In this episode we're talking about how the doors dogs work. To send Ryan a message on Facebook: / ryanszimanski To support this channel and Battleship New Jersey, go to: www.battleshipnewjersey.org/v...
In the first part of the video, notice that the WTD with the individual dogs is marked "Z" and the QAWTD is marked "Circle-Z". When "Zebra" (Maximum watertight integrity) is set, the "Z" door would require permission from DC Central to open, while the "Circle-Z" door could be opened/closed to allow crew movement.
@@timbowden1680 Just looking at it, the QAWTD looks more expensive to manufacture and more troublesome to maintain as there is more to go wrong with it. So I would guess you can save a sizeable amount of cost by not making all WT doors quick-acting
@@rilmar2137 Sharp angled corners are stress risers. or stress concentrations. While rounding them makes things a little stronger in the basic sense, systems are generally designed to have normal working loads well away from yield stresses so that likely doesn't make a big practical difference. A possibly more important effect is that is vastly improves the metal fatigue properties of the system by reducing the peek stress. Keeping peek stress in steel structures below about 10% of yield stress basically eliminates fatigue.
How about the watertight fittings on the ventilation trunks? Also isolation of piping systems during general quarters. Talk about the firemain system, and how it can be subdivided and rerouted around damage. The giant screwdrivers for opening the hatches that don't have protruding dogs on the top. Also electrical stuffing tubes, how they work.
Also what is the mechanism used to keep the latches watertight, is it some type of o-ring or some other type of pressure seal? You obviously don't want the water spewing through, admittedly at a reduced rate, through the latching system
@@marcm. I never had to take one apart, but I expect it's a packing gland of some sort. You have a hollow tube, in this case through the bulkhead. The shaft that connects the two handles goes through that. then you wrap around that shaft what is essentially grease packed rope. there is a compression nut that squeezes the rope tight between the shaft and the tube. that creates a watertight seal. standard plumbing fixtures use this to seal valve handles.
@@marcm. There are several videos on watertight doors. This one is a good starting point. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RFOj9hLZiPI.html
i would be happy about doors being one of the most requested topics. Means that people are actually interested in more obscure things, trying to understand the subject, rather than going "YAAAAY BIG SHIP WITH GUNS THAT GO BOOOM"
The USS North Carolina had a great one on the soda shoppe onboard and they talked some on that, but yeah! would love to see one here, esp considering all the various years of operation
When I was working at a supermarket, in the butchery department, the fridge and freezer doors had a push plate on the inside to allow you to open them. This worked great, except when one of the butchers closed the freezer door, shoved his steel in the lock, and turned off the light. They let me out after a few seconds but it's not a space where you'd want to be stuck for very long.
On modern CVNs the SSES and CDC spaces have both an NTD that opens inside the space, with a combination lock or keypad lock, *and* a WTD that opens outside the space. This ensures the ship can keep fighting even if DC is happening outside the tactical spaces. Remember that seawater filling up the p-way doesn't necessarily mean the ship is sinking, it might be firefighting water. Does BB-62 have the same setup for SSES, CDC, etc.?
Have you really done over 1200 videos?! That’s impressive. Good for you, and BZ to Libby for putting up with you that many times. Don’t worry about the constipated pedant brigade who insist on navy terminology for everything. New Jersey is a museum ship, attracting visitors from non-naval backgrounds, too. They don’t need to be overwhelmed with jargon. Thanks for posting.
the only museum ship that is a warship near me is the submarine "Lembit" the only surviving Kalev class diesel sub built by Vickers and Armstrongs Ltd in the UK for the Estonian Navy. Luckly its stored in doors in the Estonian Naval museum. The museum building is neat in it self, its an old coast guard/border patrol float plane hangar and it basically two big concreate domes built in 1916-1917.
You have some rare jewell there. I think it's the only pre-war mine-laying submarine in existence today. Good thing the Museum moved it indoors. Cheers.
excellent video! i was wondering about this exact topic last week, so i re-watched your previous videos and figured it out, but you didn't explicitly explain this in the video, so it's really nice for you to do so here! cheers
Ryan, one of your best, was the "dogs" on the "dog doors." Is Ryan going to call the dogs, "dogs." And, you DID! I'm a machinist, and a woodworker. BOTH use dogs. All the time! And, you showed one instance why. steve
A "Joiner Door" is called that because it is made by a Joiner ie a Carpenter that specializes in "Joinery"; ... ie "joining pieces of wood, engineered lumber, or synthetic substitutes (such as laminate), to produce more complex items". In other words, it is a "regular" door with no added duties/abilities ie it won't stop water, or bombs, or fire, or indeed much more than a couple of sledgehammer swings. Your ship's Carpenter should be able to make, repair and install one, while underway or as a normal part of their duties. Normal functioning of the ship is not impaired by the loss of this piece. Ship/Crew safety is not altered by the loss of this piece. Zero port time needed.
Very familiar with both types of watertight doors , the seals were always an important job along with pressure testing before a ship could be ready for sea . It's surprising not to see escape ( doggy doors) on the non - WT variety . Certainly RN ships built in the 70s and 80 s had them on many compartments but I guess New Jersey being so heavily built didn't need them .
Something I noticed on USS Turner Joy is the mechanism for the dog is on one side of the door while the nut holding the dog together is on the opposite side. Thus, the mechanism can be taken apart from either side of the door. Beyond redundancy of controls, there's redundancy of maintenance/emergency access.
How about a video about the Casualty Power system. Basically, the ship has lots of cables and fittings to reroute power around damaged sections of the main electrical distribution system.
I don't know if you have pointed it out in some of your other "door" videos, but I noticed on this one the "test" port by the lower battle lantern that one uses to make sure they are not opening a door into a flooded or smoke filled space.
Ryan sir at 6 minutes into the video you're standing in front of a watertight door that does not have a handle on the lower center dog. I believe this dog was painted red on the other side. It may not be worth a full video but could you explain why that is.
I noticed that as well. Both doors have red paint on them. I figure that if you use the bar/dog that's painted red, it may be for an emergency. It would be used if that compartment was flooding/flooded, on fire, or was contaminated.
@@jonpinkston You're right about the red paint. The quick acting door does not have any red paint on the non-mechanism side unlike the watertight door next to it. Also the dogs on the quick acting watertight door All seem to be operated by the wheel. Now The dog next to the red painted area might only engage when the wheel is fully turned but there's nothing designating that on the other side which is fine because you still have the regular watertight door for egress as long as the frame is not buckled.
I'm curious about those freezer doors. You'd think that in one of the refits the latches would have been fitted with the "modern" versions with a plunger on the inside of the door that can release the latch. The best I can tell these were required in any new installation starting in 1971 and can be easily retrofitted on any standard industrial fridge/freezer door. Somewhat amazed they were never changed out but that they went through the trouble of having an alarm system for people stuck inside.
I noticed on the door with the dogs that there was a red marked dog. I also noticed that it didn't have a corresponding one on the other side. I presume it would only be used in cases where the door is to be completely sealed off and not to be opened from the other side. Under what circumstances might that be the case and the red dog used?
It's still scares the hell out of me! I remember hearing stories the night of Pearl Harbor Marines were on and guard duty by one of the hit ships and they could hear tapping/banging one of the Marines went to tell the NCO or the officer in charge, only to be told return to your post there's nothing we can do! Another story Pearl Harbor guys were at the bottom of the ship in the well, put the bomb started dropping the went “Z” closing the hatch because nobody saw the two gentlemen, they survive for 16 days in the dark food plenty of water… they suffocated..
Very, very cool! Do you already have a video detailing the different bridges of the ship? I remember when you found that adjustment/could-in-theory-be-used-for-very-bad-steering mechanism and mentioned things like after steering. Is there a video to familiarize myself with that? Or should I ask for it? I am asking for it, if it does not already exist.
I noticed on some older movies and tv series Navy doors were wooden and had 'kick here' stenciled on the bottom. As in escape part - my guess purposely designed to be weaker down low to kick out ? Mr Roberts movie had this in the movie.
Those doors only open out (you don't want the hinges to be on the inside with the prisoner) and have pull handles on the outside, it would make no sense to have a handle on the inside because from inside you have to push the door to open it, provided it isn't locked. Besides, they aren't watertight doors and aren't dogged down, they're kept closed with a key and lock and made of bars and/or mesh. Don't ask how I know this.
Just a note, if you're in a flooding space and that door needs to swing into where you are, if there's more than an inch or two of water over the door, you're not going to have the strength to pull it open. that's one way people get trapped behind watertight doors. the compartment might only flood half way, but that's a few thousand pounds of weight on the door
Horn or no horn, there's no way I am ever going into a freezer without my own mechanical, reliable, simple escape method. NO WAY! Cause stuff happens at the worst of times. It would be nice to know if the horn was installed after they figured out that they needed one or if someone put some thought into it from day one. hahaha, Good stuff Crew, Good day to all the other viewers as well. This is good stuff, fun and interesting. Mike.
When I worked in catering, each fridge or freezer had an empty ice cream tub inside the door. Open the door, drop the tub to,stop it closing, job done! They did have handles on the inside but most of them did not work....
@@nigelterry9299 Mmmm, ice cream, haha, Nigel, I have been in a freezer with a broken escape handle too, it's not fun, I'm not claustrophobic in any way at all, I just don't want to be found dead in a freezer, all of us deserve a much more honorable death, like behind a quad .50 on deck, haha, Fun stuff!
In the US, Osha required escape mechanisms on freezer doors (and bank vault doors) that did not require anyone to come and let you out. I think that this happened in the 70s or 80s. I recall watching workplace safety films in the 80s that emphasized ensuring that nobody was in a walk in fridge or freezer before locking it up.
I got trapped in a freezer at work when the mechanical systems all froze over. My work took freezer safety VERY seriously for a good solid couple of days after that.
I don't know if you've done an actual video yet on CEC vs CIC, but that would be interesting, comparing the combat engagement center vs combat information center. Also, on my ship, the USS Hornet, we have "radio central" on the O2 level (same level as our CIC), that handles all the communication, both "clear net" and classified. Do the Iowas have something similar? And do they have a vacuum tube system like the Essex's, a la the post office or bank?
As safety conscious the Navy is, I am surprised that a handle would not be provided on the inside of a freezer door, but instead rely upon an auxiliary electric circuit to sound a horn. I worked at a restaurant with a walk-in freezer that did have a push rod on the inside to open the door, but no button to sound an alarm for a trapped worker. That probably would not get past safety inspection now. That interior handle was balky and I dreaded going in the freezer and propped the door open when I had to go in. It was like -20 F, so you wouldn’t last long if trapped.
Reefer doors on the dairy fridge up forward on the USS Midway, a near-contemporary of New Jersey, could be opened from the inside. I used to take catnaps in there when mess cooking because I knew no one would come looking for me there. It may not have been standard dogs; might have been a release mechanism of some sort. 50 years ago and I do not remember that detail.
How are the dog actuators (wheel/ levers) sealed where they penetrate the door or frame? Is there a packing gland, lip seal, grease chamber, etc.,or is the slight leakage that would occur considered acceptable?
Maybe Vietnam and earlier freezer doors can only open from the outside, but post 1980s can open from both sides. The alarm is in case someone closes and Locks the door from the outside. (
On the regular WTDs where the latches go through the bulkhead how are those keep water tight? Is it the same concept as the propeller shaft where they use packing materials and bushings or is there some other method they use?
Thanks for another great video! I have a question for Ryan, or anyone else: what is it like moving around a ship like the NJ in what I will call "Battle Stations." I'm assuming that if a warship is in combat, the folks in charge don't want sailors opening up doors and hatches all willy-nilly. What kind of restrictions might there be on opening doors and moving from one part of the ship to another? Is there a central authority that can receive request to open doors (I'm thinking damage control parties) and approve or deny them? How are decisions about where to "permanently" close doors made in cases of flooding or fires or other damage? Thanks for anyone who can shed light on this, and cheers!
Awful question about the doors: If you were to be ordered to closes a WTD because of flooding while there were still men inside the filling compartment, what keeps them from opening the door and flooding more compartments?
Can you tell me if it was the NJ that visited Portsmouth in UK back in the late 70s or 80s. I remember going to see it and watched it leave Portsmouth harbour. At the time it was the largest warship to have docked in Portsmouth. Regards Ian
Just in, but you got me with the 'knee-knocker'. Always wonder where I got the bruises from. 🫤 FYI- Quick acting doors ( with single lever or wheel to activate the dogs) are mandatory for regular passageways nowadays.
In the fleet talks video. You mentioned an area where you could see all four shafts. While we can't tour that room in person due to the laws about needing more than one entrance/exit to a room. Could you do a video showing and talking about it? And if you have already, link please. I love learning about the iowa sisters
On USS Midway CV-41, 73-76, every watertight door had a dogging wrench on each side. A cheater bar, short (12-18"?) pipe to get leverage on the dogs. Two "L" brackets held it, short one on the bottom, longer one on top. Slip top end over the top one, lift high enough to clear the bottom one. drop so it kinda rattles around. I know because several of us came back from climbing Mt Fuji with beautiful 5 foot climbing sticks, branded nicely at each climbing station, wonderful souvenirs, and the damned Masters at Arms confiscated them as lethal weapons. I pointed out that 5 foot long sticks in crowded narrow passageways are terrible weapons, and every single one of the 1000s of watertight doors on the ship had two fantastic lethal weapons. Of course that made no difference to their attitude. Those dogging wrenches -- you pick one up, perfect length and weight and hand fit, first instinct was wanting to smack something with them, they were practically made to smack things. Thousands of them, almost everywhere except the middle of the hangar deck was within 20 feet of a few. ETA that I didn't see them or even the two L brackets in the video, possibly because people would steal them as souvenirs.
Ryan, I noticed that the two doors you were standing by one swings in and the other one swings out? I'm sure there is a reason for it but I don't know.
That should be because of traffic flow if you wanted to go forward, you stayed on one side, and on the other if you were going toward the back of the ship. He spoke about this once.
Now the next big question is: Why did they use two different water tight doors side by side? I always thought the people on the other side of the door were screwed. Guess not. They can open the door and have the water rush in? Maybe the water would hold it shut so they're still screwed. I can't wait until the next door video!
Do the watertight doors function equally with water on either side of the door? And also, can you tell if the other side of a door is flooded/on fire or whatever before opening it?
A few thoughts off the top of my head . . . First of all, the WT doors would be closed to isolate the flooding. Shift ballast & fuel & such to correct the ship's trim. Begin pumping out the flooding. Rig collision mats to cover the holes & mitigate additional flooding. Assess damages to any machinery & equipment. Somewhere along the line, keep on fighting, defeat the enemy or disengage from the battle to minimize additional damage. Get help from escorts & other ships in the task force. Care for casualties. 'Limp' to the nearest base for emergency repairs, then back to state side shipyard for permanent repairs.
I noticed one of the dogs on the WTD is red, along with the area surrounding it, while the rest are black (dark gray?). Is that one dog special in some way? There's also a red area on the QAWTD.
I'd like to know how and if battleships have plans for enemy infantry on board the ship. How do you do small arms combat on board of a battleship? Is it something that the crew trains for?
Seems to me that when NJ was in the Pacific fighting, no other ships were around them to board her. I can't imagine that happening in any kind of circumstance.
Yes indeed, "repelling boarders." It's less about small arms, though, and more about using the incredible defender's advantage that the crew would have. A warship is a maze of little compartments, there are fire hoses everywhere, the crew controls the lights and communications, etc. etc.
Watertight is not the best description. Maybe at the surface but not able to hold against a pressure. However, holding against a flood able to sink the boat , works. Thankyou.
doors to the brig can only be opened from one side, one would hope. standard business codes / regs in most of the world say a walk in frig/freezer MUST have a way to open the door from the inside even if the door is locked when attempting to enter from the outside. the US Mill, I guess, can ignore those codes/regs. how about doors/holes in the outside skin of the ship that penetrate the haul below the water line. you would not want a frog-man to be able to open it. how about all above water line doors/hatches IF an enemy is on the ship trying to get inside can external doors be 'locked' to keep the enemy out? keep up the great vids.
I would think that few people are stupid enough to try to board a battleship in the smoke (people do try and board merchant ships - I believe the term for the type of folks who most often try it is "pirates"). A battleship, however, is bristling with guns and has a crew of thousands. Some of the guns are, of course, way too big to shoot at pirates trying to board (unless you see them miles out, then ruining their day with 16" HE shells is a real option), but 49+ 20mm Oerlikon guns plus the contents of a substantial small arms locker should make even the most determined buccaneer think twice... I wonder when the regs about freezer doors having to open from the inside came in? The one place I've ever worked that had a walk-in freezer (I was there in the late 1980s, but the facility was built in the late 1960s) had an inside release that tended to freeze shut. There was an instruction sheet inside that started with "If you are reading this, you are locked in the freezer - here's how to get out"
Only openings in the outside skin of the ship that penetrate the hull below the waterline would be the sea chests and there is no way a person could get into the ship through one.
While not a water tight door, the one from the Captain's shower only had a knob inside the shower - at least at the time of the video that showed that door.
