As I recall, in the original trio of LBB's, you selected a jump drive by letter (A,B, etc) from a table that was cross-ref'd with hull sizes to yield a jump value.

Sometimes a change in hull displacement would NOT change the jump value but usually it did.

In the CT HG lbb, the 'tonnage' of the JD was calculated as a % of the hull size modified by the max J desired, so if the ship's displacement was modified (re: Gazelle CE or in the case of retaining external demountable tanks) then J was also altered. (NOTE: *internal* demountable tanks does NOT change J MAX)

I would say then that the answer is 'Yes'.

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