Hello Sawdeanz,
Nice project you are undertaking, you will have lots of fun!
I will not go into all the brass and styrene bits because the
others have said it quite complete.
I will give you some assistance on a technical note instead.
The Revell U-47 kit represents a Type VII B in its early configuration. This tower although a little off
in measurements, correctly depicts the original tower as seen on the Type VII A and the early VII B.
The aft portion of the tower comes together to form a point and sweeps out from top to bottom.
The 2cm flak is in the right location as these boats carried this weapon mounted on the deck. You
also have to add a hatch between the flak and the tower (in place of the"button") to represent the
watertight ammo locker. If you are modelling Gunter Prien's boat then the tower is basically
correct, just add detail.
The later VII B, as in U-99 saw some modification to the tower. You will find that the tower in
the Revell kit U-99 correctly depicts this type. The main difference was that a circular platform
was added and the flak was moved up onto the tower. There was also modifications to the air
intakes. When looking at the Type VII B (late) you will notice that the tower now sweeps in-
wards from top to bottom. This is correct for the late VII-B tower. There should also be an air intake
duct which is faired in with the attack periscope housing.
So depending on which boat you model, use the towers accordingly and yes the Westwood book
is excellant for all other references. You may also want to refer to:
The Type VII U-boat .... Robert C.Stern
The U-boat in Action ..... Robert C.Stern Squadron Signal Publications
All excellant reference.
Hope this has been of help, have a nice day and happy modelling!
Joe
PS I will link to an excellant site with lots of interior photos. I will get back to you on this later.