Ship's Brain Interface sizing and use

[Sigtrygg]

Is it? I was pretty sure this was a MWMism along with no jump vessels under 100dton that came out of the same decision that jump torps were not a thing.

D.

No.
MJD introduced it in the Traveller Companion, it was then taken as setting gospel for some reason. Such a rule does not exist in Traveller canon up to Mongoose Traveller 2ed.

It is a homage to the way hyperspace is navigated in Niven et al Known Space stories. It has never been part of the Traveller rules or the Traveller setting, until...

Prior canon actually has robot pilots and navigators, not to mention fully automated xboats.

Keep it as an option for referee's who want it, but it should be removed from any setting supplement or adventure.