"Breaking in" a convoy?

[Kuzz]

Hi everyone

It was a long time since I logged in here but I have recently started playing Silent Hunter again, mostly because of reading the new outstanding Swedish book “Wolves of the Sea” by Michael Tamelander & Jonas Hård af Segerstad. Now I have a question towards you veterans here:

In the book there are several events in where the German U-boats “break in” to a convoy during their nights attack. They approach with decks awash at a cloudy night and sneak into the midst of the convoy, where the stay at the surface and fire off all their torpedoes. As long as no ship blasts into fire, illuminating the scene, they stay at the surface, running at desired speed while reloading their tubes (they are not heard by hydrophone due to the rest of the convoys screws and ASDIC cannot detect them due to them being surfaced). In more than one occasion the U-boat is able to fire off all their torpedoes, sinking more than 5 or 6 ships before slowly moving away, this at the surface as well.

I have tried this in late 41 and early 42 in the game, and while I am doing it submerged, it does work exceptionally well. The destroyers search the perimeter around the convoy and often disappears way behind into the darkness. But does anyone know if this is possible to do decks awash, just as they did in real life? I am running the Grey Wolves Supermod.

A little reminder as well. On the community wiki it says the following about convoy attacks with torpedoes:

Originally Posted by Community Wiki

Try and get right between the columns. This way, you don't need to use any trigonometry and TDC. You can easily estimate the gyro angle and quickly fire off both bow and stern tubes very accurately. Now keep in mind, the destroyers will DEFINITELY know where you are now.

According to my tests, they don’t! And this was a realistic tactic until the invention of the radar.

Regards
Kuzz