It probably depends upon your interpretation of Grav Vehicle vs. Spaceboat.
- Obviously in a "Reaction Drive" setting a Spaceboat may require additional significant skills for handling specializations above and beyond a simple G-module Lifter on a Grav Vehicle. As you noted, would a spaceboat be using wings or a lifting-body in atmosphere, or relying on a G-Module Lifter in tandem with its reaction drive independent of a gravitic InSystem Drive?
- If you are using G-Drives/M-Drives for your InSystem Drives, are they the same as "Lifters" in Grav Vehicles, or are they related but different subsystems? For example, in T5 Lifters ("Z-Drive" - a hull fitting for space vessels - the same technology used in grav vehicles), G-Drives, M-Drives, and N-Drives are 4 separate drive motivators. And whereas G/M-Drives (and most iterations of N-Drives) can reasonably be considered to be simple advancements of a particular technological approach, the Lifters are a clearly different Branch of the field and handle and operate differently. So do they require different training and skill, or assume different operational environments and skillsets?
It is interesting that the
Traveller:TNE ruleset handled it similarly to what you suggest. They only had Reaction space drives (HEPlaR) and Congragrav Lifters (null-grav) in the setting, but Pilot for non-aircraft was "
Pilot (Grav/Interface)", and so presumed that all InSystem courses were handled by the Astrogator.
I have always considered Pilot-1 to automatically come with a presumed "Astronavigation-0" as a default going all the way back to
Classic Traveller. Otherwise the proverbial "One Man Scout" in his Type-S which was almost an archetype in
Classic Traveller becomes problematic. Not a whole lot of point to having training in the skill to maneuver a craft, that when it comes to application you can't reliably get from Point A to Point B without outside help. The majority of piloting from A to B is knowing how much to thrust in what direction and for how long, based on the astronavigation plot (which is rather a trivial task - especially with computer aid; the real piloting trick is calculating the thrust numbers for the trajectory).
I also as a House Rule took Astronavigation to include "Pilot-0" for non-Interface/Aerospace tasks.
Of course, in
Classic Traveller (and some of these might be good House Rules to import into later rulesets):
- "Pilot" [= MgT "Pilot (Spaceship)"] automatically included the skill "Shipsboat" [= MgT "Pilot (Smallcraft)"] at level Pilot ("-1").
- "Pilot" automatically included the ability to do N-Space InSystem astronavigation as a subskill at full value.
- Note that the skill "Shipsboat" [= MgT "Pilot (Smallcraft)"] did NOT automatically include the ability to do N-Space InSystem astronavigation as a subskill. This makes it primarily an Interface/Transfer/Docking Piloting Skill.
- "Astronavigation" covered both the ability to do N-Space InSystem astronavigation AND J-Space astronavigation plots at full value (and unofficially likewise covered Sensor-Ops/Comms, because CT originally did not have Sensor-Ops/Comms skill or position defined).