Comments by "Sar Jim" (@sarjim4381) on "The Drydock - Episode 033" video.

For once I was actually in bed when this video came out. It's kind of weird watching this after I have awakened instead of trying to stay awake. The most effective nuclear naval ordnance would have undoubtedly been the nuclear depth charge. A lot of USN nuclear depth charge testing is still classified, but what's available shows a single Mark 90 nuclear depth bomb could have destroyed any submarine within a 5-7 NM radius of the ship or aircraft that dropped the bomb, and the damage radius was about 10-12 NM. There's a good film about Operation Wigwam, which included a test of a Mark 90, at https://archive.org/details/gov.doe.0800018.
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Nguyen Johnathan I was responding to your comment regarding Swedish 152mm guns. They had many of the same problems as the USN 152mm guns.
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Why didn't more navies adopt the transom stern? Almost all naval vessels today have transom stearns, so why not earlier ships? It seems the USN was the only navy that routinely used transom sterns in the late prewar period.
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Nguyen Johnathan The biggest problems with 152mm (6") DP guns is the amount of magazine space required for enough ammo for sustained periods of air attacks and the weight of the shell itself. The 127mm shell at ~55 pounds (~25 kg) was at about the upper limits of what could still passed and loaded by hand if all else failed. The 152mm shells weighed in at 105 lbs. (47.6 kg) for AA Common rounds. just too heavy to be manhandled except by a few weightlifters and, even then, not for long. Navies generally plan for worst case scenarios, and 152mm AA guns would have been useless without the hoists and power loading and ramming they needed to work. You also needed a much larger ship to handle the equipment needed for training and elevating the 152mm turrets and guns as well as magazine space. There's a reason the Worcester (CL-144) "light" cruiser class was longer and heavier than most heavy cruisers. In the end, at least with the USN, it was decided the 127mm gun was sufficient for AA use compared to the complications introduced with the 152mm gun.
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