Reliance vs Viana do Castelo

United States patrol vessel, introduced in 1983, is propelled by two ALCO V-18 diesel engines.
Origin 🇺🇸 United States
Category Patrol vessel
Type Medium endurance cutter
Manufacturer Robert Derecktor Shipyard Inc.
Year introduced 1983
Number built 13 units
Estimated unit price NA
Portuguese offshore patrol vessel, introduced in 2010, displaces 1,850 tons and has a crew of 35.
Origin 🇵🇹 Portugal
Category Patrol vessel
Type Offshore patrol vessel
Manufacturer Estaleiros Navais de Viana do Castelo
Year introduced 2010
Number built 4 units
Estimated unit price NA
Displacement 1,829 tons â—‰
Maximum speed 19.0 knots â—‰
Range 9,900 nm
Length 82.0 m â—‰
Beam 12.0 m â—‰
Crew 100 â—‰
Propulsion 2 × turbo-charged ALCO V-18 diesel engines; 2 × 9-foot-diameter controllable pitch propellers
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
Displacement 1,850 tons â—‰
Maximum speed 21.0 knots â—‰
Range NA
Length 83.1 m â—‰
Beam 13.0 m â—‰
Crew 35 â—‰
Propulsion 2 x Wärtsilä diesel engines (3,900 kW (5,200 hp) each), 2 electric engines (200 kW (270 hp) each)
Armament
  • 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

Performance Radar Chart

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.