WW II Historical Thread, Discussion, Pics, Videos

delft

Brigadier
VEjnYoH.jpg

Me 110 flying somewhere over the Mediterranean


Back to bottling my Grenache
I'm looking at the ship under the wing of Me-110. What is she? A cable layer?
 
...but since they will be testing soon, I am hoping that the pictures of those tests give us an answer to your question.

while waiting :) I searched Campbell's book for the highest muzzle velocities of battleships' guns; if I didn't miss anything, there would happen to be two winners: the French 13" and Italian 15" both 870 m/s ... the record would hold the 1919 USN 18" after being converted to 16" Mk 4/0: 902 m/s (never put on a ship though) ... as you might guess, all these guns had barrel length in excess of fifty calibers

P.S. For comparison: 762 m/s the USN 16" Mk 7
 

thunderchief

Senior Member
while waiting :) I searched Campbell's book for the highest muzzle velocities of battleships' guns; if I didn't miss anything, there would happen to be two winners: the French 13" and Italian 15" both 870 m/s ... the record would hold the 1919 USN 18" after being converted to 16" Mk 4/0: 902 m/s (never put on a ship though) ... as you might guess, all these guns had barrel length in excess of fifty calibers

P.S. For comparison: 762 m/s the USN 16" Mk 7

You forgot good old German tech :D

nose- and base-fused HE shell with ballistic cap (Si-Gr L/4.5 Bdz u. Kz (m.Hb)) (full load) 495 kg (1,091 lb) 69 kg (152 lb) TNT 1,050 m/s (3,400 ft/s) 55.7 km (34.6 mi)
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Miragedriver

Brigadier
THE BRITISH ARMY IN BURMA, MARCH 1945, The British commander and Indian crew of a Sherman tank of the 9th Royal Deccan Horse, 255th Indian Tank Brigade, encounter a newly liberated elephant on the road to Meiktila, 29 March 1945.

Colorized
clFksAy.jpg


Original black and white
fKqWig1.jpg




Back to bottling my Grenache
 
You forgot good old German tech :D

nose- and base-fused HE shell with ballistic cap (Si-Gr L/4.5 Bdz u. Kz (m.Hb)) (full load) 495 kg (1,091 lb) 69 kg (152 lb) TNT 1,050 m/s (3,400 ft/s) 55.7 km (34.6 mi)
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as I said, I just checked battleships' guns in Campbell's Naval Weapons of WW2 ... for the German 15" (which he calls "SKC/34"): 820 m/s according to the table in the middle of p. 229; to me, the 1050 m/s value pertains to coast guns (p. 230: "Coast-defence guns also had a 495 kg (1019lb) HE shell with nose and base fuses. Thus muzzle velocity with this was 1050 m/s" etc.) but feel free to correct me :) Anyway, perhaps the biggest difference between the naval and coastal versions of that gun was the shell weight (800 against "just" 495 kg)
 
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thunderchief

Senior Member
as I said, I just checked battleships' guns in Campbell's Naval Weapons of WW2 ... for the German 15" (which he calls "SKC/34"): 820 m/s according to the table in the middle of p. 229; to me, the 1050 m/s value pertains to coast guns (p. 230: "Coast-defence guns also had a 495 kg (1019lb) HE shell with nose and base fuses. Thus muzzle velocity with this was 1050 m/s" etc.) but feel free to correct me :) Anyway, perhaps the biggest difference between the naval and coastal versions of that gun was the shell weight (800 against "just" 495 kg)

You are technically right - coastal and battleship guns were essentially the same (coastal guns were surplus battleship guns) , but coastal guns were latter modified with larger chamber to fire lighter shells (Siegfried) . I suppose that modification was never carried out on Tirpitz , and
Gneisenau was not rearmed with 3.8 cm guns .

Still, at least theoretically , those guns were battleship guns and they did have large muzzle velocity so I think it is fair to include them in the list :)
 
first to Jeff: I'll go obviously off-topic but I like the subject :) so will you please move it to
World War II Historical Thread
so that anybody could go on ... thanks

... I suppose that modification was never carried out on Tirpitz , ...

but why would they do it? (I assume the Tirpitz in Norway with opponents like the King George V or, alas, the Iowa ... as I said, the naval gun the Germans had fired 800 kg shells, coastal: 495 kg; from what I figured, the best chance for the Tirpitz would have been bad weather somewhere around the Arctic Circle and sneaking close, hitting fast)

and by the way increasing muzzle velocity
  • increased the envelope of the salvo
  • increased the wear of the barrel
  • while increasing the maximal distance, it would cause problems for the plunging fire (as its distances would be that high that you could hardly direct it in real time :)
(I started to talk about high muzzle velocities because of the rail-gun)

Still, at least theoretically , those guns were battleship guns and they did have large muzzle velocity so I think it is fair to include them in the list :)

the problem is they would win :)
 
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