Thanks for the information Siara. I don't know if i'll attempt any fine details, being a relative newbie to this sort of modeling, and i'll probably leave the PE stuff for the next one (I think i'll definately look at the Type VII C kit, or maybe a Gato)
And I'll be honest, I should have looked at the box a bit closer - I didn't realise it was a Minelaying vessel, but, after reading up on them, they're pretty interesting.
I'll post some pics when I have some progress.