[AngleWyrm]

Tug boats might be implementable if the barge/base/crippled enemy ship/whatever were thought of as external cargo.

With an external cargo setup, it could be possible to decide how much a ship can "carry". There could be techs associated with tugging/pushing. Anything from a grappling hook, to a docking clamp, to tractor beams. And the tow tech could provide maneuverability mods, max-weight limits, and speed mods.

And if it were done well, then it might even be possible to mod in ships that separate into several componants during combat. Maybe a quick-release docking clamp tech. And if it were done poorly, it might be possible to do a quick hack job and just make it a mandatory that there is only one tow tech per ship.