Fuel tanks in place of Hood's crushing tubes

What would replace Hood's crushing tubes if those spaces became fuel tanks?

Reinforced, heavily subdivided fuel tanks could provide some protection while also producing a significant increase in range.

The proposed fuel conversion would significantly increase Hood's range. The replacement tanks might use tubular or otherwise reinforced construction so their structure absorbed part of an underwater shock. Designers would subdivide the fuel volume rather than rely on one large tank. That arrangement would limit both fuel loss and flooding after a hit, although it would not be identical to the purpose-built crushing-tube system.