OK, I simplified a bit. Given the link between M-drives and compensators in HG and the lack of any separate specification of compensators, I have always considered the compensators part of the M-drive tonnage and cost in CT.
I agree that they are a separate system in MT & TNE.
That is why i specified "according to CT&T5".Compensators. Integral to Maneuver Drives, Gravitic Drives, and Lifters are an inertial compensation component which counteracts the effects of acceleration on occupants of the ship.
Compensators can only compensate limited linear acceleration as specified in TNE.
Rotational acceleration as the ship swings around its own centre is not considered in any edition that I know of.