Comments by "Frank DeMaris" (@kemarisite) on "USS Lexington - Guide 046 - Aircraft Carriers (Human Voice)" video.

@alganhar1 you will take a higher radiation dose on the flight there than you will diving on the carrier.
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@animeboy-qy5sq the biggest reason is that the 6" gun cruisers had about the same manning requirements as the 8" gun Baltimore and Des Moines class cruisers and the Navy had FAR more ships than it could use outside of an existential war. The Des Moines guns had a rate of fire comparable to the 6"/47 of the Cleveland-class on a pro-gun basis, and threw a much heavier shell to a longer range, 30,000 yards compared to 26,000 yards. The 6" gun cruisers only existed because their 10 rounds per minute per gun was drastically better than 3-4 for the 8" gun cruisers, but when the Des Moines class catches up on rate of fire the 6" gun cruiser kind of loses its reason for existing.
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@thegreyghost5846 the 20mm Phalanx can reach out to about 1600 yards effective range. Since a close formation is about 500 yards, and 800-1,000 yards isn't unusual (and maybe even farther now), that wouldnt offer much protective coverage for other ships.
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@joesvoboda3509 he's said before that WW2/early cold war is about as far as he cares to go, because it reduces political discussions and avoids talking about information that's still classified.
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@tigersharkzh yes, and? If one desperately wanted to live there and eat the shellfish, as opposed to visiting for a few days to dive the wreck (which is, after all, what we're talking about), then one could protect oneself with iodized salt beforehand. Load the thyroid up with iodine so that the iodine-129 has no place to accumulate and gets excreted. Obviously, if one chose to live there and eat shellfish full time then one would need an ongoing supply of iodized salt to maintain that protection. It's not something any radiation protection professional would recommend, but it could be done.
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@schullerandreas556 some Soviet missiles had a 1 ton HEAT warhead as an option.
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@robert rowe heavy and light cruisers are defined by the naval treaties. The Washington Treaty defines a cruiser as a ship displacing no more than 10,000 tons and with guns no larger than 8". The London Treaty created a sub-group of light cruisers, which are defined by a gun caliber no larger than 155 km (6.1"), while vessels with guns between 6.1" and 8" defined as heavy cruisers. Battlecruiser is an earlier term, not defined in the treaties, referring to a large warship with battleship-caliber guns that is significantly faster than a battleship but, as a consequence, tended to be less well armored. Under the naval treaties, battlecruisers were defined as capital ships with the "real" battleships.
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@animeboy-qy5sq a cording to the wikipedia entry, Salem did have a few 20 mm guns. However, by 1945 the kamikazes had demonstrated that the 20 mm round was inadequate to break up an attacking aircraft and prevent it from striking the ship. All US ships saw their AA suites move nore heavily toward the 40 mm Bofors during the last year of the war, and the US began working on the 3"/50 Mark 27 as a replacement for the Bofors.
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@kiwivogel there are pictures from dead ahead that clearly show the two-gun turret being narrower than the three-gun turret. If the barbette is the same diameter for both, then it may be a matter of the hull form not allowing the desired ammunition stowage of 150 rounds per gun for three guns in the 1 (and presumably 4) turret positions.
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@tigersharkzh wrong, fission fragments collectively decay away to background within about five centuries.
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@tigersharkzh which does not contradict my point. I said the fission products decay away to background over about five centuries, not zero. That iodine is a problem because, when inhaled and metabolized, it concentrates in the thyroid where its weak beta particle emission can actually cause some harm.
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@tigersharkzh you realize that iodine is a gas, right? As a gas, it escaped into the atmosphere and is dispersed worldwide, so going diving at Bikini will make no difference. If it's trapped inside a solid fragment, then it's encapsulated and the object itself will provide enough shielding to protect you from the beta particles.
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@tigersharkzh you are correct about iodine in general. However, at what point during the nuclear detonation were the fuel or detonation products at STP?
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@kiwivogel the twin turrets are narrower and placed closer to the bow and stern for the streamlined hull form. If the triple turrets were on the main deck with the twins superfiring over them, the hull would get fat too quickly (moving from the end toward the superstructure) and slow the ships down.
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