"Bastard" Electro U-boats From Early 1943?

[kfbr392]

I am surprised to see an Ursel installation on the foredeck in that artists impression. That is not in line with what Rössler wrote. I read of rear deck only.
In terms of aiming, it’s actually quite simple. The U-boat, using a special passive hydrophone called “SP-Gerät” mounted on the rear deck, turns its stern precisely towards the approaching destroyer. Once the destroyer is 45° (or similar angle, but presumably fixed) up and straight behind, as indicated by SP-Gerät, a missile is launched. You aim with the whole boat. After launch, flank speed, full rudder, and change of depth.
The Germans were not aware of Hedgehog/Squid, though IIRC…

[ThatZenoGuy]

I am surprised to see an Ursel installation on the foredeck in that artists impression. That is not in line with what Rössler wrote. I read of rear deck only.
In terms of aiming, it’s actually quite simple. The U-boat, using a special passive hydrophone called “SP-Gerät” mounted on the rear deck, turns its stern precisely towards the approaching destroyer. Once the destroyer is 45° (or similar angle, but presumably fixed) up and straight behind, as indicated by SP-Gerät, a missile is launched. You aim with the whole boat. After launch, flank speed, full rudder, and change of depth.
The Germans were not aware of Hedgehog/Squid, though IIRC…

That's the issue with the system though, Hedgehog isn't especially long ranged, but I wouldn't want to be remotely close to a ship armed with it if I was in a submarine, Ursel or not.

Germans seemed to REALLY be good at making passive hydrophones which could make targetting solutions.

[kfbr392]

any WW2 sub is highly vulnerable to its enemies’ weapons. meaning it does not have the protection, speed and gun firepower of surface combattants.

The best option is always to remain undetected.
The second best option is to evade once detected.
The third best option is to hit the enemy just before he’s hitting you.

Ursel was not for hunting destroyers. It was meant to be a desperate lucky punch moments before the depth charges were released. Something to strike back with during the otherwise help- and defenseless hours of being depth charged dozens or even hundreds of times.

yes, Germany was leading in the area of passive underwater listening.

[Destroyer500]

Was there ever a weapon the subs could use to hit a ship exactly vertically below it ? Would such a weapons even make sense ?

[ThatZenoGuy]

Was there ever a weapon the subs could use to hit a ship exactly vertically below it ? Would such a weapons even make sense ?

Typically if a destroyer is right above you, that...Is often telling that you're going to be very dead very soon.

[Destroyer500]

Typically if a destroyer is right above you, that...Is often telling that you're going to be very dead very soon.

Even if youre really deep bellow it
?

[ThatZenoGuy]

Typically if a destroyer is right above you, that...Is often telling that you're going to be very dead very soon.

Even if youre really deep bellow it
?

Well, that might depend on the destroyer in question, and what bearing it is going. XD

[Destroyer500]

Well, that might depend on the destroyer in question, and what bearing it is going. XD

Well yea sure but my main question is if what i propose is even barely practical ?