Oslo class

## SPACECRAFT CLASS

The ***Oslo*-class** was a type of starship developed by Starfleet in the late 24th century. It was derived from the *Norway*-class design.

## History

As tensions rose in the Alpha and Beta Quadrants after the supernova that destroyed Romulus in 2387, Starfleet Command issued a directive to the Corps of Engineers to develop and adapt starship designs with increased combat and defensive capabilities. Applying many tactical elements of the *Akira*-class heavy cruiser to the profile of the *Norway*-class, Starfleet engineers developed the *Oslo*-class, named for a vessel lost during the Dominion War.

The shipwrights searched for small, but efficient warp drive units to implement in the design. Eventually, they turned to Salduro Propulsion Industries' third iteration of their AA-series Dilithium-Energized Variable Warp Drive Unit. These engines were being used on refits of the *Nova*-class and when paired with RamJet's Mk 12 Matter/Anti-Matter Reaction Assembly in theoretical trials provided the *Oslo* design with the ability to maintain its maximum warp factor than any other ship in the fleet. The downside was that the highest sustained speed achieved in simulations was Warp 9.75. Project engineers felt that the trade-off was worth the limitation and Starfleet Command eventually agreed when they approved the starship design.

The class prototype began construction at the New Aberdeen Shipyards in 2389. Though there was a minor setback with elements of the electro-plasma system in early 2391, the project remained on schedule and the USS *Oslo* entered trials in June 2392. A year later the vessel was official commissioned. A decade later, *Oslo* vessels had almost completely replaced its parent class in the fleet.

## Technical specifications

The *Oslo* design was less angular than the *Norway*, with a bulkier primary hull.

### Propulsion systems

The Salduro AA-3 Dilithium-Energized Variable Warp Drive Units (VW-18-SPI-002), combined with the Mk 12 Matter/Anti-Matter Reaction Assembly from RamJet Developers, provided a cruising speed of warp factor 7 and a maximum sustained speed of warp 9.75, which it could maintain for 22 hours. Sublight velocities were provided by a pair of Slepnir 61-KL Subatomic Unified Energy Impulse Units were mounted at the ends of the catamaran pylons.

### Tactical systems

The *Oslo*-class was constructed with rodinium alloy hull plating with ablative properties.

## Appendices

### Connections

**Project groups:** **Union Station** (*Geneva* • *Concorde* • *Presidio*) • **Century Cruiser** (*Springfield* • *New Orleans* • *Challenger* • *Niagara* • *Freedom II* • *Galaxy* • *Nebula* • *Cheyenne*) • **Multi-Mission explorers** (*Brigid* • *Esquiline* • *Palatine*) • **Deep Shadow** (*Eclipse* • *Phantom* • *Scryer*) • **Miracle Worker** (*Scott* • *Daystrom* • *Tucker* • *Gagarin*) • **Aeronaut** (*Mercury* • *Ajax* • *Icarus* • *Shran*)

**Other named classes:** *Aegian* • *Aerie* • *Akula* • *Atlas* • *California* • *Centaur* • *Challenger* • *Cheyenne* • *Constellation* • *Constitution III* • *Crossfield* • *Curry* • *Daedalus* • *Dauntless* • *Excelsior II* • *Freedom II* • *Gemini* • *Glenn* • *Guardian* • *Inquiry* • *Iwo Jima* • *Jupiter* • *Lexington* • *Niagara* • *Obena* • *Okinawa* • *Parliament* • *Perseus* • *Pioneer* • *Ranger* • *Sagan* • *Solanae* • *Springfield* • *Turing* • *Ulysses*

**Auxiliary craft:** *Aero* • Class C • Class F • *Danube* • *Flyer* • *Gondola* • *Kodai* • *Mollard* • *Peregrine* • *Selenic* • Type 4 • Type 5 • Type 6 (Type 6A • Type 6S) • Type 7 • Type 8 • Type 9 (Type 9A) • Type 10 • Type 11 • Type 14 • Type 17 • Type 19 • *Valkyrie* • *Venture* • *Waverider* • *Yellowstone*

**Leadership:** Commander-in-chief • Joint Chiefs • Chief of Starfleet External Affairs • Chief of Starfleet Operations • Chief of Starfleet Research and Exploration • Chief of Starfleet Tactical

**Agencies:** Operations (Engineering • Judicial • Materiel Supply • Mission Operations • Personnel Management • Records Service • Shipyards Operations • Starbase Operations) • Research & Exploration (Science • Medical) • External Affairs • Tactical (Intelligence • Security • MACO)

**Notable units:** Ktarn Fleet • Task Force 77

**Facilities:** Deep Space K-7 • Deep Space K-13 • Deep Space 9 • Masamichi Array • Starbase 45-Keepsake • Starbase 82-Maat • Starbase 234-Beskerm • Starbase 247-Vershina

**Agencies:** Starfleet • Diplomatic Corps • Department of Temporal Investigations • Federation Security Agency

**Facilities:** 40 Eridani A Starfleet Construction Yards • Antares Ship Yards • Beta Antares Ship Yards • Copernicus Ship Yards • Laikan Starfleet Shipyards • McKinley Station • Memory Project • New Aberdeen Shipyards • Proxima Maintenance Yards • Salazaar Shipyards • San Francisco Fleet Yards • TL-9139 Starfleet Maintenance Yards • Tranquility Base • Utopia Planitia Fleet Yards

### Sources consulted

* Oslo class article at *Memory Beta*.
* *Oslo*-class at StarTrekOnline.com (archived)
* Akira Heavy Escort article at the *Star Trek Online Wiki*.