Changes the behavior of helm controls to Pitch and Roll while active.
Throttle is changed to Pitch, allowing you to tilt your ship forward and back 3 degrees per throttle position, allowing up to 12 degrees pitch change in either direction.
Wheel is changed to Roll, allowing incremental sideways rolls up to 12 degrees.
Another effect is turning the tool off while pitched forward will cause your ship to dive until ship corrects its orientation (maybe 0.25 seconds per throttle position). Combined with balloon tools, this can either keep your current altitude (W), or increase the dive (S). The opposite would be true for reverse pitch. Using kero or moonshine would drastically increase the dive, while chute vent would turn it into suicide.
Ships that would benefit from Roll, greatest to least:
Galleon
Junker
Pyramidian
Little benefit:
Goldfish
Squid
Mobula
Spire
Ships that would benefit from Pitch, greatest to least:
Mobula
Spire
Pyramidan
Goldfish
Little benefit:
Squid
Junker
Galleon
Ships that would benefit from Dive (factoring in acceleration of both engines and balloon), greatest to least:
Squid (I can hear the drool of Squid pilots already).
Mobula
Goldfish
Pyramidian
Little Benefit:
Junker
Spire
Galleon
All around, I think this tool would benefit all ships, in either increasing gun arcs, or added maneuverability.