Bismarck vs Yamato, or, precision gunnery.

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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Gawdzilla Sama » Sun May 06, 2012 10:17 pm

Svartalf wrote:
Gawdzilla wrote:
Svartalf wrote:So it committed the navy equivalent of a banzai charge?
Heard of "crossing the T"? There were some very hostile old battleships at the end of the Suriago Strait.
I hadn't, but I learn.
It was murder in the days of the sail navies. With radar and 14" guns, it was very, very, bad.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Thumpalumpacus » Sun May 06, 2012 10:21 pm

It boils down to gun-laying. It's hard to say, because so much of a battle is intangibles; but assuming identical crew efficiency, the Yamato, clearly.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Gawdzilla Sama » Sun May 06, 2012 10:26 pm

Thumpalumpacus wrote:It boils down to gun-laying. It's hard to say, because so much of a battle is intangibles; but assuming identical crew efficiency, the Yamato, clearly.
I said, "all else being equal" earlier. If the crews have equal skills the best machinery wins. The Big Y was the better machine. Chuck Yeager took a F-87 against a surrendered MiG-15 and beat it. Then they swapped planes and Yeager won again.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Thumpalumpacus » Sun May 06, 2012 10:43 pm

Gawdzilla wrote:
Thumpalumpacus wrote:It boils down to gun-laying. It's hard to say, because so much of a battle is intangibles; but assuming identical crew efficiency, the Yamato, clearly.
I said, "all else being equal" earlier. If the crews have equal skills the best machinery wins. The Big Y was the better machine. Chuck Yeager took a F-87 against a surrendered MiG-15 and beat it. Then they swapped planes and Yeager won again.
Yeah, machine isn't nearly as important as the man using it.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Gawdzilla Sama » Mon May 07, 2012 12:49 am

Thumpalumpacus wrote:
Gawdzilla wrote:
Thumpalumpacus wrote:It boils down to gun-laying. It's hard to say, because so much of a battle is intangibles; but assuming identical crew efficiency, the Yamato, clearly.
I said, "all else being equal" earlier. If the crews have equal skills the best machinery wins. The Big Y was the better machine. Chuck Yeager took a F-87 against a surrendered MiG-15 and beat it. Then they swapped planes and Yeager won again.
Yeah, machine isn't nearly as important as the man using it.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Warren Dew » Mon May 07, 2012 12:59 am

Svartalf wrote:This is where I call on military experts here... given a moving target and the precision required to get a hit at a precise height, especially since entering the water would wreak hell with the shell's ballistics, just how likely is it that a battleship could have deliberately hit a target below said waterline? Would that be even feasible?
Deliberately targeting the area below the waterline would have been unlikely to work.

The issue is that, while one can get very fine control over azimuth in naval gunnery - the compass direction to the target - elevation is subject to bigger variations, both in terms of calculation of the effects and in terms of the effects of roll and pitch.

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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Gawdzilla Sama » Mon May 07, 2012 1:07 am

Warren Dew wrote:
Svartalf wrote:This is where I call on military experts here... given a moving target and the precision required to get a hit at a precise height, especially since entering the water would wreak hell with the shell's ballistics, just how likely is it that a battleship could have deliberately hit a target below said waterline? Would that be even feasible?
Deliberately targeting the area below the waterline would have been unlikely to work.

The issue is that, while one can get very fine control over azimuth in naval gunnery - the compass direction to the target - elevation is subject to bigger variations, both in terms of calculation of the effects and in terms of the effects of roll and pitch.
Warren, flat trajectory rounds, i.e., close up, are capable of doing this if the right shells are used.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Thumpalumpacus » Mon May 07, 2012 1:18 am

Gawdzilla wrote:"He who has no heart for the fight, let him depart! I will not stay him. Nay, I will give him coins for his purse."

Or, as Pa Thump used to say, "Boy, it ain't the size of the dog in the fight, it's the size of the fight in the dog."

I look at guys like Lord Nelson or the Viscount Cunningham and am just happy I never pissed them off.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Warren Dew » Mon May 07, 2012 1:35 am

Gawdzilla wrote:
Warren Dew wrote:
Svartalf wrote:This is where I call on military experts here... given a moving target and the precision required to get a hit at a precise height, especially since entering the water would wreak hell with the shell's ballistics, just how likely is it that a battleship could have deliberately hit a target below said waterline? Would that be even feasible?
Deliberately targeting the area below the waterline would have been unlikely to work.

The issue is that, while one can get very fine control over azimuth in naval gunnery - the compass direction to the target - elevation is subject to bigger variations, both in terms of calculation of the effects and in terms of the effects of roll and pitch.
Warren, flat trajectory rounds, i.e., close up, are capable of doing this if the right shells are used.
Battleships rarely if ever got that close.

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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Gawdzilla Sama » Mon May 07, 2012 1:52 am

Warren Dew wrote:
Gawdzilla wrote:
Warren Dew wrote:
Svartalf wrote:This is where I call on military experts here... given a moving target and the precision required to get a hit at a precise height, especially since entering the water would wreak hell with the shell's ballistics, just how likely is it that a battleship could have deliberately hit a target below said waterline? Would that be even feasible?
Deliberately targeting the area below the waterline would have been unlikely to work.

The issue is that, while one can get very fine control over azimuth in naval gunnery - the compass direction to the target - elevation is subject to bigger variations, both in terms of calculation of the effects and in terms of the effects of roll and pitch.
Warren, flat trajectory rounds, i.e., close up, are capable of doing this if the right shells are used.
Battleships rarely if ever got that close.
Yep, and when they did things would get frisky.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Thumpalumpacus » Mon May 07, 2012 2:34 am

I was under the impression that plunging fire was preferred, anyway, due to the relative thinness of deck armor, especially once designers started using bunkerage as additional side protection.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Gawdzilla Sama » Mon May 07, 2012 2:59 am

Thumpalumpacus wrote:I was under the impression that plunging fire was preferred, anyway, due to the relative thinness of deck armor, especially once designers started using bunkerage as additional side protection.
It depends on the range involved. Very long ranges give the benefit of acceleration due to gravitation, one reason the Japanese level bombers at Pearl Harbor attacked from 10,000 feet rather than the more accurate 5,000. When you got really close, say under 4,000 yards, you didn't get plunging fire. In those cases some navies used specially streamlined shells that would cut through the water and hit below the armor belt.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Thumpalumpacus » Mon May 07, 2012 3:23 am

Cool, thanks.

I know the IJN in particular trained for underwater hits, at least according to Hornfischer's Last Stand of the Tin Can Sailors, but I didn't know that other navies did so as well, nor that they had specialized shells for it. Thanks.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Gawdzilla Sama » Mon May 07, 2012 9:25 am

Thumpalumpacus wrote:Cool, thanks.

I know the IJN in particular trained for underwater hits, at least according to Hornfischer's Last Stand of the Tin Can Sailors, but I didn't know that other navies did so as well, nor that they had specialized shells for it. Thanks.
Have you read his book on the Guadalcanal campaign? He's one of the few authors I will buy in hardcover these days.
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Re: Bismarck vs Yamato, or, precision gunnery.

Post by Thumpalumpacus » Mon May 07, 2012 9:40 am

No, I haven't, but I will look for it. Last Stand was a great read.
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