Has anyone worked out a way to convert designs from GURPS Traveller to T20. I can see there are different methodologies, especially in ships armor. I am trying to work out a rough "in the spirit of the design" method and if you have any thoughts I'd love to hear them.
Ignore the GURPS armour rating. Design the ship with T20 rules but using the GT ship hull size and drive performance parameters. If there's any space left at the end add armour. Or reduce cargo and add armour.
Most of the GT ships I've seen are conversions of CT ships anyway, so you could just use CT as the source (there are some differences in maneuver drive performance).
It's a heckuva lot easier to create ships in T20 Traveller than it is in GURPS. You've got to be as freakin' rocket scientist to create ships under GURPS rules in any setting.