Water can't be *much* more compact than LH2 drawn from said water. You're losing a crap lot of weight from the O2. I suppose it is possible that H20(l) can be more compact than H2(l) .

That said, if you have the setup or assume your purifier lets you crack the water (seems inherent in the notion of ocean refueling) and you can run it while you travel to jump point and while in jump, that's as good a plan as any.

Most fun sci fi grounds on the bloody rocks of real physics... ;)

On Sun, Oct 11, 2020 at 2:35 AM Rupert Boleyn <xxxxxx@gmail.com> wrote:

On 11Oct2020 1931, xxxxxx@gmail.com wrote:

> If you spend the time (not being in a rush) to do the processing (or
> buy enough processor to do it quickly), then you could just deal with
> a small container of LH.
>
> You can use some of your hold and get enough cracking gear to do it
> fast and still be cheaper than hauling all those dTons of useless oxygen.
Just dump the oxygen if you don't need it. The water is more compact
than LH2, but much, much massier. If mass doesn't matter, and you can
afford the refining complications, carry water for your extra fuel.
Generally you won't want to.

--
Rupert Boleyn <xxxxxx@gmail.com>

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