I don't know about the 24 hours patrol grid ... forgot it sorry.
But probably you need the following:
Following files need to be changed:
-SilentHunterIII/data/cfg/
+Basic.cfg
+Flotilla.cfg
-SilentHunterIII/data/Menu/Gui/Layout
+TMSTor00.tga
+TMSTor001.tga
-SilentHunterIII/data/textures/TNormal/tex
+added TVII_G7ut.tga
Back-Up!
There might be a mod?
T VII (G7ut) Steinbarsch Walter
Features:
Range: 8 km
Propulsion: Walterturbine
Speed: 45 knoten
Guidance: none
Notes: One of the first Torpedos with a Walterturbine. Some of them were available only at the end of the war.
AOTD MODPACK V2.01 compatible at
www.aotd-clan.com but I don't know if it would e compatible with LSH3?