Hi pgollin,pgollin wrote:.
The major reason for the different weights was that the USN used a "single base" propellant (powder) whereas most other nations (including the Germans) used a double base propellant, which meant less weight/volume was required for equivalent power. I would ASSUME that single and double base propellants would have SLIGHTLY different noise signatures due to the speed of propagation, certainly single base produced more smoke.
.
That make sense and regarding the smoke i found some nice footage of USS Iowa shooting the 16 inch guns and i notice 3 different colors for the smoke so i guess this was probably similar on German ships.
Regards Hans