Actually, this provides an interesting problem for all the realists out there.
If a 20kt cargo unit can carry 70kt of cargo, then a 300kt ship suddenly becomes (30 kt C&C comps) + (60kt engines) + (20kt cargo comp + 70kt cargo) * 10 cargo comps = 990kt. However, despite the sudden 230% increase in mass, the speed of the ship becomes the same. Perhaps in SEV, true QNP will be possible, with the mass of cargo factored into total ship mass, and ship sizes actually relative to volume. That would drastically change ship design.
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The Unpronounceable Krsqk
"Well, sir, at the moment my left processor doesn't know what my right is doing." -
Freefall