I dont think Stoianm added torp to his mod.
You can do this your self:-
Open stoianms mod and goto -
C:\Ubisoft\Silent Hunter 5\MODS\stoianm upgrade available mod compatible a fistfull of emblems&Equipment_Upgrades_Fix_1_0_byTheBeast\data \UPCDataGE\UPCUnitsData
Then copy the Ammunition.upg from -
C:\Ubisoft\Silent Hunter 5\data\UPCData\UPCUnitsData and paste it into Stoianms mod.
Open the Ammunition.upg and look for the torps, i.e:-
[Ammunition 14]
ID=T3Fat2Torpedo
NameDisplayable=T3Fat2Torpedo-Name
Info=T3Fat2Torpedo-Info
Notes=T3Fat2Torpedo-Notes
Type= AmmoTorpedo
Subtype=T_III_FAT_II
AmmunitionIntervalOptionCurrent= NULL, NULL, 0
AmmunitionIntervalOptions1=
1942-09-01, 1943-03-15, 300 << each of these lines control when you can get them (from and to dates) and the last number is cost.
AmmunitionIntervalOptions2= 1943-03-16, 1943-08-01, 160
AmmunitionIntervalOptions3= 1943-08-01, 1943-09-01, 150
AmmunitionIntervalOptions4= 1943-09-01, 1943-10-01, 140
AmmunitionIntervalOptions5= 1943-10-01, 1943-11-01, 130
AmmunitionIntervalOptions6= 1943-11-01, 1943-12-01, 120
AmmunitionIntervalOptions7= 1943-12-01, 1944-01-01, 110
AmmunitionIntervalOptions8= 1944-01-01, 1944-02-01, 100
AmmunitionIntervalOptions9= 1944-02-01, 1944-03-01, 90
AmmunitionIntervalOptions10= 1944-03-01, 1944-04-01, 80
AmmunitionIntervalOptions11= 1944-04-01, 1944-05-01, 70
AmmunitionIntervalOptions12= 1944-05-01, 1945-09-01, 65
So if you change it to this:-
[Ammunition 14]
ID=T3Fat2Torpedo
NameDisplayable=T3Fat2Torpedo-Name
Info=T3Fat2Torpedo-Info
Notes=T3Fat2Torpedo-Notes
Type= AmmoTorpedo
Subtype=T_III_FAT_II
AmmunitionIntervalOptionCurrent= NULL, NULL, 0
AmmunitionIntervalOptions1=
1938-01-01, 1950-12-31, 0
Volume= 1
PackSize=1
TrackingID=1206
You will get that torp from the start and it will cost nothing