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Oslo-class frigate
Photo: Raylondal · Wikimedia Commons · CC BY-SA 3.0
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Oslo-classfrigate

Frigates · Norway · 1964
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Oslo-classfrigate

Oslo-class frigate
Oslo-class frigate Photo: Raylondal · Wikimedia Commons · CC BY-SA 3.0
* Absolute score — assessed within category · no era adjustment
Anti-Surface Capability
45
Air Defence
30
ASW Capability
50
Sensors
40
Versatility
55
Endurance
60
Survivability
50
Aviation
20
Technology
35
Cost-Effectiveness
70
Origin Norway
ManufacturerKarljohansvern
CategoryFrigates
EraCold War
In service1964–1966
Operators1 countries
Quantity5
Data Quality83%
MASS(Military Archive Scoring System)
45
Frigates MASS Rating
58/65
Cold War
147/245
All-Time
Frigates · 10 axes scored
Anti-Surface Capability
45
Air Defence
30
ASW Capability
50
Sensors
40
Versatility
55
Endurance
60
Survivability
50
Aviation
20
Technology
35
Cost-Effectiveness
70
ⓘ Regardless of era, the same scoring system applies to all units in the frigates category.
01 / Overview
Oslo-class frigate
Category
Country
Prime contractor
Production
1964–1966
Quantity
5
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
FRIGATES · COLD WAR
58
PERFORMANCE/PRICE
76
UNIT COST (2025 USD)
—
45
frigates category
ⓘ Performance/Price and MASS score are computed across all units in the frigates category, regardless of era.
02 / Specs & Design
◎Identification7MOD.7
  • Ship TypeFrigate
  • Builder / ShipyardNavy Main Yard, Karljohansvern, Horten
  • Laid Down1964
  • Launched1965
  • Commissioned1966
  • Ships in Class5
  • In ServiceYes
◈Displacement3MOD.3
  • Light Displacement1,735 t
  • Standard Displacement1,735 t
  • Full Load Displacement2,100 t
▣Dimensions3MOD.3
  • Length (overall)96.6 m
  • Beam11.2 m
  • Draft5.5 m
◇Complement1MOD.1
  • Total Complement129
◆Propulsion9MOD.9
  • PropulsionSteam Turbine
  • Arrangement (CODAG/COGAG…)Twin steam boilers, one high pressure and one low pressure steam turbine
  • Number of Engines1
  • Shaft Power14,914 kW
  • Shafts / Screws1
  • Top Speed25 kn
  • Cruise Speed15 kn
  • Range3,900
  • Nuclear-PoweredNo
▤Gun Armament4MOD.4
  • Main Gun3" (76mm) cannon
  • Main Gun Calibre76 mm
  • Main Gun Count2
  • Secondary GunsBofors 40mm/70, 20mm Rheinmetall, 12.7mm
⬢Missile Armament6MOD.6
▲Underwater Warfare4MOD.4
◎Aviation5MOD.5
◈Sensors & Combat Systems7MOD.7
◇Fleet Status8MOD.8
  • Completed5
  • Active0
  • Under Construction0
  • Planned5
  • Cancelled0
  • Lost1
  • Retired3
  • Preserved1
03 / History
SERVICE LIFESPANStill in Service
  1. 1962Entered service
  2. 1964Production started
  3. 1966Production ended
62
years in service
2
years in production
5
units produced
1
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
Operator Inventory1country · 8units
8active
📖 TERMS ON THIS PAGE4terms
Anti-Submarine Warfare. Capability to detect, track, and engage submarines.
Military action involving the use of electromagnetic spectrum to disrupt, deceive, or destroy enemy electronic systems.
Sonar system installed on the hull of a ship, used for underwater detection and navigation by emitting and receiving sound waves.
A mechanical device that converts steam pressure into rotational energy, used to drive shipboard generators or propulsion systems.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Frigates entry →