[joefremont]

The MK16 was infact a modified MK14 with H2O2 instead of the air bottle and a larger warhead. My experience using it in the game is that it does have a smaller wake as the targets less likely to try to evade them than the MK14 but I did read that later in the war the Japanese installed sonar on merchant ships so that even if the MK16 was wakeless it was not silent and any merchant that heard a torpedo in the water is going to start turning to evade it, that may be what your noticing as the targets 'detecting' the torpedo.