"Antimass Deflectors" and "Maneuvering Jets" are both explicitly referring to ships, regarding the ability to pass through Asteroid Fields/Ion Storms.
But Saar Space Docks are affected by these Technologies still.
Following this canon, "Gravitiy Drive" would at the very least have to let Saar Space Docks pass through Gravity Rifts safely.
Saar Space Docks are immune to most harmful effects (PDS, Mines), and can cancel more negative effects through these drive-technologies.
Then, all movement boosts from blue Technologies always mention specific ship-types.
Except for "Gravity Drive".
Since, theoretically, this type of movement does not use specific new propulsion engines, but (I guess), some type of swing-by-/gravity-surf-principle, it should be applicable to all units you are able to move through Space individually.