[King-Aaron]

Water storage could also be used as a way to mitigate the radiation problem in space. If you had a 'sleeve' inside the hull that contained water, you'd have both a large storage capacity for fuel as well as inbuilt radiation shielding?

(*Note, I am not an engineer)

[lpaone]

I have a friend studying radiology with the hopes of working in the space industry. From what he tells me, I believe this would work.