NYGM TDC Depth Error Mod for all SH3 Cmdr users

[Der Teddy Bar]

NYGM TDC Depth Error Mod is only available and possible with the use of SH3 Cmdr and is where 30% of the time the torpedo will be at the correct depth as set with the TDC and for the other 70% of the time that the torpedo depth will have an error from as little as 0.5 metres up to 3 metres.

Even though the cause of the issue was discovered in Jan 1942, a solution was not available until late 1942.

The example below is a slightly modified one for generic use in the Randomised events.cfg
;----------------------------------------------------------------------------------
[0:data\Menu\cfg\Dials.cfg]
ApplyToPeriod=19390901|19421115
ChooseFrom=10
RndMidPat=1

0_Dial0|RealVal=3.5,25

1_Dial0|RealVal=4,25

2_Dial0|RealVal=4.5,25

3_Dial0|RealVal=5,25

4_Dial0|RealVal=5.5,25

5_Dial0|RealVal=6,25

6_Dial0|RealVal=6.5,25

7_Dial0|RealVal=3.5,25


If you have more than one TDC set as we do in the NYGM 2.2 mod, then you will need to configure each dial for each TDC set as per the NYGM TW 2.2 configuration changing the dial numbers to suit.

;----------------------------------------------------------------------------------
[0:data\Menu\cfg\Dials.cfg]
ApplyToPeriod=19390901|19421115
ChooseFrom=10
RndMidPat=1

0_Dial0|RealVal=3.5,25
0_Dial58|RealVal=3.5,25
0_Dial64|RealVal=3.5,25

1_Dial0|RealVal=4,25
1_Dial58|RealVal=4,25
1_Dial64|RealVal=4,25

2_Dial0|RealVal=4.5,25
2_Dial58|RealVal=4.5,25
2_Dial64|RealVal=4.5,25

3_Dial0|RealVal=5,25
3_Dial58|RealVal=5,25
3_Dial64|RealVal=5,25

4_Dial0|RealVal=5.5,25
4_Dial58|RealVal=5.5,25
4_Dial64|RealVal=5.5,25

5_Dial0|RealVal=6,25
5_Dial58|RealVal=6,25
5_Dial64|RealVal=6,25

6_Dial0|RealVal=6.5,25
6_Dial58|RealVal=6.5,25
6_Dial64|RealVal=6.5,25

7_Dial0|RealVal=3.5,25
7_Dial58|RealVal=3.5,25
7_Dial64|RealVal=3.5,25


The German torpedo depth keeping issue resulted in a torpedo being up to and even over 2.7 metres (8 feet) deeper than it was set at.

The cause of the depth keeping issue was not discovered until January 1942, when U-94 performed a field inspection on a torpedo which was very much against Standard Operational Procedure.

A fix for the non-air tight balance chamber was not available until towards the end of 1942. The issue was most likely to occur after a u-boat had been submerged for extended periods of time, due to the increase of pressure inside the u-boat.

The depth keeping issue also exaggerated the magnetic pistol failures, With the torpedo running deeper than intended the magnetic pistol might fail to trigger, or if it did, was at a depth that greatly lessened the explosive force.

Of course, the depth keeping issue also cause torpedoes set for impact depth to run under the intended target.

Deep running torpedoes are not modelled in Silent Hunter III.