You are probably correct Andrew.
Anyway, I have now figured out that I am not in a hurry. Apart from elevating, the main guns also swivel and are detachable, so however I decide to make the blast bags, it will be easy to do later.
Today I have been trying to rig the cranes.
Very fiddly work, but I am getting there as you can be seen from this photo
All parts are ready to be fitted, so I expect to be able to show the completed battleship in 2-3 weeks time - with updates in between.
The superstructure should be completed over the weekend.