If the ship is crippled, it will require an overhaul to repair (and new Dilithium). Otherwise, use the campaign repair rules in (D9.4), ignoring any mention of (D9.7) and (D14.0). Also, do not repair Hull damage in (D9.41). A ship may repair up to 10 repair points worth of systems each strategic impulse on itself. The cost of repair of each system can be found in the rulebook.
If your ship is completely repaired before (D9.4) is used up, record the number of repairs left over. These will be used the next time your ship is damaged instead of calculating based on DamCon. If your ship is not completely repaired, it must dock with a repair unit for ANY more campaign repairs to be performed on it.
Ships with repair systems may repair other ships. Each Repair box may produce 1 repair point every strategic impulse. This costs 1EP for every 10 points generated. Calculate for your entire fleet that impulse, and round up. These points may be used to repair the generating unit or another unit docked to that unit. Repair systems linked to specific docking points (base sections, mech-links, etc.) may only repair units docked at those points. Each section or docking point may perform repairs on a single unit per strategic impulse.
You may also re-enable your ship to perform self-repairs when docked to a repair unit. This costs 5x the maximum Damage Control rating in EP, and takes one full impulse. It must be paid all at once. This may be done only once per strategic turn. Note that it is much cheaper to repair most damage at starbases, and use self-repair for minor and/or emergency repairs.
A ship that has dropped its warp engines requires a Construction Dock or YDK, and pays 1EP for each Warp box on the engines that were dropped. Ships which have separated sections can be reconnected by any permanent base, FRD, or Construction Dock. Ships which have lost their separated sections must have new ones constructed as per the ship construction rules.