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Róisín vs Viana do Castelo

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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)

Overview

The Róisín and the Viana do Castelo are both Patrol vessel classes.

Displacement is 1,500 tons for the Róisín vs 1,850 tons for the Viana do Castelo. The Róisín reaches 23 knots vs 21 knots for the Viana do Castelo. The Róisín carries a crew of 44 vs 35 for the Viana do Castelo.

The Róisín was produced in 2 units vs 4 for the Viana do Castelo. The Róisín was commissioned in 1999, 11 years before the Viana do Castelo (2010).

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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.