-class have?
The Deirdre-class has a larger crew complement of 47 compared to the Róisín-class's 44 crew members.
Which has been built in greater numbers, the Deirdre-class or Róisín-class?
The Deirdre-class has been built in greater numbers with 4 vessels compared to 2 vessels of the Róisín-class.