Not in canon. The rated jump number is the limit. 

On Sun, Oct 6, 2019, 11:15 Thomas RUX <xxxxxx@comcast.net> wrote:

Hello all,


Back in when I picked up Traveller my impression, which was reinforced by the GM, has been that a J4 drive has a maximum range of four parsecs regardless of the hull size that it is installed in.


Can a J4 drive built for a 400 ton hull allow a 300 ton hull to make a five parsec jump?


Tom Rux

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