U.S.S. Mariner (NCC-74671)

U.S.S. Mariner
Intrepid Class
United Federation of Planets
Starfleet 38th Fleet
May 18th, 2371
Active (2420)

U.S.S. Mariner

The U.S.S. Mariner (NCC-74671) is a Federation Intrepid-class starship operated by Starfleet. Originally commissioned as a long-range scout vessel, Mariner was a part of the original production run of Intrepid-class ships, a sister ship to the U.S.S. Voyager. Over its 49 year service history, the ship has undergone several systems retrofits for a variety of mission profiles, proving to be a dependable, versatile work horse.


During construction, Mariner and her sister ships were designed to be part of an exploratory task force leading Starfleet’s efforts to chart the distant Gamma Quadrant. However, the emergence of the Dominion as a threat to the Federation and the subsequent destruction of the U.S.S. Odyssey resulted in the early Intrepid-class ships being repurposed for low-risk scouting missions near the Cardassian Demilitarized Zone.

The Dominion War

After the breakout of the Dominion War, Mariner was assigned to the Eighth Fleet under Admiral Okonkwo, where it served with distinction. The crew’s familiarity with Cardassian territory allowed the ship to gather intelligence from Dominion space quickly and quietly, proving a valuable asset in the war effort.

A scouting mission near the Betreka Nebula unearthed a near-complete staging for an assault on Aldebaran. Mariner’s warning signal proved crucial to maintaining control of the Aldebaran sector, which led to the ship being nicknamed “The Siren” among the Eighth Fleet. The ship soon found itself assigned to sensitive intelligence gathering missions, investigating unverified reports of enemy ship movements. This ultimately led to the discovery of a major ketracel-white production facility that was destroyed by a Jem’Hadar attack ship commanded by the crew of the U.S.S. Defiant.

The ship didn’t see involvement in any major engagements until the Eighth Fleet was conscripted to participate in Operation: Return, where Mariner fought Dominion forces to retake Deep Space Nine.

Romulan Diplomacy and the Refugee Crisis

Following the Dominion War, the Federation took to using the Intrepid-class ships as transports for high-risk political and diplomatic parties, as they were dependable in battle and fast enough to outrun most threats. Mariner was escorted by the U.S.S. Titan to ferry the first Federation diplomatic envoy to Romulus after the death of Praetor Shinzon in 2379.

By the mid-2380s, Mariner was one of the first ships outfitted with a quantum slipstream drive. This distinct tactical advantage led to its assignment as a rapid response patrol ship guarding refugee convoys against Orion and Nausicaan pirates as they evacuated the Romulan star system.

Systems Failure and Decommissioning

Having served through three galactic conflicts by the end of the Iconian War, Mariner was finally afforded the ability to fulfill its original vision: exploration. The ship saw an extensive overhaul at the Antares Fleet Shipyards in 2413, receiving a complete systems retrofit that brought it up to spec with the latest Pathfinder-class explorers.

Unfortunately, over time, the ship’s battle-tested, well-worn power grid wasn’t able to keep up with the demands of its new systems. During a close-range survey of the emission zone of a neutron star, a primary plasma conduit overheated from long-term thermal stress and caused a power failure in the aft shields and engines. The gravity well of the neutron star pulled the Mariner into the exclusion zone, causing massive jets of radiation to bombard the aft section, superheating and partially fusing the nacelle articulation system and compromising the warp coils and underlying spaceframe with neutron fatigue.

The damage was deemed too extensive to repair, and the ship was brought to Deep Space 13 for decommission and salvage.

Resurrection and Recommissioning

By 2420, Serris Zital, who worked on Mariner during its overhaul at Antares, had been reassigned to Deep Space 13 at the time the ship was due to be decommissioned. Having extensive familiarity with the ship and its systems, he requested permission to try an experimental molecular reconditioning on the aft hull, using a cross-linked pattern buffer made from cargo transporters and industrial replicators to suspend the ship’s aft section in the transporter section by section and resequence its molecules to perfect condition. Intrigued by the implications for future repair operations, Captain Lauren Varley and Lieutenant Commander H’ajah approved the procedure.

After a month of 24/7 transporter operation, and substantial energy and computer memory investment, Mariner had undergone a total engine replacement in half the time it would have taken to source the parts and construct new nacelles.

Left without a crew after its decommissioning, the ship has been reactivated as a hazardous search and rescue specialist vessel and is currently awaiting personnel assignment.

Technical Data

Full Technical Specifications
Vessel Specifications
Hull Duration
Time Between Refits:
Time Between Resupply:
Intrepid Class (First Block, Type A Retrofit (2413))
Hazardous Operations Specialist Vessel
100 years
10 years for major system replacements. 2 years, 6 months for minor system upgrades.
Full store rotation every 3 years
344.5 m
132.1 m
64.4 m
700,000 mt
Habitable Decks:
Enlisted Crew:
Civilian Crew:

Emergency Cap.:
Up to 20 (including short term visitors, crew families, scientific and facilities contractors)
Up to 5, mission specific
Warp Drive Configuration:
Warp Drive Units:
Impulse System:
Slipstream Drive:
Transwarp System:
Class 9 Yoyodyne 42B M/ARC Warp Core rated at 1650+ Cochrane

Twin VG-1 Advanced Asynchronous Warp Drive Units
Twin FIG-5 Subatomic Unified Impulse Units

Q-2I Quantum Slipstream Drive System
Twin Asynchronus TF-7-X Transwarp Coil Units
Avg. Cruising Spd:
Max. Cruising Spd:
Maximum Spd:
Warp 6.4 (Conventional) Transwarp 16 (Slipstream)
Transwarp 12.81 (Conventional) Transwarp 32 (Slipstream)
Transwarp 13 (for 1 hour, conventional) Transwarp 60 (Slipstream - See Addendum)
Primary Shielding System:
Backup Shielding System:
Additional Defenses:
FSR4-C Metaphasic Resilient Shield Array

FSS-3 Force Field and Deflector Control System

4cm of Trellium-C based Ablative Armor Plating

Phaser Systems:
Torpedo Systems:
Torpedo Armament:
13 Mk XIV Phaser Arrays
4 Mk XIV Direct Fire Transphasic Torpedo Launchers
Typ. 80x Mk V-ß Transphasic Torpedoes
Sensor Systems:
Probe Systems:
Deflector System:
3 DYN-90 Multi-Spectrum Sensor Suites P/S, 1 Warp Current Sensor
Class I through X probes available
Twin graviton polarity generators feeding twin 550 millicochrane subspace field distortion generators
Scientific Laboratories:
* 1 General Purpose Lab
* 1 Astrophysics Lab
* 1 Temporal Physics Lab
* 1 Holographics Lab
* 1 Astrometrics Lab
* 1 Stellar Cartography Lab
Additional specialized equipment may be installed on request
Medical Support Systems:
Full Medical Ward in Saucer Section
Up to five additional Medical Facilities for Triage/Quarantine/Emergency Capacity
Recreational Systems:
* 1 Crew Lounge in Primary Hull
* 2 Standard Holodeck Facilities
* 1 Gym Suite
* Phaser Range (Primarily used for Security and Tactical Training)
Auxiliary Craft:
1x Aeroshuttle Captain's Yacht
2x Type 8 Shuttlecraft
2x Type 11 Shuttlecraft
2x Delta Class Runabout
8x CMU Workbees

Slipstream Addendum: Only tested in simulations, the slipstream drive can be put in a controlled overload state which would theoretically allow speeds as high as Transwarp 60 for less than one second, allowing the ship to traverse ~7 lightyears near instantaneously. No known vessel is capable of surviving these speeds as the slipstream drive would rip itself from its housing causing catastrophic damage to the Quantum Slipstream system as well as surrounding systems and ship. Such a procedure should only be used in a dire emergency.

Physical Arrangement & Crew Support

The hull configuration of the Intrepid-class adopts the saucer-type shape of previous starship classes, which of primary hull, secondary hull, and nacelles driven by the physics of warp generation and control. One of the Intrepid-class’ most notable characteristics are its articulated variable geometry warp nacelles, which angle when going to warp, a quality which has since been adopted by modern contemporary designs. The Intrepid-class uses a duranium hull structure, a plasma-based power distribution system, and tricyclic life support systems.

Following the Starfleet standard, deck 1 is reserved for the main bridge, with the briefing room and captain’s ready room located to port and starboard sides of the bridge. Located in the front section of deck 2 is the crew’s mess hall and the galley, served by three windows that offered a spectacular view of space in front of the vessel. One deck below, located in the front section of deck 3, are the quarters of the starship’s commanding officer, served by five windows.

Further aft, the main navigational deflector dish is found at the fore side of the Intrepid-class’ secondary hull. Located right above the deflector are the forward photon torpedo launchers. On the underside of the secondary hull are three sets of plates that support the warp propulsion system. The forward plate covers the reserve intermix chamber; the middle plate contains the antimatter loading port, a large magnetic valve that kept the antimatter from coming in contact with matter during the transfer to the storage pods; and the aft cover plate contains the operational intermix chamber hatch, for ejecting the warp core in case of emergency.

One of the few Starfleet starship classes capable of atmospheric entry and planetary landing, the Intrepid-class starship is equipped with antigravity generators, as well as impulse and lifters strategically placed at the mass and stress points on the bottom portion of the secondary hull.

Command & Control Systems

Mariner is one of the only starships left in service sporting first generation bio-neural gel packs for legacy system compatibility, pending a full computer core replacement and operating system re-imaging scheduled for the next full systems refit in 2423. Bio-neural gel packs are hybrid organic-electronic computing devices containing neural fibers surrounded in a blue gel with metallic interfaces on the top and bottom. They are designed to cache and facilitate information and data transmission throughout the ship, and store more information and operate at faster speeds than isolinear circuitry.



James Pryce IX

Amathel Tolar

Mei Leideex

Mei Leideex

Serris Zital

Muirgen Finney