Shut the Door! Doors and Hatches on the Battleship
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- čas přidán 14. 06. 2024
- In this episode we're taking a deep dive into a a really specific component of ships, the doors and hatches.
To see us move an armored hatch:
• Down the Hatch!
To support this channel and the museum, go to:
www.battleshipnewjersey.org/v...
NTD is Non-Tight Door. Tight means impermeable. There’s watertight but there are also oiltight and airtight.
👍🏻
Correct.
Well said. Doors labeled NTD aren't tight against anything except possibly people.
@@ut000bs But they can act as fire boundaries. only WTDs or QAWTDs can act as a smoke, fire, and flooding boundary.
@@ut000bs yeah aka its just a regular door
When fate closes a door...OPEN IT AGAIN.
That's how doors are supposed to work.
My battle station on the U.S.S. Ranger had a hatch in it. During drills the space was closed off and A/C secured. I had to do this with an uncharged breather on. The sweat would fog up the face mask and my glasses. Finally I was just doing it by feel only.
At the end of my son's deployment on a guided missile cruiser, the captain remarked that this was the first cruise he'd been on that a sailor had not lost a finger, concerning the shop's doors.
Funny you should mention... I almost lost an arm to one. Good times.
We had a guy on my ship the USS Newport News (CA-148) got a purple heart for the same thing.
@@AdamosDad I seem to remember someone being knocked overboard by an unsecured door in the 1980s.
@@WayneHarris The USS Newport News (CA-148) was stricken on 31 July 1978, we did lose 21 men to the detonation in T2 "Fair Winds and Following Seas" Brothers on your eternal patrol.
@@AdamosDad Just to be sure I just looked it up. You can only get a Purple Heart for injuries sustained during action against the enemy. Training injuries etc don't count.
It would have been great if the video opened up with Ryan opening that door, stepping through it, and giving his normal introduction.
I asked him to! He said that was cheesy. Thus the edited in opening but no Ryan.
@@BattleshipNewJersey Hah! I felt like something was cut off there. Wonderful video nonetheless.
@@BattleshipNewJersey when he goes up on deck or in echo chambers ask him to have a mike on his collar, sometimes it is very difficult to hear. You do a great job filming and editing by the way.
Hes got a mic on his collar through the entire video if you look closely.
@@BattleshipNewJersey If he walked through a bunch of doors that opened right before he got there to the theme music of "Get Smart", that would be cheesy.
Wartime expediency:
Whilst touring USS Alabama I noted to my cohort how the brackets holding up shelves were off angle and had sloppy welds. "As long as it works" technology brought to you by people that did remember Pearl Harbor.
Shelf brackets were also given to sailors learning to weld, given that they usually weren't mission critical.
In the battle of Jutland 1916, a few British ships blew up because they didn't close the hatches to speed up the reloading time for the big guns.
Yeah in order to speed up reloading they did two things. The first was leaving the anti flash doors which stop potential turret explosions from entering the magazines and starting ammunition fires. The second was the stacking of cordite bags (the propellant) in the turret which sped up reloading as you didn’t have to wait for the cordite bags to be shuttled up and then put into the guns but instead you could just have them there ready. The stacking sped up reloading but as you can probably tell, made the possibility of a fire extremely high if the turret was hit which in four cases it was and in three of the four cases it resulted in the destruction of the entire ship.
The Jutland website is able to explain this in more detail: www.jutland1916.com/tactics-and-technologies-4/battleship-design-and-anti-flash/
@@mr_derpo9729 Thanks, I was looking for something like that after watching: Shipwreck Secrets - "Battle of Jutland". Royal Navy Vice Admiral David Beatty lamented “something is wrong with our bloody ships today.”
@@scottw550 Beatty should probably have considered why those anti flash doors were left open. His desire for maximising the rate of fire of his battle cruiser's guns may have had some bearing on the matter.
@@gwtpictgwtpict4214 Yet, after the battle, everybody was mad at Admiral Sir John Jellicoe for not persuing the German navy into the night even though the Germans had superior searchlights. Beatty got promoted, and Jellicoe retired.
@@scottw550 Beatty had major political connections, Jellicoe not so much. Also the Royal Navy was having to explain why Jutland wasn't Trafalger Mark II, like every one was expecting. Jellicoe was in charge, so Jellicoe took the hit.
We had a huge Ballistic door leading into the steering gear units on the USS Nimitz. It was designed to be able to be welded shut from the inside in the event of the bridge being taken over by boarders. And we could assume control to steer the ship.
If boarders took over the shio they'll have explosives to blow any doors they have to to take control of it let alone sink it. An aircraft carrier would probably take battalions of troops trained in close quarter battle tactics to seize a ship, and it's damn near impossible to do when the ship is underway and surrounded by escorts.
As someone who will probably never make the trip to tour an Iowa class ship, i greatly enjoy and appreciate your videos.
"NTD" simply means "Non Tight Door" not intended for use as anything more than an office or stateroom/cabin door. There is no "W" missing. As you pointed out they aren't intended for fire or flooding boundaries.
Even though both of my 'girlfriends' were constructed in the 1970s I've used all of the various types of door, hatch and scuttle you showed here. For those who have never used one, a scuttle is both inconvenient and a pain. They are not designed for big guys or people with movement issues.
The dogging mechanism of a QAWTD, properly adjusted exerts massive force to ensure that the seal is complete. I saw a shipmate try to close and dog down one even though a high amperage welding cable was strung through it. The cable was energized. As he dogged the door down the knife edge CUT through cable and the resulting arc sounded like a gunshot and was hot enough to ruin the rubber gasket. My shipmate had to help the Repair division replace the gasket, not a hard job but he had to do it after hours as part of his 'Extra Duty.'
I don't know why they do it this way, but the Marines call ANY door in a bulkhead a "hatch." In 20 years in the Navy I've never been able to convince one he was wrong. 😎
Another nice presentation.
J Davit was a good lad, always helping load things onto the ship.
In his book _Battleship Sailor_ Theodore Mason explains that the armored hatch to main radio could not be opened from inside the compartment. If they had to get out, they had to hope someone on the outside opened the hatch for them.
That is why I joined the Air Force.
@@timmayer8723 ball turret and tail gunners back in WWII weren’t very well protected
@@blacksquirrel4008 Gotta have pretty big balls to stay outside for hours being a pretty considerable target and praying the manufacturers properly welded the turret to the plane. *Ba dum tssssss*
@@klutzspecter3470 Well, usually they only got in when approaching the target.
@@blacksquirrel4008 Ball turret gunners were some of the safest people on the aircraft. IIRC, tail gunners and navigators were most likely to die by far.
From a mechanic point of view:It's easier to install a rounded seal into the watertight doors rather than a square one. Those seals tend to be a bit unwieldy and don't want to go around edges or corners.
Came down the comments to say this - ovangular doors are easy to fit gaskets to, square cornered ones are a bastard and will leak at the corners in extremis.
Getting a square corner to seal on anything is just about impossible. Curves are much easier as it avoids a high stress corner that is easily bent and deflected.
Used all of them god I hated being on ship but I mean the doors really haven't changed much in 100years it looks like lol
so someone with a minecraft profile pic, served on a battleship 100 years ago. right.
These sorts of doors are still used today, I think what they're saying is that the ship they served on, which could be right now, looks a lot like NJ which is nearly 100 years old
@@BattleshipNewJersey You are correct I was on the USS Tortuga. USS Denver, USS Germantown, and USS Bonhomme Richard as an embarked Marine, 31st MEU out of Okinawa and I swear these styles of doors have never changed. Marines hate being on a ship! Yes, I like playing Minecraft a lot to lol.
That was what I noticed too. Same door on a 1940 ship as a 1980 ship. Ha, we always messed with the jar heads
They had those Dutch doors on ship I was on too, personnel office and bursar, or whatever the paymaster is called. Couple of Marines with sidearms in case someone gets the stupid idea of robbing the payroll on payday
Not that surprising really.
It's the most efficient design for what it is. You see that basic design all over the place, food containers for example.
Easy maintenence, eventhough replacing the rubbers is a proverbial pain, adequate seal, and doesn't need power to maintain that seal. It can also stand the pressure of a flooded compartment, to a certain extent.
Expect to see them for a very long time.
Those scuttles are supposed to have safety latches to lock the scuttle door in the up position. About lost three fingers when the latch failed and I fell down the ladder still holding the scuttle hatch. They call it "knife edge" for a reason.
As a Vietnam era Dutch Navy veteran i really loved your tours on the battleships....as you know we dont have battleships and we had only one aircraft carrier...so, seeing in detail the workings of those mighty seawarriors, and the crew that lived on them, makes my heart tick a bit louder again....once i was fortunate to dock at Norfolk in 1974 almost at the end of my Navy duty and the visits i made on thjose ships stil are one of the highlights of my sea going days...i was treated with great respect like one of the crew and i hold great memories of those days at Norfolk....watching your tour brought that all back again...thank you very much....God bless America and those who protect and defend its borders
In 1970 I was a Lance Corporal. Our battalion went abroad ship for deployment, USS Terrebonne Parish, LST. The hatches always clanged a little all night from the rocking of the ship so we wired them open with coat hanger wire. A week out and the Navy had general quarters practice where the are timed on getting the spaces water tight. The alarm sounded we went into our living spaces and the sailors came running thru closing hatches. Imagine there surprise to find our wired hatches. We really had no idea we would cause such a headache for then.
About the same thing happened when I deployed aboard the USS Ogden, LPD before and during the first Gulf War. The D.C. Chief was not happy with us😂😂
Just a small insert - “Dog Zebra” is a red “Z” with a black “D” are WTD that are secured during times of darken ship as well as Material Condition “Zebra”. Thank you. I’ve been retired since 1995 so I hope I still have that correct.
I have used everyone of the doors mentioned after 10 years in the Navy during Vietnam.
I was passing through a space on the 01 level where an officer was chewing out a 1st class because the gasket on a QAWTD was bad. The 1st class replied, "Sir, if water ever gets this high, the last thing I am worried about is the water tight integrity of that door". I almost got out of earshot before I burst out in laughter. Almost.
Except that it is not just about the watertight integrity, it is also about the airtight integrity in case of a fire. That is why air pressure tests are done between spaces to ensure the integrity of those seals.
@@johns1039 And Chem/Bio.
Thanks for the effort you put in. Always informative.
Those joiner doors are REALLY heavy I remember we had to install one on the island of the USS Yorktown (CV-10) from 3rd deck to fill in for a rerouted tour. Had me sweating haha
love all your vids. the curved corners on the water tight doors is mainly for the rubber gaskets to flow around the door and not have to make 90 degree turns. yes being able to hold the weight of the above is also a factor.. but getting a perfect seal with the rubber gasket is the main reason for the curved corners.
You are right about gaskets and rounded corners. As a watchmaker, I can say that round watch cases usually have far less problems with water-resistanse, then sqare, rectangular and other non-standard shape cases.
There is another reason why there's no sharp corners in openings in the decks or bulkheads. That is to prevent stresses from converging there and cracks starting.
Fun trivia, the blue or black paint that runs across the wall or bulkhead near the deck is how you determine if space is flooded or not. Also if there is an X Y or Z on the hatch, it's a water and even air-tight (door) hatch.
So if the water's above the paint line, the space is considered to be flooded?
Our berthing area was on the 3rd level, and we had two hatches leading into the space. Normally the hatch covers were open, and they were held open with a long pole and a thick cotter pin. During General Quarters or other conditions, the hatches were closed and dogged, and you had to enter/exit through the scuttles. That was never easy to do when you had on full gear. Getting out was easier, trying to step down through the scuttle onto a stairwell was challenging.
I've used (and fixed/maintained) very similar doors to the quick acting water tight ones on pressurized aircraft, very neat engineering that goes into them and cool to see some of its roots
I used Battleship doors for my Collage Design project of building a futuristic house , just luv those fast door closing systems beats the crap out of Yale locks .
13:17, the difference between the armored deck and the unarmed deck on the Massachusetts is like night and day, its a giant step and youre practically walking on sheet metal in the unarmored space.
Thank you Ryan! A big fan of this channel. I hope I can visit Battleship New Jersey someday.
You Tube is a greater part of our jobs... The videos are steadily getting better, confidence, sound, content, conveying knowledge/ experience etc. Vids are always interesting, and have reflections of what it may be like to live there...well done.
Ryan, great video subject. At the first of this video, just to the right of door 210, there is a thermostat on the bulkhead. We use to put something over that post that sticks out from them because it was very dangerous if a person would accidently be shoved into it. It might prevent an accident to a guest. or you all, to place something protective over it. Just a thought. Thanks
Excellent video and very informative. Thank you for sharing your knowledge with us!
Sometimes the reason for the Curtain rod is that without Air Conditioning, you would get better air flow with the door open. As you said the curtain would give you some privacy.
You could always tell when a space was occupied by a bunch of E4 and below skating by the number of doged down latches on the hatch.
I can imagine that curtains may have also been used to let the air move better while still providing some privacy and light blocking.
Wow, never thought I would watch a video about doors. Great videos keep up the great works. Can't wait for the video about windows.
The main purpose of curtains vs. joiner doors was to prevent the possibility of becoming trapped in a compartment due to a door becoming jammed battle damage.
I did not know about the J davits. I had seen them in photos and had seen the pipes, but I had never made the connection. Good video.
More like this !!! Great content !
The doors on the Mobile Subscriber Equipment (MSE) I worked on the MI Army Guard had doors that latched tight to be gas proof and Electro Magnetic Pulse proof. The same for the 407L Tactical Air Control & Command System (TACCS) in the Air Force in then West Germany. Both had one handle that worked three dogs to pull the door tight. Not exactly the same as a WTD on the USS New Jersey.
NWDT I think stands for Non Water Tight Door.
"Quick-acting" doors and hatches tended to be the ones classified Z (Zebra), which were kept open at sea (usually on main passageways) but needed to be closed quickly for General Quarters/Condition 1 or damage control, and maybe opened momentarily for repair party access. You wouldn't want these doors to be open long, or left open because they were a pain to dog shut. Doors marked X would be closed all the time; if you passed through you had to close it behind you. Doors marked Y would be open in port but closed at sea and checked every evening. Doors marked Z would be closed under Condition 1/General Quarters to maximize the watertight subdivision of the ship in combat conditions.
Crawled through many a scuttle hatch while checking the nether regions of the ship while on post watch. Too many. That was a long time ago, but I’m sure there are a bunch of squids crawling through scuttles on some ship in the middle of nowhere, as I’m typing this from my comfortable bed. Remember their sacrifice.
On many of your videos you can see evidence of knot work such as whipping on handrails or handles. A video on this detail would be fascinating.
We had many of the 1 long handle that you pull down and up for quick action. 81 to 85 USS Forrestal and USS Inchon. Both gone now.
From one to another thank you for your service to our country. Us army 88 to 93
Great stuff thanks
The only doors I've used were the kinds on a Balao-class fleet boat, and that was at a museum - I believe we demonstrated one of the doors when I spent a night on there, probably to prevent curious scouts from hurting themselves trying it without supervision
I used to stay during vacation in a summer house near a former soviet naval base, and this summer house had a soviet style water tight doors with metal frames but with dogs removed.It had a normal type handle with lacthbolt.
this guy is a door expert now, respect
and we come to the material conditions of readiness, one of my favorite lessons to teach at fire school at FTC mayport fl.
Reminds me of of a nuclear powerplant I used to work at. Emergency Electrical Switchgear had a Cardox (carbon dioxide) fire suppression system. It also had a center hatch wheel, to drive the dogs. LOL there was a tool adjacent to help with turning the wheel to dog the hatch, but at least two people I know of jammed the barrels of their rifles into the spokes of the hatch wheel and tried to use them for leverage. End result, seriously jacked up rifles.
Oh, door 348, -4'6" elevation, how I really don't miss you so. Control room doors were the same. You had to be careful opening them, as there was a negative pressure airlock and the control room itself was positive overpressure, so if you had the outer door open, and opened the inner door, it would come at you really frigging fast. And it was almost a 1k lb door.
The slow acting door supposed to dog them in a criss cross pattern like doing a tire so you don't warp the door
I was cringing while watching him dog incorrectly. My old DCPO training was shaking it's head. LOL.
At 6:50, why was one of the dogs painted red? Does it have a significance?
Its an emergency feature put there by the museum.
And if the door is properly adjusted each dog should be halfway. The handles on the sides should be horizontal & the corners should be at 45. That should give an even seal all the, way around.
I was stationed on the CGC Polar Sea and was a DCMA (Glorified Non-rate that worked with the DC's) and I had to do all the Maintenance for the QAWTD's in the Deck department. I Remember having to do chalk tests on the doors when we changed the gaskets.
Hey Ryan, I really appreciate your CZcams channel. I’ve been nerding out on all your videos for awhile.
I saw on one of your videos you always need volunteers for welding work.
Does the ship still have welding machines on hand?
I’m in Arizona and would love to volunteer some time to knock out some welding repairs that you need done.
Also in a short time once I’m done with school I will be able to do under water hull cleaning , inspections and repairs.
Anyways just wanted to say thank you for your videos and what you do
We have some welding equipment on board. Definitely give us a call and we can chat about what we have what we need. I, our poor comment answerer don't know nothin about weldin to be able to tell you exactly whats what. - Libby the editor
I used every type you mentioned in my 20+ years of service in the Navy.
On the submarine,We had the lever that you would pull down or like you showed, each latch
On topside WTDs, there were 'quick-acting' dogged doors too but the dogs & latching mechanism were around the door frame with a single long handle that was pulled down to pull the dogs against the door once it was shut. Don't know if the battleships had those but frigates & destroyers built 1960's and after had them.
During a storm off the coast of Portugal aboard USS Carter Hall LSD-50 (26th MEU) I got my thumb crushed in a quick-action hatch that we had propped open and failed to stay that way. It was such a nasty injury that I nearly lost the appendage and still do not have full use of it. I had to be flown to Spain with the Ships Doctor for an emergency surgery with a specialist
awesome!
8:49 this is very true. Heard from my great-father(RIP), who served on an escort carrier during WWII, they hit a nasty storm one time and a guy had his arm broken when one those slammed closed.
It's fascinating seeing someone theorize the origin of a door.
Very interesting
Modern merchant we have quick acting on the incinerator rm. That one has a long lever arm instead of a wheel and only a single motion is needed to open/close. Gaskets are a mix of hard rubber on cool areas and fire resistant bulkheads have a woven gasket.
More modern navy ships than this BB have similar single-lever doors.
I remember placing wedges on watertight door buy TIG welding new ones on
NTD = non-tight door
ATD = air-tight door (typically in the superstructure)
WTD = water tight door
Opening a dogged down door can be a knuckle buster and I still have scars from tripping on the knife edges while drunk.
I lost a fingernail to a knife edge when a box of milk got dropped on me during stores onload.
@@wrench31e22 I almost got sea sick when transferring hydraulic fluid in a forward hold, the smell was horrible and the ship was doing elevators. I can just see that box of milk falling, ouch! Funny the things we remember.
During Security Alerts, we guys on the Guard Force would run through, armed, to our stations, and learned to jump the bottom of the open doors while ducking under the top. A misstep could be painful!
@@lancerevell5979 Indeed, thank you for you service brother.
during my time in, I had one of the water-tight doors slam on my hand and break several bones. just glad it was my hand on the knife edge and not my fingers.
Banged my head on the inside of the door once, WOW! what pain.. ow!
The duty section was always required to set Yoke and make reports to the OOD on all 5 of my ships. BTDT.
There was a tunnel to all the fun stuff in the back of the USS Miami.
The iconography on the Weapons Department door is not just artwork. This one tells you all the ratings that would have been there. The top left was a Fire Control Technician. Top Right were the Boatswain's Mates. 2nd down on the left was the Gunner's Mates. Then, on the right, was the Yeoman. Actually, every division or department office would have had one, or more, yeomen assigned. They were the guys who did a lot of the paperwork; typing reports, daily muster lists, assignments of men to their divisions, etc. The adding on of the CWIS is rather obvious as it was a weapon. The dutch door was so that men who had business there would not need to enter the office. Office space, with all assigned personnel, could be a bit cramped. I hope you can get that office restored to "working" condition.
The Joiner door to the Mess Line would have been there simply to keep people out for whatever reason. Of note: most ships I've been on the Mess Line is also part of the main passage way that also goes through the Mess Deck. During cleaning they would secure any doors or hatches (WTD's) and you would just have to find another way around.
~11:30 is is very difficult to get a 90 deg (square corner) to seal ... especially make it air-tight/water-tight against lots of pressure ... hence round and oval shaped hatches which seal and square doorways which (mostly) do not
I think, Ryan, that a good project for some of your volunteers if you have any with a lot of artistic ability would be to make a mural-size painting maybe 12 x 40 or something like that of the battleship New Jersey ,but, a cutaway split right down the keel.I don't think I've ever seen a decent cutaway picture of the battleship New Jersey.
HNoMS Helge Ingstad, which collided with a tanker last year, sunk because the crew left several dozen bulkhead doors open during their evacuation of the vessel. It was only recently discovered that the ship simply could not sink due to the collision damage, but leaving watertight doors open as the abandon ship command was given ensured it would.
super neat
Three conditions of USN shipboard material readiness are, X-ray, Yoke and Zebra. Designated X-Ray doors and hatches are secured all the time (or logged open at DC Central, if specifically required), Yoke doors and hatches are additionally secured prior to getting underway, and Zebra (the remaining) doors and hatches are secured when setting General Quarters fully securing the ship for battle. It's worth mentioning that the material conditions of readiness still refer to the old WWII and prior phonetic alphabet even to this day, rather than contemporary NATO Phonetic alphabet, which would otherwise be X-Ray, Yankee and Zebra. During workup drills preparing for deployment the most basic (and often most problematic) drill includes setting Yoke throughout the ship following lengthy in-port shipyard availabilities, leading to the well-known mantra, "Yoke is no Joke!"
Zulu
@@georgemalkin6546 Oh. Ok. I see what I did.
As I remember they would set material condition yoke at lights out, this would make it easier if you had to go to general quarters during the night
“So here is is another interesting variant”
*Screams in 2021*
I guess it was 1100 or 1500 hours, I think I heard the bell there.
NTD means "Non-Tight Door". The word "watertight" is not missing, just not used.
good stream
if you're really interested in figuring out if those hatches were repurposed, you might consider talking to some folks at the nearest university that does nuclear engineering. You could provide some filings and they could determine if the steel was manufactured prior to 1945 or not based on the radioisotope content of the metal....
Are the 3rd deck doors and bulkheads inside the citadel any thicker? I've wondered if they are intended to stop an explosion that makes it through the armor from spreading to other compartments.
Curved edges will make applying the gasket seal easier. If you’ve ever tried to put a seal around a square door, you’ll see why these ones are round
I can't speak for sailors, so they might use different terminology, but mechanics would call that 'dog wrench' a 'cheater pipe' or 'cheater bar'. A 'breaker bar' is an unratcheted socket wrench drive, so named because it breaks tough things loose and/or the socket attached to it.
Correct term is 'Dogging wrench".
Hello. I was wondering what those rotating beacons are for that were behind you on the deck at around 15 minutes into the video about doors?
I still have a welt on the top of my head from smacking it on the bottom of the knife edge while running to the soda machine during the nightly movie.
The first Naval vessel I swam down into was German. Slightly radioactive and all doors were
found too coral encrusted for entry. Previous visitors had breached entry where steel had
buckled under stress of WMD testing. I was certified by the US Army Corps of Engineers.
Nice video. 👍 Though the wind definitely wasn’t nice to the mic outdoors. I’d be interested in a video of the Incinerator room and its components. Also views maybe inside the incinerator and procedures a sailor would follow to operate and clean/empty the incinerator.
Check this out czcams.com/video/z-L6HqrfvRs/video.html
@@BattleshipNewJersey How about that, there is a video! 👍
We've got about 500 videos, we have a video for almost everything!
I would like that Armored Quick Acting Galley Door on the entrance to my "Man Cave". Add a small lock on the inside and we could smoke cigars or play loud music forever and the wife/kids could never get in to bug me!
0:27 NTD- NON TIGHT DOOR
WTD- WATER TIGHT DOOR
QAWTD- QUICK ACTING WT DOOR
And there is another type of WTD called INDIVIDUAL DOG WT DOOR (IDWTD). (Info from Pier Side Supply)
In movies they will sometimes have announcements over the 1MC like "Set condition Zulu throughout the ship!" Is that a reference to which doors are to be shut?
Here's a whole video about that: czcams.com/video/o8g0D8l2lrY/video.html
I think he's talking about water tight bulkheads.
I've always wondered if on warships the doors get locked during combat or if the men down there can open them to escape
Almost all of the doors can be opened from either side. The only ones that get locked are there to keep things secret or keep stuff from being stolen.
There are stories of chains being attached to the handwheel on one side of the door during catastrophic flooding. Once the water reaches the level of the door, the water pressure makes it impossible to close the door.
One of the risks of longitudinal bulkheads in the machinery spaces is it creates the risk of capsizing. To avoid this, counter-flooding is needed. Battleships of the Colorado class and earlier commonly had central engine rooms surrounded by boilers down each side of the ship, each boiler in its own watertight compartment. The USS Utah in Pearl Harbor is an example of an earlier ship that had many longitudinal bulkheads and capsized. Both the USS California and the USS West Virginia counter-flooded boiler rooms to make them sink straight instead of rolling over. The West Virginia is the one most famous with about 70 who were trapped in spaces unable to escape. I don't know if this was from direct damage or
US warships went away from longitudinal bulkheads to avoid capsizing from the North Carolina onwards. The North Carolina, South Dakota and Iowa classes have boiler rooms and engine rooms that are on the centerline and much wider than earlier ships. The later aircraft carriers went to combined machinery rooms with both boilers and turbines in one, wide room. They do have empty torpedo defense spaces that are only on one side, but the boiler and engine rooms do not have mid-line bulkheads. The torpedo voids can be flooded to balance the ship again. Any boiler room is either empty or filled in a balanced manner, making the ship very much less likely to roll over.
@@matthewbeasley7765 I believe that the use of longitudinal bulkheads contributed to the Andrea Doria capsizing after the collision with another boat and resulted in the use of transverse bulkheads being used in all future ships so that flooding would be much less likely to result in the ship rolling over.
Could you 3-D print an Iowa?
It may take a while...
Depends on the scale
Scale model?
without an issue, I've seen people have with blueprints for them online.
Full-sized one?
Not a chance, 3D printing with metal on the grade of Battleship armour is nowhere close to being viable yet.
Yes you could it you have the spec's to put in to the computer running it.
yes, I have a small Iowa class model I've printed on my shelf of Battleships Ive visited
Dog Zebra-:the marking a Z inside a D, the Darken-Ship command is at sunset, all doors leading to the exterior must be closed and light traps/curtains put up, no inside light should be seen outside.
Circle X-ray: special marking an X inside a circle found on definite purpose valves and fittings , always closed unless an authorized operators or phone talker permission and must immediately secured after use. I believe DC Central door was Circle-X...
I was just wondering how heavy are the exterior WTD bases on the new ships?
When I was in MSC I slept in the hatch hall.
So...watertight doors are like Sailors...Slow acting or fast acting. Got it!
Since all the dogged doors have a rubber gasket on them, would it be standard procedure during fire fighting to spray water on the door itself before attempting to combat the fire directly to prevent the rubber from melting away from the heat of the fire?
Mumbo Jumbo- “ah yes I have experienced all of these doors in 60 seconds”
@5:13 -- are you sure that's a "phalanx gun"? It looks to me more like a Star Wars Turbolaser turret, made famous in the "trench run" at the end of the first Star Wars movie ever released, which was in 1977.
Hey Ryan I have a question does the New Jersey still have it’s phalanx Guns or were they removed and put on other ships when the ship went out of service I’d like to see a video about that Thanks enjoy your videos
The CIWs were removed for decommissioning but, we are fortunate to have them back, though in a non functioning state.