When using the Hyperspace Drive (Core Rulebook p109), the text states "A
hyperspace drive consumes no extra fuel, but takes up twice as much
space as a jump drive. While in hyperspace, the spacecraft moves at a
rate of one parsec per day per manoeuvre drive rating."

A submitted design for a 400t ship interprets this as requiring only
power plant fuel, and does not allocate what would have been Jump fuel
in a standard design.

I am not convinced that this is correct; I believe that the correct
interpretation should be that the fuel requirement for the Hyperspace
drive is the same as for the equivalent jump rating of Jump Drive, i.e.,
in a 400-ton ship, a Jump Drive B would give J1 performance, requiring
40 tons of fuel; thus, a Hyperspace Drive B requires that same 40 tons
of fuel to open the two hyperspace portals - after which a Maneuver
Drive D could provide, per the same page, 2 parsecs/day travel.

Has there been an official statement on which is correct? If so, what is
the correct interpretation, and where has that official ruling been set
out?

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