Capsule: The OSD III provides facilities for repairing and overhauling capital ships up to 600 meters in length, plus additional bays for smaller ships. The station consists of two large drydocks (which are joined into one unit for ships over 300 meters long), numerous freighter and spacebarge hangars, and includes living quarters for dock personnel.
Normally, long term overhauls and repairs (taking from one to six months) are performed in Dock 1, while Dock 2 is reserved for shorter repair jobs. However, because of changing priorities, maintenance scheduling, and the unexpected arrival of damaged ships, the dock often adjusts its normal procedures.
Capsule: The Wroona Stardock was initially constructed by Wroona's Imperial governor during the Empire's stay on the planet. Since the Wroonian revold just after the Battle of Endor, it has been run by the Wroonian Guilds as a repair facility for anyone who can pay the expensive berthing and repair fees.
The repair facility is large enough to fit an Imperial Star Destroyer, or several smaller capital ships. Sections of the stardock house storage bays, quarters for the crew and technicians, space tugs and shuttles, and repair bays. Only 50 technicians are on duty at any given time — for more important jobs more technicians are shuttled up from Wroona's surface to help with repairs.
The Wroona Stardock is exclusively for use by capital ships unable to land at starport facilities planetside. Wroona starport can handle many repairs for starfighters, freighters, and smaller capital ships. Using the immense Wroona Stardock facilities is a large and expensive undertaking.
The Imperial OB calls for each sector to maintain two deepdock shipyards, plus as many orbital yards as necessary to maintain the sector group. Deepdocks were the center of the engineering corps and technical services, with orbital repair yards supplementing deepdock repair activities in most sectors, while in others orbital yards supplanting them. Even at its height, the Imperial Navy was ruthlessly practical and tended to conform to local sector conditions.
These great shipyards not only repaired but also constructed Imperial ships from light cruisers to Imperial Star Destroyers, usually by local contractors under corporate supervision. These contractors often made use of alien slave labor and droid assembly. Although specific dock models vary, Imperial shipyard complexes are required to be modular, open-architecture, reconfigurable, and hyperspace-capable. Most Type II Orbital Yard are in a cubical arrangement, heavily armored and shielded but nearly unarmed. They are theoretically defended by at least a full escort force and stormtrooper company, but recent Imperial losses have pared the ships available for this duty to a minimum.
Black Sword Command, the regional central command for Farlax and Hatawa sectors, used Kuat Drive Yards Type II Orbital Repair Yards almost exclusively. Recent intelligence on the detailed Imperial OB reveals five of these orbital yards are unaccounted for.
Deepdock fleet has an average of 280 support vessels, plus a force escort to protect the deepdock assets. Deepdock contains two deepdock complexes, the engineering corps, plus two force technical services.
Deepdock complexes are huge structures, and the ones planned are becomming larger all the time. Deepdocks are floating shipyards, able to make extensive repairs and modifications. When not repairing vessels they are building new ones to join the fleet. The smallest deepdock complex still in service has three work bays, the largest of which can hold a Victory Star Destroyer with the other two able to accomodate any ship smaller than a carrier. Such deepdocks have huge tractor beam generators which put up to eight damaged ships on hold while waiting for a work bay to open.
The largest deepdock now in operation is the Rendili R/M Facility Number Four, currently in the Mahrusha sector. It has 125 work bays, each of which is large enough to hold a strike cruiser. These work bays are modular, each segment joined to the other by attraction-variable Akinetic fields produced by Voorson generators larger than the drives on most combat starships.
This allows the work bays to be combined to form larger work bays; four work bays can be joined to repair or manufacture a Victory-class Star Destroyer, 15 can be combined to work on an Imperial Star Destroyer, and 18 can be reconfigured to produce a torpedo sphere. Work bays are being added as fast as Rendili can manufacture them.
Deepdock facilities, while not as efficient as the shipyards of the major manufacturers, have the advantage of being hyperspace capable. This not only shortens the time required to get damaged combat starships repaired, but makes deepdocks more difficult targets for Rebel attacks.