The Drydock - Episode 252

[@kkupsky6321]

Best intro jam on all yt….

[@greg5095]

It really irks me that the hammering isn't on beat but

[@kkupsky6321]

@@greg5095 hahaha it used to get me but I like the dotted sixteenth notes.

[@OtakuLoki]

My experience with screw overspeeding aboard the USS Virginia CGN38 was during the 1993 Atlantic Storm. We were underway for that, and trying to make Halifax, before the Admiral in charge of the task group decided that wasn't reasonable. As the largest vessel in the NATO unit it was axiomatic that we were less pounded by the storm than were the other ships nominally in company with us. The waves and rolls were such that one or the other shaft was coming out of the water, and you could feel it through the whole ship. There'd suddenly be a notable attempt at motion towards the side of the ship with the screw coming up out of the water; if you were in the rear half of the ship you could hear when the shaft strut bearings lost lubrication as they came out of the water because the rubber would SCREAM as the shaft spun without the seawater lubrication. Because the blades of the screw were coming out of the water, that's where the overspeed comes in, and we were usually only dealing with a fraction of an arc of rotation, as the next blade in the screw slammed into the water, which would shake the whole ship again. And this could be repeating two or three times per shaft revolution. We'd still be averaging 20-40 shaft RPM, but the difference in instantaneous speed was incredible. This was with modern turbine engines, and heavy duty reduction gearing, run through an equally robust & tested thrust bearing. We weren't too worried for the turbines in the enginerooms, but the shaft seals were another issue. That kind of torque and abuse through that collar had the potential to damage the seating surfaces on the shaft seal, which would have allowed lots of water to come in along the shaft. Most of the time, the back-up shaft seal on a modern ship is going to be an inflatable boot. That can only seal when the shaft is still. On a twin screw vessel, like Virginia, this would have been possible, but there was one ship in company with us that lost their shaft seal during this storm, and had the lovely choice of trying to deal with the massive flooding past their failed shaft seal, or going dead in the water. That's what the experience of overspeeding a screw aboard a modern, turbine engine ship was like. I can only imagine just how many more things could go horribly, and permanently, wrong with an early vertical expansion steam engine. Eek.

[@georgewallis7802]

no personal experience of it here, just thought i'd point out that at least a couple of great lakes freighters may have been lost in the 1913 storm because of this issue, either directly through flooding or capsized due to broaching

[@JohnDoe-vm5rb]

This seems a pinnable post

[@ImpmanPDX]

We had to totally redo the packing box in our boat once after a particularly rough transit (we were on a Fellows & Stewart 56'). I slept in the gangway berth nearest the engine compartment and I can still hear the sound of the Cummins diesel running up to it's rev limiter only to be slammed down back in to the water. The whole shaft would jump kinda up and forward the ship, and it seriously looked like it was going to tear free a couple of times there.

[@pauldietz1325]

One of the things Admiral Lee did was assist in the early adoption of the VT fuse in the Pacific. When Lt. James van Allen (Dr. van Allen, later discover of the van Allen radiation belts) was out there in the Pacific trying to "sell" the fuses, he got Lee (who headed an informal group of fleet gunnery officers known as the "Acme Gun Club") on his side by pulling out a fuse, sawing it open and showing and explaining to Lee all its innards, including how you design vacuum tubes to withstand 20,000g of acceleration. As a gunnery geek, Lee understood the potential immediately, and ordered the fuses sent to all ships in his task force.

[@gondolacrescent5]

What is a “VT fuse”?

[@hmsverdun]

@@gondolacrescent5 Variable timing or proximity fuse/fuze depending on which country you are from as we would call it today. Instead of detonating at a height or time after shooting it goes when the internal radar has a strong enough return/change of frequency.

[@Edax_Royeaux]

@@gondolacrescent5 A proximity fuse.

[@allangibson8494]

@@gondolacrescent5 VT (Variable Time) was a deliberate obfuscation of how the fuse actually functioned. It was in reality a metal detector with an explosive charge triggered when it detected metal.

[@ancuruadh6027]

@@allangibson8494 It was a miniature radar, not a metal detector. Very different technologies.

[@whyjnot420]

A little note about propellers and their speed: In some racing classes such as the APBA Stock V, there is a dedicated man on the throttle. It goes to show just how crucial control over the throttle is. It is as important as being able to steer. addendum: APBA Stock V = 500hp V-8 powerboats with a V hull around 30ish feet long, two man crew

[@saparotrob7888]

I can't be sure but I a believe a U.S. PT boat did torpedo a Japanese submarine. It was the PT 73 command by a LT. Cmdr. Quentin McHale. There were a few, 30 minute or so, documentaries in the 1960's about this particular boat.

[@neilscotter5191]

When HMS Queen Elizabeth met RMS Queen Elizabeth one signalled the other with "Snap" 🤣

[@soham6649]

Great! After listening to Drach talk for 3 hours in Sydney, I am rewarded with another hour of Drach talking!

[@Wolfeson28]

43:27 That whole thing reminds me of one of the books in the Aubrey-Maturin series. Aubrey is put in command of a squadron, but two of the ships have issues and their crews start regularly shouting insults at each other. One ship's captain is not-so-secretly gay and presumably having relations with certain members of his crew, whereas the other is a notoriously poor sailor. This leads to shouts of "what-ho the molly-ship" and "poufs ahoy" from the one crew, countered by "slack in stays" and "make more sail there" from the other.

[@davidvik1451]

In Conrad's "Typhoon" he describes a seen where the throttleman is opening and closing the throttle as the ship pitched over the waves to combat this situation. Liberty ships as well as others had fast acting butterfly valves after the throttle valve to deal with this situation. Sailing under such undesirable conditions came to be called a "Butterfly Watch". This system allowed for quickly cutting off steam to the engine without having to make changes to the main throttle valve.

[@nco_gets_it]

when I was stationed in Germany a unit stationed up near Hamburg (41st Inf Reg, 2nd AD) had a "scandal" in which some of the troopers got caught with a couple sheep. From that point on, anytime we ran into soldiers from that unit, we made fun of them by baa baaing at them. Yes, making fun of others is a normal, and indeed encouraged unofficially, thing.

[@michaelpielorz9283]

for sure a nice story with only one failiure a 41st inf Reg 2nd AD?did not exist until the good WWII propaganda strikes again!!you simply " forgot"to mention some NAzis!! But nobody is perfectexcept good oldbritish WWII propaganda.We know it is quite normal to Drachinifel Fanbois (;-)

[@brucewilliams1892]

I heard similar from a former (UK) Royal Marine about a soldier from the Argyle & Sutherland Highlanders (put that on a cap badge) being caught applying animal husbandry to a sheep. They were on the same base. Eventually orders were issued about baaa-ing noises, and presumably violence resulting.

[@brucewilliams1892]

Re overheating shaft bearings: I recall reading about HMS Rodney, I think it was in a book by Ludovic Kennedy. King George V and Rodney were in pursuit of Bismarck. KG being newer and faster. KG had signalled 'Speed of Fleet 23 knots' (or thereabouts). In R's engine room, men were fainting from the heat, mechanics were pouring bottles of Olive Oil into shaft bearings to help cool and lubricate them. It read like a total loss system by evaporation. R subsequently signalled KGV - 'I think your 23 knots are a bit faster than ours'.

[@vespelian]

I had the privilege of having the lifting screw principal explained to me, as a child, by someone who was well versed in engineering history, whilst sailing past Warrior on a small boat on the Cledau River, Milford Haven in Wales back in the 1970s.

[@toddwebb7521]

Looks like Drach is getting back from Aus without getting attacked by a drop bear

[@thatsme9875]

yes, he escaped the drop-bears, but ask him how he got on with the hoop -snakes!!

[@sadwingsraging3044]

@@thatsme9875 pffftthhh! Hoop🐍 Drop 🐻 are terrifying! 😳 Can you imagine not seeing one drop and miss someone walking in front of you and thinking you were just picking up a normal koala?!!? Might as well hug a vampire!😵

[@nichtvorhanden5928]

Regarding the Großer Kreuzer are no Battle Cruisers Question. Großer Kreuzer is a legal definition in the German Fleet laws. The designation was used for Armored and Battlecruisers because the Fleet Laws stated that the Fleet shall have a certain amount of Große Kreuzer. The Laws started before Dreadnoughts (and Battlecruisers) are a thing but Tirpitz didnt want to go before the Reichstag to explain we now need not only Große Kreuzer (your normal armoured cruiser up to the Scharnhorsts and Blücher) but we need Schlachtkreuzers too. (Call them Überkreuzer or Größere Große Kreuzer or what ever.) So the term Großer Kreuzer was kept for Battlecruisers mainly for leagal reasons.

[@timengineman2nd714]

0:46:04 PT Boats also had an issue with the fact their torpedoes were launched using a black powder charge. This, plus using light oil to lube the outside so they will come out of the tubes and not get stuck with the torpedo's motor running (and thus arming the torpedo) caused a large Flash, plus the "Tactic" of launching the torpedo at full speed (Hence the PT boat having a "bone in her teeth" of a big white & glowing in the dark bow wave!) letting the enemy exactly where to shoot! Also to start evasive maneuvering!!!

[@kemarisite]

The early ones did. Later on the tubes with black powder expulsion were replaced with lightweight racks for the Mark 13 torpedo and were basically just rolled off the side.

[@BurkhartBerthold]

Thanks a lot! Always a pleasure, Drach! Regarding the battlecruiser discussion, you are correct, not to go into too subtle semantics. For the German side an argument to call Schachtkreuzer rather Großer Kreuzer was the Reichstag, who had to agree to the funding. Großer Kreuzer sounds less expensive than Schlachtkreuzer; besides, this terminus technicus developped later. Regarding the armour, Siegfried Breyer, Schlachtschiffe und Schlachtkreuzer, München 1970, (highly recommendable!) gives facts & figures. BC von der Tann started with 6.200 ts of armour, equalling 29 % of ships tonnage (p.290), compared to her battleship contemporanian, Helgoland, with 8.200 ts armour (36 %, p. 289), Defflinger got 9,800 ts of Krupps best platings (37%, p. 299), compared to König with 10.200 ts of armour (40%, p. 296). Whereas similar data für the RN are: Lion with 6.200 ts of armour (23%, p. 147) compared to Queen Elisabeth with 8.600 ts (p.162), Renown with only 4.700 ts (p. 177) - no total data for Invincible, unfortunately, but her main belt with 6" plating appears pretty modest. So, the German BCs were rather kind of fast battleships (avant le lettre) than armoured cruiser killers. From a German point of view, there was - as you mentioned - no need to hunt ACs in the Atlantic, but to have a fast division within the HSF; therefore it was reasonable to have them battleworthy.

[@michaelpielorz9283]

say it simple :: Nooooooo not the germans!!!!!

[@frankbodenschatz173]

Thanks for another great drydock Drach! Safe travels.

[@johngregory4801]

Safe journey home, Team Drach!

[@TrickiVicBB71]

I think Italian Archives needs to be back for a discussion on Italian fleet destroyers and Torpedo boats with that question about that "Light Destroyer" question

[@thomaslinton5765]

"500,000 tons each way probaly does not make too much oddds for WW Ii" A 550,000 ton battleship certainly would be something to see.

[@mkaustralia7136]

“500 - 1000 tons” is what I think he said

[@thomaslinton5765]

@@mkaustralia7136 right: Aps 32:20 "five hundred a thousand tons each way." Still, a 550,000 ton BB would be a sight.

[@mkaustralia7136]

@@thomaslinton5765 would love to see it! Triple stacked quadruple main turrets fore and aft, huge battery of 5 inch DP and every radar known to the USA in quadruplicate for redundancy. And 40 knots. 😂😂😂😂 Hope Drach designs one on the computer game.

[@rupertboleyn3885]

When it comes to lifting screws, Warrior's screw could be lifted while her sister Black Prince's was fixed. Warrior was about 2 knots faster under sail than Black Prince, so in that case it clearly worked in that respect.

[@christopherrowe7460]

Thanks!

[@lamwen03]

A 'dead stern chase" would have been much more of a thing in the age of sail. Ships under power could yaw for a shot if necessary without losing the momentum that a sailing vessel would.

[@maynardcarmer3148]

I was on an Adams-class DDG in the late 60s. We were headed for the Caribbean in company with another destroyer when we encountered a nasty storm. Their crew wasn't quite quick enough when their props came out of the water, and they snapped a shaft. We had to escort them into, I believe, Mayport Florida.

[@tombuchanan379]

PTs main contribution was interdiction. They savaged Japanese resupply efforts in hundreds of bitter nighttime fights. Just came back from Colorado Springs and went to the WW2 Aviation Museum. Drach, I understand that once an aircraft leaves the deck, you tend to lose interest, but the Museum has an amazing collection of operational naval aircraft. The restoration area has original equipment and plans.

[@leftcoaster67]

Why does Battlecruisers cause so much grief? Bad enough we have vessels like the HMS Hood. Or Super Cruisers like the USS Alaska. Now people are questioning German Battlecruisers?

[@michaelpielorz9283]

I" Invincible, Queen Mary" had a simple story to tell(:-)

[@VintageCarHistory]

Aye, that rangefinder is a duplex. We had several WWI and WWII era rangefinders at the Fire Control Technician school in the plaza area at Great Lakes naval training base. We'd play with them, getting headaches and eye strain in the process.

[@ahseaton8353]

The Rodney and Nelson had the nicknames Rodnol and Nelsol. With their rear superstructure and forward guns, they looked like oversized fleet oilers, all of which had names that ended in "-ol"

[@ottovonbismarck2443]

To Italian DDs: torpedo boat class 1939, Matsu and Hunt are basically (then)modern DEs/torpedo boats from the late 30s. They all have DP main guns and in case of 1939 and Hunt a decent AA capability overall. The Folgores are DDs are from the late 20s and best compared to the A-D classes; none of them had DP guns nor great AA. Otherwise it's comparing apples to pears.

[@duneydan7993]

Hi Drach, could you make a video about the BYMS class minesweepers? They served in a lot of differents countrie's navy and one of those vessels left an important mark in the history of oceanic research as it became the famous RV Calypso sailed by Jacques Cousteau! Very few knows its history so i thought it would make a nice video.

[@ScipioAfricanusI]

Another fascinating and entertaining episode. Thank you. 2 quibbles. You go to lengths to describe in efficiency of PT boats in the Pacific. Whaat about the Channel and Mediterranean? Why were all forward gunned capital ships not more popular?

[@KPen3750]

Re HMS Acheron: I recently read Ships, Machinery and Mossbacks by Admiral Harold G Bowen. Bowen was basically the Rickover of high temperature high pressure steam for the bureau of Engineering, and the main issue was in fact the parsons design turbines that so many commercial shipyards knew how to make. He pushed for the development of everything answered in the video which was derived from the Curtis impulse turbine. I still gawk at the sheer length of Belfasts high pressure turbine compared to that of USN ships which are roughly half the length by my estimations.

[@johnkramer4454]

A related situation to overspeeding on submarines involves moving through a patch of lower density water and having the screw producing cavitation until the throttle can be adjusted down to provide the required thrust without the noise.

[@LudensP]

A bit late, but there is a time-stamp mix-up. The timestamp at 26 minutes is about HMS Akeron. The actual question about Italian DDs comes ar 30:05 .

[@TuomoKalliokoski]

About name confusion. Aunus... First one Tug captured 1919 from Soviets got name Aunus and served in Lake Ladoga until end of Winter War when Soviets captured it back and named it UK-100, later TTSH-100, and T-100, after the WWII it got disarmed and given to Soviet Latvia as tug RB-30. Second one Latvian transport Ilga captured by Soviets in 1939 or 40 and transported to Lake Ladoga, where Finns captured it 1941 and used it until 1944 when it was returned to Soviets and renamed back to Ilga. Third one Former trawler Kingston Emerald taken to military service as Aunus 1942 and served in the Baltic sea. Kept the new name after the war in civilian service. So the two latter ones served in the Finnish navy under the same name for multiple years... Aura: Aura II, formerly known as Seagull, Bore II and Halland. Given to the president of the Finnish Republic 1936 as a pleasure yacht with name Aura II. Pressed to service as an escort 1939 for Winter War, lost January 1940. Aura, originally build for customs service and transferred to maritime border guard in 30's. Pressed to navy for WW2, returned to border guard after the war and then to various different uses until removed from state service 1975. (I assume that the presidential yacht got the II due to this ship being owned by the state earlier.)

[@Eric_Hutton.1980]

Why did you pick USS Oregon for the Drydock photo? Were there any other contenders for the Drydock photo?

[@BHuang92]

What was the British assessment of Chinese paddleboats during the Opium Wars?

[@SSSeTEDS]

About the treasure ships... There seems to have been two sorts. Large show pieces and then more practical ones. Is Drach reading that the practical ships were larger than European contemporaries? I've also read that they were likely not as maneuverable and couldn't tack as well as caravels and early gallons. There is good reason why the treasure ships mostly stuck to established trade routes. Seems that European versus Chinese ship building were differently advanced.

[@billbrockman779]

Regarding the PT boats vs warships, it’s always been surprising to me how ineffective they were at Surigao Strait, which would seem to be an almost ideal situation.

[@fearthehoneybadger]

At Surigao Stait, the PT boats, despite making no significant strikes, provided valuable real-time intelligence on the Japanese advance.

[@wierdalien1]

​@@fearthehoneybadger like SF units on the ground

[@pauldietz1325]

PT boats didn't have to be very effective to be worthwhile. I mean, the Terizuki (sunk by PT boats) had a displacement 48x larger (2701 vs. 56 tonnes).

[@Cbabilon675]

The PT boats making their runs at the streets, actually were able to disrupt the fleet coming down so that the Destroyers and battleships that were together, actually got separated. So in that regards, they were effective.

[@fearthehoneybadger]

@@pauldietz1325 The question, though, is how 38 PT boats caused no damage to the Japanese force. Based on a complement of 2-4 torpedos per boat you would think that at least some of them would connect. On the other hand, intelligence gathered by the boats was sent ahead to the Seventh fleet which would be waiting to ambush and destroy most of the Japanese force.

[@PeterDouglas-l8o]

HMS Petard is believed to have torpedoed the Japanese submarine I-27. The submarine remained on the surface and Petard's attacks with shallow set depth charges, and with 4" HE, were ineffective. A hit was scored with the 7th (of 8 on board) torpedoes (no doubt a very embarrassed torpedo officer!) and the submarine destroyed.

[@jayfelsberg1931]

Members of the crew of the USS Long Beach (my home at the time) had a notable fight with the crew of the USS Chicago on Guam when LB was reliving Chicago as task force flagship. I have no idea of the cause of the fight, but as you may imagine, alcohol was certainly a major factor.

[@mark_wotney9972]

PT-59 sank I-3 off Guadalcanal.

[@pauldietz1325]

And that led the Japanese to suspend submarine supply shipments to Guadalcanal. So, big effect.

[@kemarisite]

Correct. Two torpedoes at 400 yards, which would be suicidally close against a surface ship, and only one hit.

[@jlvfr]

On the "frigate with 32 pounders": Portugal ordered a 32pdr armed frigate, the *_Dom Fernando II e Glória_* , right after the Napoleonic wars. Designed in 1821-24, it's construction was delayed by the civil war, only being launched in 1843. It was armed with a deck of 20 × 32 pdr, but these were caronades. It also had a gundeck with 28 × 18 pdr long guns. en.wikipedia.org/wiki/Dom_Fernando_II_e_Gl%C3%B3ria

[@Thumpalumpacus]

Bulkley in PT-59 reported sinking a Japanese sub, I-3 with a torpedo. Wiki reports it was later confirmed, for what that's worth. Wiki article here: en.wikipedia.org/wiki/Patrol_torpedo_boat_PT-59

[@lancejohnson1406]

The Japanese sub I-3 was torpedoed by PT-59 and sunk. 12/9/42. Think that definitely answers the question at 50:40.

[@tomdolan9761]

Considering the next treaty battleships built by the RN were the King George V class they must have felt the armament arrangement on the Nelsons was inadequate

[@keithmoore5306]

hey drach how about a wed special on the small boat war between the S boats MGB's and others in and around the channel during WW2?

[@jonsouth1545]

Ah, the idea of staying in a ship's 6. How to say you have no understanding of angular momentum without saying you have no understanding of angular momentum, at any battle range to stay in the 6 of the Nelson you need to be traveling at least 700 knots as you would need to complete a complete circle with a radius of 15+km at the same time the Nelson can complete a circle with a radius of only a few hundred meters. To put this out in a way you can more easily understand this grab a penny and draw a circle around it then draw another circle with a radius of a meter that has the same center as the previous circle, to stay in the 6 the outer circle needs to complete one revolution in the exact same amount of time as the inner one does and the bigger the distance between the faster you need to go.

[@cpawp]

Never heard anyone in germany talking about Bismarck with the pronoun 'he'. But - the 'Prinz' - 'der Prinz Eugen' - was a 'he' - as I was told by a surviving gunner on this ship.

[@gokbay3057]

Not the perfect source I know, but the German wikipedia mostly seems to go with feminine die.

[@ronaldfinkelstein6335]

The story about the sailor and sheep...brought to mind the parody song, "Dirty Deeds Done with Sheep", done by AC/DC.

[@rickkennett3192]

Which begs the question, why was there a sheep aboard Rodney in the first place.

[@kemarisite]

Reminds me of college where a couple of frat boys were caught together in the boiler room. Later: "We're not about to lose to a bunch of boiler room boys!" Except that they did.

[@tombogan03884]

9:25 Didn't USS. Constitution carry a 32 pound gun deck ?

[@tombogan03884]

I should have listened all the way through 😁

[@sadwingsraging3044]

🥵Note to self. Never get a month behind watching Drach videos because not only are you a month behind you will also have to add the two weeks piled on top of you as you are trying to catch up!😮 I seem to recall reading something about PT boats being quite useful for the network of island watchers/scouts with them being used as drop off, supply, and extraction vehicles for what I thought were named Kit Carson Scouts and then there was the Alamo Scouts as well as the South Pacific Scouts. For some reason I can't find a reference to the Kit Carson Scouts but I am fairly certain there was a group of scouts named as such and they used the PT boats as their _dial a friend_ whenever they had issues. Brave men all of them were. They knew the price of failure if they got caught.

[@Niels_Larsen]

Thank you for answering my, quite long question. I personally have no problem with calling the German Große Kreuzer battlecruisers. The question mostly comes from my curiosity in different nations classification of similar things.

[@tommasobalconi]

High pressure turbine distortion sounds like a very bad disease to catch if you're anything that wants to go anywhere fast.

[@kidmohair8151]

crickets and dogs...can cats (oh my) be far behind? the wonderful wizard of Drachinifel

[@paulbarthol8372]

To what extent did the Allies' ability to read Axis' codes effect the Allies' anti-submarine effort? In other words, how many interceptions/sinkings of Axis submarines were a direct result of knowing exactly where to look? Example: the USS England 's five kills. In a related way, avoiding U-boat wolfpack by rerouting convoys. If the Allied didn't counteract the German's own code breaking efforts, how many ships could have been lost? (estimate)

[@evanceaicovschi7230]

Have you made any in-depth videos of the history of NCOs in the Royal Navy?

[@crd260]

Re: overrevving engines / screws, I saw a video on Jay Leno's channel where he was showing off one of his old steam engines, it was equipped with a centrifugal governor to regulate the RPM of the engines. I wonder if any ships were ever equipped with these. en.wikipedia.org/wiki/Centrifugal_governor kzbin.info/www/bejne/eGGUfZqJbbhoeZo

[@Crosshair84]

Mechanical governors are REACTIVE, and not PROACTIVE in their operation. With such large equipment there is ALWAYS a delay in the governor sensing a change in speed and the governors correction actually having an effect on engine speed. Some engines, like the ones Jay Leno has, have enough of a safety margin that the governor has enough time to react and prevent the engine and drivetrain from going faster than what it can safely handle. For many large industrial engines, they either don't have such a large safety margin, the throttle response isn't fast enough, or both. Why not just make the governor more sensitive? For starters, that doesn't solve the problem of a governor being reactive and not proactive. In addition, you then have the problem of the governor "hunting". A hunting governor is constantly increasing and decreasing engine power, but never settling on a constant power setting. Or if it does settle it takes far too long to do so. Hunting is not a healthy thing for most engines. So a governor that is insensitive enough to prevent hunting won't be sensitive enough to prevent an overspeed. The 140 ton, 600 hp, SNOW gas compression engines, for example because I am reasonably familiar with them, does have a centrifugal governor to regulate their speed to, IIRC, 90 to 100 RPM, depending on the exact load needed. Unfortunately, if the gas compressor suddenly goes offline for whatever reason, the engine will overspeed within seconds. The main governor is simply not fast enough to correct for the load on the engine suddenly going from 600 hp to 0 hp. There is a secondary failsafe governor on the SNOW engine's 18-ton flywheel whose sole purpose is to sense an overspeed condition and immediately cut all power to the ignition system within 1 revolution of the flywheel, shutting the engine down completely. I believe this occurs at 105 rpm. The overspeed ignition cutoff requires the engine to come to a full stop before it can be reset. For a gas compression engine on land, such a failsafe governor makes perfect sense. If it trips and shuts the engine down, it has protected an expensive piece of machinery and the operators have plenty of time to correct any faults that caused the overspeed situation in the first place. On a ship though, you can't just allow your propulsion to to be shutdown if it overspeeds. TL;DR, governors are typically not fast enough to be able to correct for such a wildly variable load on large engines. You need to proactively adjust the throttle BEFORE the change of load occurs, not after, to prevent or reduce an overspeed.

[@jeffwilliams8066]

Why did the Washington's and South Dakota's crew have to be separated at port?

[@Wolfhound_81]

Schlachtkreuzer being compared to "he" bismarck? Don't agree, Schlacht literally translates to battle, so there's your battlecruiser.

[@prussianhill]

That question definitely seemed like a semantics question.

[@Wolfhound_81]

@@prussianhill Agreed, but Drach did go into the semantics question about heavy cruisers etc.. only on the matter of Schlachtkreuzer did he bring the weird comparison to Bismarck being called a "he".

[@gokbay3057]

@@Wolfhound_81 He didn't bring it up, it was part of the question. He simply read it.

[@WarmongerSmurfOnXbox]

So a frigate can’t resist 32 pounders. Does that mean a frigate armed with 32 pounders would be a battle frigate?

[@johnfisher9692]

with some of the Japanese ships so lightly built the hulls had to be strengthened, how was this done? Were the ships disassembled to add more hull frames or was there a way to do this without resorting to such drastic expence?

[@dylanleonard9624]

I was wondering what kind of designs you, personally would come up with when it came to designing a nations battlecruiser fleet. I've been playing around in UAD doing that and I believe that there are some interesting things you can come up with when you look at what was historically built and what you could do for a response to them. I would like to show off my designs to someone who has an understanding of naval warship design (my understanding is very VERY informal) and see what they think of my approach to the battlecruiser question. What would you do? Who would you plan of going up against and how would you counter their designs with your own?

[@RonJohn63]

Overspeeding is a lot like an electrical short circuit. And hosing down bearings is similar in nature to a water block CPU cooler.

[@RonJohn63]

@@jackgee3200 a short circuit happens when there's no more resistance; thus, current can rush through, quickly burning up the wires (if there's no fuse). Overspeeding is also a lack of resistance, which causes bearings, etc to burn up.

[@RonJohn63]

@@jackgee3200 analogies are never perfect.

[@williamsmallshaw5266]

Re: PT boats, these craft lacked any form of targeting equipment. Basically a very simple and crude triangular device. There was no way for these craft to do any relative motion calculations. Larger US craft, destroyers and submarines carried the TDC to enable targeting. A device too large for a PT boat. The chances of a PT successfully creating a targeting solution on a moving warship was effectively zero.

[@Edax_Royeaux]

Personally I likened German Battlecruisers more towards "Light Battleships" like one could classify "Light Infantry", which preformed the role of recon for the main body and harassed the enemy.

[@MAAAAAAAAAA123]

I’d argue the later British battlecruisers fit that role too tbh

[@Edax_Royeaux]

@@MAAAAAAAAAA123 I'm not sure what you mean about later British battlecruisers. If your referring to the likes of Renown and Hood, I'd argue these would be the long range hunters of cruisers and commerce raiders. The German Battlecruisers of WWI, wouldn't have been fast enough to catch post-treaty cruisers.

[@MAAAAAAAAAA123]

@@Edax_Royeaux “later” as in Queen Mary, Princess Royal, Tiger, and Lion

[@johnrohde5510]

Could it be that Nelson and Rodney were both *shorn*?

[@mikeynth7919]

And with a stern chase where the forward turrets cannot bear, the target ship becomes a much smaller target, and can make for a very effective smoke screen.

[@hughgordon6435]

Yeayyy, floppy , not quite as soothing as Mrs drach typing away?

[@nowthenzen]

00:43:27 - "That's Black Bart's Girl!"

[@pd-kx4qw]

I wonder if over-speeding is what happens when you take a car off a jump and hear the engine rev or if that’s just the person behind the wheel freaking out airborne and stomping on the gas.

[@augusteden6097]

good question. my guess is - the rev sound occurring when wheels lose the resistance of the ground is probably a few dif things, over speeding rpm spike being one.

[@Thumpalumpacus]

I don't see that an all-forward main battery shortens the citadel. You still have two or three magazines, a bridge, and engine rooms to cover. You also still have magazines aft for the secondary armament. Splitting main armament allows putting secondary amidships, meaning their hoists and so on are covered by main belt. And if the forward turrets can do over-the-shoulders (which is a basic premise of your argument), they can still do that anyway, while the ship still eliminates any blind arc aft. Where's the savings on length coming from?

[@zoranocokoljic8927]

A question: did RN, or any other navy, have regulations concerning beards and mustaches of sailors and officiers?

[@craigpalmer9196]

overspeeding, steam loco, drivers slippiing very bad to happen

[@bigsarge2085]

✌️

[@michaelpielorz9283]

German BBattlecruisers were those ships tha reduced british squadrons(:-)

[@Trek001]

Was that _Rodney_ crew member Welsh, perhaps?

[@tomdolan9761]

Why would a surface vessel use a torpedo to attack a submarine?

[@sskuk1095]

Hey, Drach, you forgot a question here. :) 00:26:52

[@icefox192]

A personal question if I may: from your discussion of engineers' reports you're obviously capable of deciphering mechanical engineering technical language, is there a reason you didn't go into mechanical engineering professionally? Was civil engineering simply too convincing a career move?

[@sadwingsraging3044]

Fake 👆🏻

[@thomaslinton5765]

PT-73 , not the Mchale's Navy version, but the real boat: kzbin.info/www/bejne/mmjMm3-OqaiSY6M Turns out it ran aground in 1945 near an enemy-occupied island and was destroyed to prevent capture. Crew was rescued by another PTB.

[@WALTERBROADDUS]

😘🐑........Uh, time to get that guy liberty....😏

[@nmccw3245]

What are you sailors doing? Mutton sir.

[@merlinwizard1000]

4th, 18 June 2023

[@japekto2138]

Bleating....... HAHAHA. True navy traditions.

[@ottovonbismarck2443]

Time stamps are a bit in disorder ...

[@thomaslinton5765]

HYPERLINK TO "REPLY DIRECTLY"?

[@salty4496]

:)

[@battleaxe51]

Question. Why do you have so much loathing for the U.S. Navy? I hear it in a lot of your Vids when it's about them.

[@claypidgeon4807]

Fourth