It's a quiet evening so I thought I'd sit down and do a bit more. I've started adding the details from the Nautilus Models etch:
This is the front of the conning tower. You can see the rails on the gun deck and the handrails round the waist.
Here's the view from the other end. The stanchions are really, really thin and the pre-moulded holesin the deck far too large, so some light filling will need to be done. I'm still looking for the mono-filament to do the handrails with. There's a few more rils to do, then the radio antenna stands. I'm trying to decide whether to do the replacement ladder rungs on theside of the conning tower. Even more fiddly than the stanchions!