The Niagara is a mid-size starship with its 3 Galaxy type nacelles.
Type Fast Cruiser
Unit Run U.S.S. Niagra
U.S.S. Princeton, NCC-59804
U.S.S. Wellington, NCC-28473
plus 141 vessels built in total. 52 were lost during Wolf 359 and the Dominion war, 92 remain in service.
Commissioned 2336 - 2349
Dimensions
Length 443 m
Width 260 m
Height 152 m
Decks 23 excluding nacelles
Mass 2,800,000 tons
Crew 520
Warp Speeds
Normal Cruise Warp 7
Maximum Cruise Warp 9
Maximum Rated Warp 9.4 for twelve hours
Armament 6 x Type VIII Phaser arrays, total output 22,500 TeraWatts 2 x Standard photon torpedo tubes + 80 torpedoes Defence Systems High capacity shield system, total capacity 1,647,000 TeraJoules
Standard Duranium/Tritanium double hull plus 0.4 cm High Density armour
Standard level Structural Integrity Field
Strength Indices (Galaxy Class = 1,000)
Beam Firepower 450
Torpedo Firepower 250
Weapon Range & Accuracy 755
Shield Strength 610
Hull Armour 140
Speed 890
Combat Manoeuvrability 2,700
Overall Strength Index 480
Diplomatic Capability Grade 4
Expected Lifetime 50 years
Refit Cycle
Minor 1 year
Standard 50years
Major 25 years

The Niagara design was fielded shortly after the Ambassador class, and originally showed a high degree of commonality with that class. Then Engineering hull and Nacelles were closely based on those of the Ambassador, and the ship is fitted with Type 8 phaser arrays and a pair of photon torpedo tubes which, combined with its speed and agility, make it a formidable opponent in battle. The Primary Hull shows elements of the Ambassador design, but is also clearly a forerunner of the later Galaxy/Nebula/New Orleans family. Like all Starfleet ships its role is primarily one of peaceful exploration and diplomacy, and the Niagara has served well in these arenas. The ship is fitted with Grade 4 diplomatic facilities, and as such is capable of handling multi-planetary conferences involving several high level diplomats and their staffs. In the scientific areana the ships high average speed allows it to cover greater areas than would be normal for a ship of this size, while the sensor fit on commissioning was of a generaly more advanced type than that of the Ambassadors.