Quote:
Originally Posted by Toltrin
Are there any alternate or advanced drive systems one could install in a 100t scout class that could jump 4 or even 5 with special fuel other than deuterium?
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Eric has covered the special fuel angle. Note that standard liquid hydrogen jump "fuel" is protium, not deuterium.
There is a canonical 100-dton ship that attains jump-4: the express boat (xboat). It achieves this by sacrificing maneuver drives (and, in some versions of Traveller, a power plant).
Depending on the version, you could trade three staterooms, fire control, and three dtons of cargo for 20 dtons of fuel tank and manage two jump-2's with a modified Type S scout/courier. That would allow you to jump into a system 2 hexes away and jump back again without refueling, or cross a 4 hex gap in two jumps.