Pistolero
Well-Known Member
Ha! if that isn't way off topic. But, I mentioned in Ben's thread a friend who told a story to my USN father when I was a teen, overheard by me.
My friend was a USN Chief Gunners Mate on the Fletcher-class DD (destroyer) the USS O'Bannon. In a night surface action, what I remember him
telling my father was - approximately. This would have been about 1968, but as I remember it.
"It was a night battle off of Guadalcanal, and we got in a terrible fight with Jap cruisers and battle wagons. My skipper got us in really close to a
battlewagon, inside a thousand yards. The normal firing mechanisms had been shot away, so I set the gyro course as best as I could judge it,
and then lined up that Jap battle wagon by sighting down the tubes. I had to fire them with a wooden mallet, it set off blackpowder cartridges
which launched them. I got two hits on that damned Jap b*****d of five torpedoes, and covered in packing grease blowback every time I fired one."
He was clearly fiercly proud of that achievement.
The Presidential Unit Citation for USS O'Bannon, citing the action off of Guadalcanal, says that the O'Bannon put three torpedoes into the Japanese
Batleship IJN Hei. In other sources, the Hei was damaged in the night action (no precise causes sourced in most reports) and couldn't get away,
and was sunk in the morning by US aviation assets.
From the Presidential Unit Citation: http://destroyerhistory.org/fletcherclass/index.asp?pid=45008
"Launching a close range attack on hostile combatant ships off Guadalcanal on the night of November 13, 1942, the O’BANNON scored three torpedo hits on a Japanese battleship, boldly engaged two other men o’ war with gunfire and retired safely in spite of damage sustained. "
So, I wondered, how much of all this is provably true, at this late date with all the people there long dead and only my memory of his brief description
as "testimony"?
So, I started looking online. I found the Presidential Unit Citiation, linked above, and then I found out that the Fletcher-class DDs used Mk15 21" torpedoes.
Couldn't find much on the launchers except some pix, five tubes on a turret, with a cover on top for the local firing positions.
Then I found the mother lode! https://maritime.org/doc/destroyer/ddtubes/index.htm
A copy of the original USN manual, " 21-inch Above Water Torpedo Tubes, Mark 14 and mods and Mark 15 and Mods - description, operation and maintenance.
All the gory details of exactly how this system worked. So, I dove in to learn about it.
I already knew that there was a complex electro-mechanical computer (on the bridge, I think) which the torpedo officer could enter ship's heading and
speed, the target heading and speed, and range, and the torpedo computer would calculate a collision course speed and heading, and sent that info
to the torpedoes. They could be electrically launched from the bridge, an electrical charge firing the primer on the large BP cartridge. And there was
a backup remote hydraulic firing mechanism which would trigger a hammer to hit an exposed firing pin, powered by a spring to fire it remotely by
hydraulics, presumably if the electrics were shot out. And finally there was a cable operated firing system, which could be fired by the two torpedomen
sitting on the mount, where they had cranks to set the torpedo gyro heading and select the speed. They could pull a handle to fire each of the five tubes.
So, what about my friend's story of firing them with a mallet? Is that possible or just an old sea story? Looking closer, the firing pin projects out of the back
of the firing chamber, and the safety is to pull the hammer back (it slides on a rod rather than pivots) and rotate it 90 deg left so it cannot hit the firing pins.
So, if the electrical remote firing was out, and the Torpedo Director was offline, then remote hydraulic firing could be tried. If that was out, the manual, on the
mount cable firing could be tried. If they were shot away or damaged so they couldn't be used....what to do? Triply redundant systems....all gone. But that
firing pin is just sticking out there. looks like about 4 1/2 ft off the deck. Hit it with a mallet and the torpedo will fire.
No doubt in my mind that Chief Gunner's Mate Spracklin was telling the straight story of a "not in the book" method of desperation firing of DD torpedoes
when all three of the firing circuits are shot away.
Some pix - first a Fletcher-class DD, I have added an arrow to show one of the two five tube torpedo mounts. The other is hidden by a boat fwd of the
clearly seen one.
Some details on the mount, which is rotated sideways to fire.
The firing mechanism - in operation.
See how the hammer swings sideways for safety? When it is "safe" a mallet hit on the FP should fire it just fine.
I hope this interests at least a few here.
Bill
My friend was a USN Chief Gunners Mate on the Fletcher-class DD (destroyer) the USS O'Bannon. In a night surface action, what I remember him
telling my father was - approximately. This would have been about 1968, but as I remember it.
"It was a night battle off of Guadalcanal, and we got in a terrible fight with Jap cruisers and battle wagons. My skipper got us in really close to a
battlewagon, inside a thousand yards. The normal firing mechanisms had been shot away, so I set the gyro course as best as I could judge it,
and then lined up that Jap battle wagon by sighting down the tubes. I had to fire them with a wooden mallet, it set off blackpowder cartridges
which launched them. I got two hits on that damned Jap b*****d of five torpedoes, and covered in packing grease blowback every time I fired one."
He was clearly fiercly proud of that achievement.
The Presidential Unit Citation for USS O'Bannon, citing the action off of Guadalcanal, says that the O'Bannon put three torpedoes into the Japanese
Batleship IJN Hei. In other sources, the Hei was damaged in the night action (no precise causes sourced in most reports) and couldn't get away,
and was sunk in the morning by US aviation assets.
From the Presidential Unit Citation: http://destroyerhistory.org/fletcherclass/index.asp?pid=45008
"Launching a close range attack on hostile combatant ships off Guadalcanal on the night of November 13, 1942, the O’BANNON scored three torpedo hits on a Japanese battleship, boldly engaged two other men o’ war with gunfire and retired safely in spite of damage sustained. "
So, I wondered, how much of all this is provably true, at this late date with all the people there long dead and only my memory of his brief description
as "testimony"?
So, I started looking online. I found the Presidential Unit Citiation, linked above, and then I found out that the Fletcher-class DDs used Mk15 21" torpedoes.
Couldn't find much on the launchers except some pix, five tubes on a turret, with a cover on top for the local firing positions.
Then I found the mother lode! https://maritime.org/doc/destroyer/ddtubes/index.htm
A copy of the original USN manual, " 21-inch Above Water Torpedo Tubes, Mark 14 and mods and Mark 15 and Mods - description, operation and maintenance.
All the gory details of exactly how this system worked. So, I dove in to learn about it.
I already knew that there was a complex electro-mechanical computer (on the bridge, I think) which the torpedo officer could enter ship's heading and
speed, the target heading and speed, and range, and the torpedo computer would calculate a collision course speed and heading, and sent that info
to the torpedoes. They could be electrically launched from the bridge, an electrical charge firing the primer on the large BP cartridge. And there was
a backup remote hydraulic firing mechanism which would trigger a hammer to hit an exposed firing pin, powered by a spring to fire it remotely by
hydraulics, presumably if the electrics were shot out. And finally there was a cable operated firing system, which could be fired by the two torpedomen
sitting on the mount, where they had cranks to set the torpedo gyro heading and select the speed. They could pull a handle to fire each of the five tubes.
So, what about my friend's story of firing them with a mallet? Is that possible or just an old sea story? Looking closer, the firing pin projects out of the back
of the firing chamber, and the safety is to pull the hammer back (it slides on a rod rather than pivots) and rotate it 90 deg left so it cannot hit the firing pins.
So, if the electrical remote firing was out, and the Torpedo Director was offline, then remote hydraulic firing could be tried. If that was out, the manual, on the
mount cable firing could be tried. If they were shot away or damaged so they couldn't be used....what to do? Triply redundant systems....all gone. But that
firing pin is just sticking out there. looks like about 4 1/2 ft off the deck. Hit it with a mallet and the torpedo will fire.
No doubt in my mind that Chief Gunner's Mate Spracklin was telling the straight story of a "not in the book" method of desperation firing of DD torpedoes
when all three of the firing circuits are shot away.
Some pix - first a Fletcher-class DD, I have added an arrow to show one of the two five tube torpedo mounts. The other is hidden by a boat fwd of the
clearly seen one.
Some details on the mount, which is rotated sideways to fire.
The firing mechanism - in operation.
See how the hammer swings sideways for safety? When it is "safe" a mallet hit on the FP should fire it just fine.
I hope this interests at least a few here.
Bill
Attachments
Last edited: