Initial Operational Capability (IOC): 20 November 1976
Total Production: 7
Origin: United Kingdom
Corporations: VT Shipbuilding
Parent System: Niteroi
Initial Operational Capability (IOC): 20 November 1976
Total Production: 7
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Description: The Brazilian Navy Niteroi is a class of light frigates designed and built by Vosper Thornycroft (VT) in the United Kingdom (4) and Brazil (3) between 1972 and 1986. The primary goal of these vessels is two perform anti-submarine warfare (ASW) missions. The propulsion system combines two gas turbines and four diesel engines in a COmbined Diesel And Gas (CODAG) layout developing a top speed of 30 knots and allowing a maximum range in excess of 5,000 nautical miles. The ship's sensor suite includes radar, hull-mounted sonar and variable depth sonar. The ship also features flight deck and hangar for a single Super Lynx or AS350/355 helicopter. The weapon system includes a 114mm naval gun, two Bofors 40mm Mk3 guns, two triple torpedo tubes for Mk 46 torpedoes, four 12.7mm M2 machine guns, anti-submarine rockets, MM40 Exocet anti-ship missiles and Aspide surface-to-air missiles. The Brazilian Navy commissioned seven frigates between 1976 and 1986 with the last one being used for training purposes. These ships were upgraded between the mid-1990s and the mid-2000s with all the seven frigates still in active duty as of January 2018.

Niteroi Specifications

Crew: 217
Number of Aircraft: 1
Number of Engines: 6
Torpedo Tubes: 6
Beam: 13.5 meter (44 foot)
Draft: 5.50 meter (18.0 foot)
Length: 129 meter (424 foot)
Main Gun Caliber: 114 millimeter
Max Range: 5,300 nautical mile (9,816 kilometer)
Boost Power: 42 MW (56,300 shp)
Cruise Power: 13 MW (17,426 bhp)
Total Combined Power: 55 MW (73,727 hp)
Cruise Speed: 22 knot (11.3 mps)
Economical Speed: 17 knot
Top Speed: 30 knot (15.4 mps)
Mission Endurance: 45 day
Full Displacement: 3,707 ton
Standard Displacement: 3,355 ton
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

Operators & Related Equipment

Jan 20187

Grand Total 71
Cannons & Gear
40mm Mk3x2
Defensive Weapons
Mark 46x6
Offensive Weapons
MM40 Exocet
Support Aircraft
Super Lynx Mk21Ax1

Niteroi Ship Listing

SerialNameStatusLaunch DateCommissionDecommission
F40 Niteroi-20 Nov 1976-
F41 Defensora-3 Mar 1977-
F42 Constituicao-31 Mar 1978-
F43 Liberal-18 Nov 1978-
F44 Independencia-3 Sep 1979-
F45 Uniao-12 Sep 1980-
U27 Brasil-21 Aug 1986-

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