albert_hess2003
05-13-2006, 03:34 PM
Maybe I'm missing something here but, after careful examination of the benefits I'm at a loss to understand why some later versions of sub types are (supposedly) better.
For instance, Type VIIB versus Type VIIC: other than the actual physical dimensions a bit different the only positive changes between them that I see are a 3 second improvement on dive time and a 22 meter improvement on maximum depth, which to me doesn't seem to offset the .4 kt loss of max submerged speed and the 10 nm loss of submerged endurance.
The same with the differences between the Type IXC and IXC/40; the IXC/40 seems a loser all around: .3 kt loss max surface speed, .3 kt loss max submerged speed, 40 meter loss operational depth in exchange for a measly increase of 400 nm surface endurance?
Am I missing something here?
For instance, Type VIIB versus Type VIIC: other than the actual physical dimensions a bit different the only positive changes between them that I see are a 3 second improvement on dive time and a 22 meter improvement on maximum depth, which to me doesn't seem to offset the .4 kt loss of max submerged speed and the 10 nm loss of submerged endurance.
The same with the differences between the Type IXC and IXC/40; the IXC/40 seems a loser all around: .3 kt loss max surface speed, .3 kt loss max submerged speed, 40 meter loss operational depth in exchange for a measly increase of 400 nm surface endurance?
Am I missing something here?