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Most awesome "boat" ever

jetboatperformance

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Of all the boats and ships this beast has always been my favorite , apparently Its just undergone a 10 million dollar resto , I worked with a guy as a kid that claimed to have spent time on it and had great stories about firing a projectile the weight of a Volkswagon 🤷‍♂️



AA1rGHjV.jpg
 

Sharky

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There is a great you tube channel done by the curator all about the USS NJ. Including the dry docking & repainting.

He takes you EVERYWHERE on and in the ship and goes into great details.
 

stephenkatsea

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I had the amazing pleasure of seeing the New Jersey and the Missouri at sea. First was the NJ doing live fire sea trials before deploying to Vietnam. Watched the sunrise over San Clementine Island with the NJ, running at speed, between us and the island. Later that day we were miles away when she began shelling the island with her BIG guns. It literally rattled your bones.

Next was the Missouri as she entered San Diego Bay. Her decks lined with Navy and Marines in dress whites. Seeing her coming straight at us is a sight I’ll never forget. The beam of those ships were like no other.
 

jetboatperformance

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I had the amazing pleasure of seeing the New Jersey and the Missouri at sea. First was the NJ doing live fire sea trials before deploying to Vietnam. Watched the sunrise over San Clementine Island with the NJ, running at speed, between us and the island. Later that day we were miles away when she began shelling the island with her BIG guns. It literally rattled your bones.

Next was the Missouri as she entered San Diego Bay. Her decks lined with Navy and Marines in dress whites. Seeing her coming straight at us is a sight I’ll never forget. The beam of those ships were like no other.
I seem to recall in the early days they sent the loads with 100lb sacks of black powder eeeek !
 

stephenkatsea

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When I toured one of our Trident Subs, the Capt told me the accuracy of their weapons depended, to a larage extent, on the ability to know exactly where the weapon had been launched. The 3 dimensional station keeping abilities of their boat were particularly important when they did ‘ripple/multiple’ launches. I believe these battleships did not have station keeping abilities. Perhaps others may know better. At best, the New Jersey may have had GPS when deployed to Vietnam?
 

Desert Whaler

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My Brother in Law Retied Naval Comander . . . told me once how much that (or a similar ship) ship moved sideways from the recoil when they fired all the guns from one side . . . don't remember the actual number, but it was a lot more than I expected.
 

spectra3279

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They move roughly 18 feet for every round fired. So a single round. 18ft 2 rounds will move it about 30ft. It's also been said if all guns fired at the same time to one side, it would roll over.
 

4Waters

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They move roughly 18 feet for every round fired. So a single round. 18ft 2 rounds will move it about 30ft. It's also been said if all guns fired at the same time to one side, it would roll over.
That's why they are so wide so they can't roll over when firing all guns from the same side
 

Cray Paper

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One of my younger brothers joined the navy in 1989 and served about 12 years. He was on the Nimitz for most of that time and was in the Gulf and Kosovo wars. Nimitz had marines onboard and some of them talked about a US battleship laying down precision destruction from 20+ miles away to clear the path for them. Not rockets, big ass artillery rounds surgically placed that obliviated the tanks and opposing forces. I couldn't find it, but back in the early 2000's there was a video from the mid 90's of young navy personnel on deck of a battle ship when it fired several of it's main guns, they were dumbfounded at the ferocity of those canons going off.
 

rrrr

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When I toured one of our Trident Subs, the Capt told me the accuracy of their weapons depended, to a larage extent, on the ability to know exactly where the weapon had been launched. The 3 dimensional station keeping abilities of their boat were particularly important when they did ‘ripple/multiple’ launches. I believe these battleships did not have station keeping abilities. Perhaps others may know better. At best, the New Jersey may have had GPS when deployed to Vietnam?
No, GPS wasn't deployed until after the Iowa class battleships were decommissioned. They relied on a mechanical analog fire control computer that used cams and gears to arrive at a firing solution. It was made by the Ford Instrument Company (not the automobile manufacturer). The fire control computer was invented by a British admiral around 1905, with successive generations becoming more and more accurate.

It performed several separate computing solutions: distance to target, target speed, target course, own ship's speed, own ship's course, and closing rate between target and own ship. It then sent commands to the turrets that automatically aimed range by barrel elevation and azimuth by slewing the turret.

The computer also had a gyroscopic function called the stable element, which detected the rolling motion of own ship, and compensated for it by continually changing the gun elevation. That kept the guns at the same range elevation with respect to the horizon that the fire control computer had determined.

The system could accurately place fire on targets over twenty miles away. While the outdated communications equipment being used by the enlisted talkers indicate the photo below may have been taken during WWII, the fire control computer remained essentially the same until the early 90s, when the Iowa class was removed from service.

If you want to learn about these mechanical integrating computers, this document produced by MIT explains how they work.


The mechanical analog computers of Hannibal Ford and William Newell

FordMk1Rangekeeper.jpg


I've done a little reading about battleship history. These are some of the books I've collected over the years.

1000002626.jpg
 
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4Waters

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They move roughly 18 feet for every round fired. So a single round. 18ft 2 rounds will move it about 30ft. It's also been said if all guns fired at the same time to one side, it would roll over.
Here are a couple pics of the New Jersey.
ndm7u58orcl51.jpg


You can see in the water how much the ship move sideways
4F07_Qem8OADryns-ykq6HUeauCkW8eQZgk3g7M5YOY.jpg
 

rrrr

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4Waters

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They didn't move when the guns were fired, and firing all nine 16" guns on one side won't cause the ship to roll over. They weighed over 60,000 tons when combat loaded, the shells weighed about 2,700 lbs each.

I know they did roll over, post 15 but in the pic it appears the ship moved sideways and I would be hard pressed to believe that they didn't move

4F07_Qem8OADryns-ykq6HUeauCkW8eQZgk3g7M5YOY.jpg
 

rrrr

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I know they did roll over, post 15 but in the pic it appears the ship moved sideways and I would be hard pressed to believe that they didn't move

View attachment 1438815
Try clicking on the link I posted. You're seeing the results of rapidly expanding gases that just fired shells at 2,500 feet per second inducing movement of the air around the ship, which disturbs the water. I can promise those ships didn't move.
 

4Waters

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You're looking for the moon landing thread.

😁
That energy has to go somewhere, I understand that they have 48" of recoil but that energy still has to go somewhere and that somewhere is into the hull that floats. I don't see the water being broiled up at the tip of the bow. Until they fire up NJ and take her out with modern GPS positioning and fire all guns off one side to prove that she doesn't move my opinion is she moves.
 

rrrr

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The ship's 60,000 ton displacement at combat loading equals 120,000,000 lbs. The nine 16" armor piercing shells fired at once weigh 24,300 lbs. The math showing the effect of the salvo on the ship is contained in the link I posted. While it may be hard to understand, it's accurate.

In addition to the recoil absorption, the guns don't fire at the same time in an all gun salvo. There's a .06 second firing delay between the three guns in a turret, and a .40 second firing delay between each of the three turrets.
 
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4Waters

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The ship's 60,000 ton weight at combat loading equals 120,000,000 lbs. The nine 16" armor piercing shells fired at once weigh 24,300 lbs. The math showing the effect of the salvo on the ship is contained in the link I posted. While it may be hard to understand, it's accurate.

In addition to the recoil absorption, the guns don't fire at the same time in an all gun salvo. There's a .06 second firing delay between the three guns in a turret, and a .40 second firing delay between each of the three turrets.
I move when I shoot an AR, that little 55g round transfers that energy into the recoil spring, which in turn transfers into my shoulder causing me to move since I am not a solidly mounted immovable object. The energy has to go somewhere and the ship is not solidly mounted immovable object.
 

rrrr

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Same here and especially after talking to people who were on them
Many battleship crew members believe it, but that doesn't mean its true. It doesn't happen. Think about this...

Not only does the ship displace 60,000 tons, there's about 37' of battleship under the water. The Iowas are about 880' in length. For it to move 30', it would have to push 924,000 cubic feet of water. A cubic foot of water weighs 62.4 lbs, so 924,000 CF of water totals 57,657,600 lbs. The guns are an ant on the ass of an elephant compared to that.

The New Jersey fired a couple thousand times during WWII. Those nine guns firing 32,400 lbs of shells aren't going to move the ship. The recoil system absorbs the energy produced by the cordite. If it didn't, if the ship moved 30' instantaneously, it would wreck the guns. It would also destroy the turbines, fracture the steam piping operating at 600 PSI and 800°, and tear apart the boilers. Every crew member on the ship would fall on his ass.

But the proof for those that doubt what I'm saying, let's watch this video taken during firing. The ship is underway. It doesn't move sideways. Besides that, if it did, then the firing solution would have to be recalculated. It's common knowledge a good gun crew could fire two rounds a minute, it was done repeatedly during WWII. How would that fire be accurate at distances up to twenty miles if the ship moved every time a single gun fired? Answer: it wouldn't.


Don't take my word for it. Do a freekin' Google search.
 

spectra3279

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How much force do you think it takes to toss a 2200# object upto 26 miles?
 

Sawtooth

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So if this ship in question and others like it supposedly move sideways 15 or 18 or however many feet when the guns are fired how come there is no tsunami type wave on the opposite side of the ship in any pictures. That’s a lot of mass that has to displace/push the water out of the way on the opposite side of the ship the guns are on. You know, the ole for every action there is a opposite and greater reaction deal 🌊.
 

4Waters

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So if this ship in question and others like it supposedly move sideways 15 or 18 or however many feet when the guns are fired how come there is no tsunami type wave on the opposite side of the ship in any pictures. That’s a lot of mass that has to displace/push the water out of the way on the opposite side of the ship the guns are on. You know, the ole for every action there is a opposite and greater reaction deal 🌊.
I'm not saying they move that far but I do believe they move
 

Sharky

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Watched these videos posted very interesting
There is a cool one where the curator crawls inside one of the boilers & super heaters. Also another where he ventures all the way down inside the keel where the rudder gear is located.

The places, nooks & crannies he crawls into on the NJ are incredible.
 
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