Comments by "Sar Jim" (@sarjim4381) on "USS John R Craig - Guide 158" video.

To my knowledge, the current crop of Littoral Combat Ships are the only major US vessels to have aluminum hulls. All other major USN ships have steel hulls. Some use aluminum in the superstructure, but none below the waterline. The current crop of aluminum hull LCS shows we still don't know how to control galvanic corrosion when aluminum is in contact underwater with dissimilar metals. It's something of myth that aluminum in the superstructure is a fire hazard. The RN did extensive studies after the Falklands War regarding the use of aluminum as contribution to fires. Their conclusion was that the use of aluminum contributed little to nothing in shipboard fires.
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The C/41 gun was never built and we only have conjectural construction details. The Japanese Type 98 equipped classes of aircraft carriers, cruisers, and destroyers, with about 100 of the total 169 built used for shore batteries. The Japanese considered it their best AAA gun and, given the limited exposure of the gun to USN aircraft so late in the war, most pilots agreed. Almost all major Japanese ships used shells designated "Common Type 3" for AA use. These had a range of submunitions, most being incendiary filled tubes that were supposed to be detonated some distance from the muzzle. US fliers who saw these rounds in action described them as great Fourth of July show, but not good at shooting down airplanes.
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@Cbabilon675 It's hard to tell since the stabilised mount of the C/33 guns defeated the guns in the AA role. A 127mm gun, other things being equal, will always be a more effective surface gunfire weapon just because it has a higher payload than a 105. The single mount C/32 105mm gun was used in primarily surface roles on ships like torpedo boats, minesweepers and U-boats since most of these were in low angle mounts not suited for AA use. Some had modified DP mounts late in the war, but it's hard to judge their effectiveness since they didn't see much use. Some indication of how well they performed was that almost all U-boats had the C/32 wet mount guns removed by mid 1944 in favor of more light AA guns. The Norwegians, OTOH, liked the 105 for shore battery use, with some ex-German guns remaining in use into the 21st century, before the forts were taken out of commision.
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@spyrosvassilakis4212 I don't blame you! I mean, look at the wages we pay this man! :-)
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@Cbabilon675 You're more than welcome. Your grandfather was lucky enough to crew what was undoubtedly the best all around gun of the 20th century. Merry Christmas and Happy New Year to you and yours as well.
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@RCAvhstape This is another Falklands War myth. Sheffield was an all steel ship. She was sunk due to negligence and stupid decisions on the part of the command staff. HMS Antelope, Ardent, and Sir Galahad were three of the nine ships sunk that happened to have aluminum superstructures. None had aluminum hulls. There's no evidence that the aluminum burned or played any part in the sinkings. Any ship hit by enough bombs, or a bomb that hits the right place in a ship, is going to sink, regardless of materials in the superstructure
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