Plan Z

Discussions on all (non-biographical) aspects of the Kriegsmarine except those dealing with the U-Boat forces.
User avatar
Terry Duncan
Host - WW1 section
Posts: 4320
Joined: 13 Jun 2008 22:54
Location: Kent

Re: Plan Z

Postby Terry Duncan » 05 Jul 2017 10:09

I would be inclined to agree that very few hits are to be expected above 24,000 yards, which is why I questioned the figure of '15,5 percent' Thoddy had quoted. In theory, however, it is possible for Tirpitz to remain out of the range of Massachusetts and fire shells at her hoping to hit something vital before the ammunition runs out.

Thoddy
Member
Posts: 27
Joined: 18 Jun 2017 11:37
Location: Germany

Re: Plan Z

Postby Thoddy » 07 Aug 2017 13:26

the 15.5 percent hit propabilty describes the capabilities of the gun, -IF Target was straddled (MPI on target)-.

At 25 km the flighttime of the german 38 cm shell was in the order of 42 seconds, errors in the chain of target measurements, firing solution, inner ballistics, athmospheric conditions, maneuvering of the target ... are likely to make a straddle very diffucult. Even a one Sigma MPI rangescatter deviation may reduce the hit probability to about 1,5 to 2,5 percent.

And yes, the summation of difficulties at long range are likely to cause the magazines running out of ammo.

Fireeffect tables of Bismarck
http://forum-marinearchiv.de/coppermine ... %20Tir.PDF

In a fight one has to differenciate between different types of action (delaying and decisive action).
In the delaying action type Bismarck would likely choose the upper limit of the own outer immunity zone to keep hit % low and in an decisive action Bismarck would likely seek for a battle within the inner zone of immunity of the enemy.
"Meine Herren, es kann ein siebenjähriger, es kann ein dreißigjähriger Krieg werden – und wehe dem, der zuerst die Lunte in das Pulverfaß schleudert!"

Thoddy
Member
Posts: 27
Joined: 18 Jun 2017 11:37
Location: Germany

Re: Plan Z

Postby Thoddy » 17 Aug 2017 14:21

Only a silly question. Why Plan Z and not Plan X or A or C?


the naval command checked various alternatives, including X-Plan and Y-Plan.

the Z-Plan became valid per 12/1938 - based on the actual shipbuilding and supplier(armor, weapons,equipment) capacities of Germany
"Meine Herren, es kann ein siebenjähriger, es kann ein dreißigjähriger Krieg werden – und wehe dem, der zuerst die Lunte in das Pulverfaß schleudert!"


Return to “Kriegsmarine surface ships and Kriegsmarine in general”

Who is online

Users browsing this forum: CommonCrawl [Bot]