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Osa vs Rihtniemi

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Specifications
Osa Rihtniemi
Origin 🇷🇺 Ex-USSR 🇫🇮 Finland
Category Patrol vessel Patrol vessel
Type Missile boat Patrol boat
Manufacturer Vostochnaya Verf --
Year introduced 1960 1957
Number built 400 units NA
Estimated unit price NA NA
Displacement 209 tons 110 tons
Maximum speed 42.0 knots 15.0 knots
Range 1,800 nm at 500 knots NA
Length 38.6 m 31.1 m
Beam 7.6 m 5.7 m
Crew 28 20
Performance Radar Chart
Armament & Systems
Osa Rihtniemi
Armament
  • 2 × AK-230 twin 30 mm CIWS (2,000 rounds)
  • 4 × P-15 Termit (SS-N-2 Styx) anti-ship missiles

1 × 40 mm Bofors 1 × 20 mm Madsen 1 × Squid ASW mortar
Propulsion 3 × 4,000 hp (3.0 MW) M-503G diesel engines (205) or 3 × 5,000 hp (3.7 MW) M-504B diesel engines (205U onwards); 3 shafts 51, 52: 2 Mercedes-Benz Diesel; 1,044 kW 53, 54, 55: 2 Mercedes-Benz Diesel; 1,864 kW

Overview

The Osa and the Rihtniemi are both Patrol vessel classes.

Displacement is 209 tons for the Osa vs 110 tons for the Rihtniemi. The Osa reaches 42 knots vs 15 knots for the Rihtniemi. The Osa carries a crew of 28 vs 20 for the Rihtniemi.

The Osa was commissioned in 1960, 3 years after the Rihtniemi (1957).

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Frequently Asked Questions

Which has greater displacement, the Osa-class or Rihtniemi-class?
The Osa-class has greater displacement at 209 tons compared to the Rihtniemi-class's 110 tons.
Which is faster, the Osa-class or Rihtniemi-class?
The Osa-class is faster with a maximum speed of 42 knots compared to the Rihtniemi-class's 15 knots.
Which has longer range, the Osa-class or Rihtniemi-class?
The Osa-class has a longer range at 1,800 nautical miles compared to the Rihtniemi-class's 0 nautical miles.
Which is longer, the Osa-class or Rihtniemi-class?
The Osa-class is longer at 38.6 meters compared to the Rihtniemi-class's 31.1 meters.
How many crew members do the Osa-class and Rihtniemi-class have?
The Osa-class has a larger crew complement of 28 compared to the Rihtniemi-class's 20 crew members.