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Róisín vs Viana do Castelo

Róisín vs Viana do Castelo at a glance — displacement 1,500 vs 1,850 tons, length 78 vs 83 m, speed 23 vs 21 knots, crew 44 vs 35.

Specifications
Róisín Viana do Castelo
Origin 🇬🇧 United Kingdom 🇵🇹 Portugal
Category Patrol vessel Patrol vessel
Type Offshore patrol vessel Offshore patrol vessel
Manufacturer Appledore Shipbuilders Estaleiros Navais de Viana do Castelo
Year introduced 1999 2010
Number built 2 units 4 units
Estimated unit price NA NA
Displacement 1,500 tons 1,850 tons
Maximum speed 23.0 knots 21.0 knots
Range 6,000 nm NA
Length 78.8 m 83.1 m
Beam 14.0 m 13.0 m
Crew 44 35
Performance Radar Chart
Armament & Systems
Róisín Viana do Castelo
Armament
  • 1 × 76 mm OTO Melara gun
  • 2 × 20 mm Rheinmetall cannon
  • 2 × 12.7 mm HMG
  • 4 × 7.62 mm GPMG
  • 1 × 30 mm Oto Melara Marlin WS
  • 2 × M2 Browning machine gun
  • 2 x MG 3 machine gun
  • 2 x launching systems for MK55 Mod 2 mines
  • 1 x Mark 32 torpedo tube
  • 2 x Protector RWS
Propulsion 2 × Wärtsilä medium speed diesels, 2 × 5,000 kW (6,700 hp) 2 x Wärtsilä diesel engines (3,900 kW (5,200 hp) each), 2 electric engines (200 kW (270 hp) each)
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Frequently Asked Questions

Which has greater displacement, the Róisín-class or Viana do Castelo-class?
The Viana do Castelo-class has greater displacement at 1,850 tons compared to the Róisín-class's 1,500 tons.
Which is faster, the Róisín-class or Viana do Castelo-class?
The Róisín-class is faster with a maximum speed of 23 knots compared to the Viana do Castelo-class's 21 knots.
Which has longer range, the Róisín-class or Viana do Castelo-class?
The Róisín-class has a longer range at 6,000 nautical miles compared to the Viana do Castelo-class's 0 nautical miles.
Which is longer, the Róisín-class or Viana do Castelo-class?
The Viana do Castelo-class is longer at 83.1 meters compared to the Róisín-class's 78.8 meters.
How many crew members do the Róisín-class and Viana do Castelo-class have?
The Róisín-class has a larger crew complement of 44 compared to the Viana do Castelo-class's 35 crew members.
Which has been built in greater numbers, the Róisín-class or Viana do Castelo-class?
The Viana do Castelo-class has been built in greater numbers with 4 vessels compared to 2 vessels of the Róisín-class.