The Type XXIII was included in the NYGM 3.2. From the readme ;
"FuMB37XXIIINYGM mod - enables use of a Type XXIII ‘electric’ U-boat, and installs a radar receiver onto schnorchel heads, as well as other minor changes. Must only be used after October 1944.
In checking the Submarine file there is a Type XXIII included but the config shows the following :
[Unit]
ClassName=SSTypeXXIII
HumanPlayable=NO
;;Interior=data/Interior/NSS_Uboat2/NSS_Uboat2
UnitType=200
MaxSpeed=9.7
MaxSpeedSubmerged=12.5
Length=37.4
Width=3.0
RenownAwarded=110
[Salvo]
1=1,2
[Properties]
PeriscopeDepth=10.5;meters
SnorkelDepth=9;meters
CrashDepth=80;meters
MaxDepth=300;meters
SurfaceDepth=7;meters
TorpLaunchMaxDepth=16;meters
StormConditions=9,0.1;max wind speed [m/s], max rain intensity [0,1]
[EngineProperties]
AllStop=0.0
AheadSlow=0.25
AheadOneThird=0.40
AheadStandard=0.60
AheadFull=0.90
AheadFlank=1.00
BackSlow=-0.26
BackStandard=-0.40
BackFull=-0.53
BackEmergency=-0.66
In looking at the file it shows it is not available for the human player. So I am not sure what happened along the way, but it appears not intended for use by the player. when installed.
The Type XXIII has a complete model :
Not sure why you have a Type XXI hull.
It may be that you need to install "FuMB37XXIIINYGM mod" which enables use of a Type XXIII ‘electric’ U-boat.
I found that file and is available here ;
https://www.mediafire.com/file/w47ig...INYGM.zip/file
Read the install instruction fully.
Good hunting
FUBAR295