Talk:8inch Triple Gun Mount Mk.9/@comment-44299528-20191102003305

This weapon is interesting, but in real life it was one of the worst American heavy cruiser weapons ever made, but justified. During the treaty many medium-caliber weapons had problems with excessive dispersion, including the No.2 and Mark VIII 20.3cm/50 which was an excellent individual sleeves guns but with 380 tô 410 meters of dispersion (at 22km) in its early career, however the Mark 9 surpassed the 1,830 meters of dispersion because of the very high MV. Another reason that caused top-heaviness and roll problems on USN cruisers is that each barrel had a heavy construction of almost 30 tons, USN was not satisfied with that and decided to rearrange its ships with Mark 14 with less mutual interference. of shells and better rigidity, and with 17 tons, much lighter. It did not use 152kg shells except the Mark 15,16RF which were the first USN cruisers guns with individual sleeves. From 1938 all the heavy cruisers of the treaty were satisfactorily resolved, in the defective armament part and the metacentric height reduced so that extra weight of new equipment was placed during the campaign.