[Jimbuna]

Originally Posted by K-61

Something else to be aware of when using magnetics is the sea state. In heavy seas, ships can pitch up and down severely, thus their effective draught changes considerably. If you set a magnetic pistol for .5 or 1 M the torpedo could sail harmlessly below it if the ship pitches up as the torpedo arrives. I always use impact pistols in such weather and set them more shallow than I normally would. Rough seas also cause a much higher rate of premature detonations with magnetics, at least in the first couple of years of the war. Setting running depths is a bit of an art but you soon learn how to do it just so. Just beware not to set them too shallow or you risk them broaching, becoming airborne and having the possibility of losing an accurate course as they leave and re-enter the water.

Sound advice