Water in gear turret

Mid way through replacing the bulkhead, and while the windscreen has been out, water has got into the turret of the difflock gear. You can only see a little water in the photo as I've tried to soak it up.

If I unbolt the turret (4 bolts?), dry it and cover it up again, should I be ok? Or is there a path for the water to get down into the box.
If yes, then if I drain the oil, let it dry out, should that be ok?
Or is there gearings / bearings etc that could have been damaged?

Yes just unbolt clean out and put back,there is a gasket. How long has it been sat ? Water could find its way under the main gear lever as well.

There should be no access for water toget into your box as they are well sealed against ingress.

Unbolt it, turn it upside down to get the water out, cover it liberally in grease and refit.

if hi/ lo housing has filled with water ,drain some oil out of box to ensure there none seeped in there

If gearbox oil not been done for some time change it anyway.