Designing an SSBN tender from its mission

What would a British SSBN tender ship look like?

Its design follows its purpose: a permanent overseas base needs several substantial support vessels, while an emergency tender can be much smaller.

The design begins with the mission rather than a standard tender template. A semi-permanent Falklands base would need major stores, accommodation, workshops, and the ability to support both submarines and their missiles. That mission would require multiple support vessels rather than one ship. A floating dry dock or comparable facility would also be necessary to lift and inspect the submarines. An emergency resupply tender could be much smaller because it would not have to reproduce a full overseas base continuously.