The starboard-middle compartment on Deck Two was converted from a barracks into a basic science lab. Geological, stellar-cartographic, and bio-analysis equipment is provided, along with detailed instruction manuals for all equipment.

The main sensor array is located in the weapons/sensor array on the ventral surface of the ship. The range of the sensors is less than that of larger ships of the line, but considerably farther than other vessels of its class, with a maximum range of 8.5 light-years at low resolution and 2.5 light-years at high resolution. The navigational deflector dish is located at the fore end of the ship, below the AMT projectors.

The computer system of the Furry-class ships was in all respects quite inferior to Starfleet computers of the same era. The hardware system was based on the old-style duotronic architecture, and the OS was little more than targeting scanners, life support control, and engine regulators. Some members of the Refit Team felt that the entire system should be completely scrapped and replaced with one of the new AI systems now being employed on several newer starships, but Accounting refused to spend the money to rewire the entire ship. Instead the Team settled for replacing the main computer core's hardware and software. The hardware was replaced with a DC-3 isolinear array computer system from Federation Micro Devices. It was not as advanced as the computer on the Sovereign-, Intrepid-, or even Galaxy-class ships, but given the Yub nub's smaller size it was adequate for the task. The Operating Software was custom built by the ever-friendly people at Nyetscape Communications. Although some members of the Refit Team still wanted Nyetscape to design a ROMANOV-based AI, budget restraints forced them to settle for a component-based, scalable system called Enhanced Waveform Object Kernel (EWOK). Written in the Cappuccino language, the EWOK system used the Starfleet-standard Multiple Access Jargonistic Enhanced Lexicon interface system (MAJEL) voice interface system, run from on-chip voice samplings. The final product was a stable, dependable, reliable computer system that had no fancy bells and whistles, but more than adequately handled the limited systems of the Yub nub.

In addition to the interface, the Team also programmed the computer with most standard and non-standard maneuvering tactics. As the ship's primary defensive tactic was to dodge and run, it had to be able to do that very efficiently. The computer was given almost complete control of the basic maneuvering properties, and the Ops console on the bridge was rigged so that the Ops officer could give general commands, such as roll left or yaw right, and the computer would automatically translate those into appropriate impulse and thruster controls. This resulted in far more maneuverability and a far lower reaction time than could be accomplished by a human, or by a larger vessel with a larger inertial mass.

Defensive shielding is based on the same gravitational distortion and deflection technique as most Starfleet vessels. The main shields have a maximum graviton load of 451 megawatts, with a maximum dissipation rate of 9.3x10^2 kilowatts.

Main weaponry on the Furry-class was provided by a single Type VIII phaser array on the fore of the vessel, which wrapped around horizontally to provide approximately 240 degrees of coverage. Starfleet did not believe that this was sufficient protection for its crews, however. The refit process added three more Type VIII arrays to the Yub nub, one running the ventral length of the ship, and two on the dorsal side on either side of the weapons/sensor array. The two dorsal phaser arrays extend over the back of the ship and curve inwards to cover the aft section as well. All phaser arrays are equipped with 20 emitters, and together provide full 360-degree coverage.

The most intriguing system on the Furry-class was the charged anti-matter magnetic projectile system, more commonly known as the anti-matter torpedo (AMT). The AMT worked by siphoning off anti-matter from the anti-matter storage compartment on decks two and three and channeling it to the dorsal weapons/sensor array located above deck one. There, the anti-matter (anti-deuterium) was stripped of its orbiting positrons and locked into a magnetic field generated by a magnetic constrictor. The magnetic constrictor is a small device, only ten centimeters in diameter, which serves only to create and maintain a magnetic field capable of holding the charged anti-matter for a short period of time. The constrictor was then propelled by the force of the stripped positrons, which were projected against a magnetic dish on the constrictor, out of one of the two forward- or one aft-facing AMT tubes at a target. Each AMT tube had a firing radius of only 45 degrees, and once fired the projectile had no built-in propulsion or navigation systems. Upon contact with a target, the constrictor is destroyed by the impact and the anti-matter, now highly charged, is released against the target without having been diluted by deep space particles, the main drawback of an anti-matter spread as used by the Enterprise-D during the First Borg Incursion. The charged anti-matter reacts with the target, causing a matter/anti-matter reaction which "eats up" the target in the reaction and releases huge amounts of energy in the process, causing further destruction.

The AMT system was left essentially untouched by the Refit Team. Each of the three firing tubes is capable of launching 1 projectile every 1.8 seconds. The two forward tubes can work in tandem, firing alternately with each other to release a projectile every .9 seconds. Two tubes can not fire simultaneously, however, as soon as a projectile is launched another projectile can be readied for a different tube. The AMT is not an effective weapon against energy-based shielding systems, as there is no matter with which to react. It is, however, quite effective against any material defense, including starship hulls, starbase hulls, planetary installations, and even celestial bodies themselves. This last target, that of a natural celestial body, was, to the best of Starfleet's knowledge, only used twice during the War. The first instance was against the Borg colony on Yavin, during the USS Montgomery's first contact with the Crag. The second was to destroy the primary satellite of Sith. Sith is a world approximately 40 light-years from Crell, and is home to the Seetha, a reptilian race. Sith's primary satellite, Xizor, was a major colony and production center, and the Crag, under Overlord control, destroyed it as a demonstration of what would happen to Sith if they did not surrender. (A source of animosity between the two races ever since.) In both instances, over 2000 ships were involved in a sustained, concerted attack. While such an attack is still possible with the Yub nub, it would again require thousands of ships working in tandem for a sustained period of time, as well as a reason to do so.

The Yub nub can store up to 500 magnetic constrictors. A dedicated replicator in the weapons/sensor array can produce extra constrictors on demand and ready them for loading at a rate of 1 every five seconds. Each projectile can be independently armed with anywhere from 1 gram to 100-kg equivalent mass of anti-matter.

The main bridge is located forward on Deck 1. The trapezoidal compartment consists of one station for each officer on the ship, although not all are staffed continually. The Commanding Officer has a forward-facing swivel chair center aft in the chamber. Directly in front of him is a single helm station, which centrally controls the navigation of the ship. Four duty stations are present, two side aft and two side forward. Originally, they were dedicated clockwise from the Conn to Engineering, Operations, Tactical, and Environmental, respectively. The Yub nub refit included upgrading each station to be able to handle any function, although by tradition they are still assigned to that purpose. Typically they are staffed by the Chief Engineer, Executive Officer, Chief Tactical Officer, and Chief Medical Officer, respectively, with the Chief Science Officer manning the Conn. That is by no means fixed, however, especially as the crew are often elsewhere on the ship while on duty. A high-resolution 3-meter gas plasma display at the fore of the bridge serves as a view screen.

The two aft cargo bays on Deck Two were left intact. They serve as the primary storage facilities onboard the Yub nub. No dedicated cargo transporters are present, but material can be transported in and out by the main transporter systems.

A single tractor beam emitter is located ventral aft on the Yub nub. It has a combined output of 8-megawatt graviton displacement power.

A basic four-pad transporter room is located on the port side of Deck Two, just aft of the computer core. The control station is located against the port wall. The transporter has a nominal range of 35,000 kilometers.

The port-fore barracks on Deck Two was converted into a small sickbay facility. Due to limited support in the construction itself, most of the equipment is portable equipment designed for field hospitals that has been tied into the ship's power grid directly. Sickbay also relies on the main computer for processing. Specialized load-balancing software in the EWOK system automatically prioritizes processing requests based on current ship status to avoid having the medical systems tie up the entire computer during a combat situation, and vice-versa. Three biobeds, one equipped with a surgical support frame (SSF), provide ample facilities for the crew of six.

The port-middle barracks on Deck Two was converted for use as a communal galley. The Furry-class was not equipped with replicators in each quarters, so rather than the expense of adding the requisite conduits the Refit Team opted to install two general purpose replicators on the fore-wall of this chamber and designate it the galley. These replicators are capable of producing an adequate variety of foodstuffs for consumption, as well as small non-edible entertainment objects, energy levels permitting. Two rectangular tables with seating for four each complete the facility.

Holographic systems are limited to the single holosuite on Deck 2. The refit team originally intended to forego any holographic recreational facilities due to energy constraints, but political pressure forced them to change their minds. When they announced that holographic systems would not be included, the refit team was contacted by the Committee of Officers to Maintain Manageable Interactive Entertainment. COMMIE insisted that the crew of the Yub nub would have to have adequate recreational facilities or else they would call a subcommittee to consider the idea of striking on the Refit Line. Due to the shortage of space on the ship, the Refit Team replaced the starboard-fore Deck Two barracks with a generic Holosuite. Not as elaborate as a Holodeck, it did meet COMMIE's demands. No other holographic systems are included.

Immediately aft of the bridge is the lone weapons locker. Although originally intended to hold enough munitions for three dozen Crag troops, peacetime operations and the reduced crew have reduced its usefulness. Standard store is 10 type I phasers, 16 type II phasers, 10 type III phaser rifles, two dozen photon grenades, and eight energy-resistant vests.

Given the vessel's small size, the original Furry-class designers did not see it necessary to go to the expense of including a turbolift. Instead, a simple two-part staircase fore on the ship runs from deck one all the way to deck three. During the refit, Starfleet decided that in order to better protect the ship from disaster the staircase should be sealable. Therefore, three double-ply diamond-laced steel bulkheads were installed at the entryways, one on each deck. The bulkheads can be closed on command from the crew, and automatically seal off all decks in case of hull breach.

The six members of the command crew of the Furry-class were given private quarters on Deck 1, apart from the Crag troops on Deck 2. Although the troops are no longer present, the six-person crew still has its quarters on Deck 1. All six are single-room compartments containing a twin bed, nightstand, table, and couch or love seat. Quarters do not have private replicators. The CO and XO are located aft most, closest to the Head.

Unlike Starfleet ships, the Overlords had built the Furry-class with full facilities, located in the aft section of deck one. It is suspected that the Overlords had not originally intended to provide this luxury for their Crag slaves, but as an Overlord was often present on a ship to maintain loyalty, they soon discovered that Crag, when not kept clean, begin to emit microscopic particulate matter into the air which produces a distinctive effluvia, as well as larger particles which settled on objects and trapped this effluvia to the surroundings. To avoid the drawbacks to efficiency produced by this dilemma, the Overlords provided a section of the ship for the Crag to rid themselves of this particulate matter in a non-offensive manner. The discovery of several dozen vessels left in permanent dry-dock at Starbase 202 which lacked this feature tends to confirm this hypothesis.

The Furry- and Yub nub-class head is located at the aft section of deck one, with a single entrance from the main corridor. The rear wall of the chamber is curved to match the curvature of the ship itself, with a 1.5-meter gap between the outer wall and the inner wall. Two quarter-circle corridors occupy this space, with entrances at the fore sides of the room, which have liquid-hydrogen monoxide emitters in the ceiling and walls and waste collection slots at the sides of the floor, which is slanted inward. A subject enters one of these corridors at the fore-end and passes through the dihydrogen monoxide emitters, which remove 98% of the particulate matter given off by the Crag, as well as most other species. The subject then passes through another door at the back of the chamber into a smaller room two meters square. This room is equipped with high velocity gaseous projectors on all six walls, which enables the subject to remove the excess dihydrogen monoxide left over from the quarter-circle chambers in a minimum amount of time. This room then opens into the main chamber. Arranged around the back wall of the chamber are four triangular regions divided off from the rest of the chamber by thin steel plating, which extends approximately 3/4 of the way from the floor to the ceiling. These partitioned sections each contain a standard waste collection bin, with a hydrogen monoxide rinse. In the center of the chamber is a large pipe, one meter in diameter, which carries the anti-matter from the storage area below to the dorsal weapons array. Although some officers were concerned that this close proximity to the anti-matter would result in undue exposure to anti-proton radiation, the radiation levels in this chamber were found to be only .0002% higher than the average level throughout the ship. Around the anti-matter carrier pipe is a circular hygienic dihydrogen monoxide fount, which is activated by infrared sensors implanted in the carrier pipe.

All waste material extracted by the facilities is channeled to the matter storage and replication generator on deck three for recycling.

• Bridge
• Quarters
• Head

• Computer Core and Control Room
• Transporter Room
• Sickbay
• Holosuite
• Science Lab
• Mess Hall
• Antimatter storage

• Main Engineering
• Antimatter storage
• Deuterium storage
• Equipment
• Landing struts, gangway