The mysterious Ghost Swimmers of SH3... O_o

I would love to see those, and even more to see them -ingame- with my periscope.
I only have GWXv3 from the list, and I think they arent made any swimmers.
(took out M.E.P.v3, as the 20km is too mutch for me. Prefer to hear the targets first, -then- see them.)
Im sure I install the thing thats responsible for this...
Nice discovery!
Gargamel, you wouldnt shoot a 88's panzerabwehrkanone with High explosives to those poor souls??? You cant have a heart for it!!! (Not to mention, that the shells arent detonate on water impact)
Do it with the Flak gun....
XD
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Oberleutnant z. s. Daniel Wolf
87% realism (100%-Cams to watch burning targets,

and torpedoes run for fun..)
SH5 The Wolves of Steel Megamod- Realnav+
Full manual targeting. -no contact updates, no map help.
U-50 forever - still a Smiling bastard