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Reliance vs Viana do Castelo

Reliance vs Viana do Castelo at a glance — displacement 1,829 vs 1,850 tons, length 82 vs 83 m, speed 19 vs 21 knots, crew 100 vs 35.

Specifications
Reliance Viana do Castelo
Origin 🇺🇸 United States 🇵🇹 Portugal
Category Patrol vessel Patrol vessel
Type Medium endurance cutter Offshore patrol vessel
Manufacturer Robert Derecktor Shipyard Inc. Estaleiros Navais de Viana do Castelo
Year introduced 1983 2010
Number built 13 units 4 units
Estimated unit price NA NA
Displacement 1,829 tons 1,850 tons
Maximum speed 19.0 knots 21.0 knots
Range 9,900 nm NA
Length 82.0 m 83.1 m
Beam 12.0 m 13.0 m
Crew 100 35
Performance Radar Chart
Armament & Systems
Reliance Viana do Castelo
Armament
  • 1 × OTO Melara Mark 75 76 mm/62 caliber naval gun
  • 2 × .50 caliber (12.7 mm) machine guns
  • 1 x Mk38 Mod 3 25mm machine gun
  • 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 × turbo-charged ALCO V-18 diesel engines; 2 × 9-foot-diameter controllable pitch propellers 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 Reliance-class or Viana do Castelo-class?
The Viana do Castelo-class has greater displacement at 1,850 tons compared to the Reliance-class's 1,829 tons.
Which is faster, the Reliance-class or Viana do Castelo-class?
The Viana do Castelo-class is faster with a maximum speed of 21 knots compared to the Reliance-class's 19 knots.
Which has longer range, the Reliance-class or Viana do Castelo-class?
The Reliance-class has a longer range at 9,900 nautical miles compared to the Viana do Castelo-class's 0 nautical miles.
Which is longer, the Reliance-class or Viana do Castelo-class?
The Viana do Castelo-class is longer at 83.1 meters compared to the Reliance-class's 82.0 meters.
How many crew members do the Reliance-class and Viana do Castelo-class have?
The Reliance-class has a larger crew complement of 100 compared to the Viana do Castelo-class's 35 crew members.
Which has been built in greater numbers, the Reliance-class or Viana do Castelo-class?
The Reliance-class has been built in greater numbers with 13 vessels compared to 4 vessels of the Viana do Castelo-class.