Archive image from page 62 of Dahlgren (1977). Dahlgren dahlgren00mcco Year: 1977 Range Operations 53 Inspection of a 14' 145 MARK II-1 gun that exploded after the second round was fired, May 1924. The bulk of the range work moved very fast into acceptance work for the production of projectiles, propellants, and fuzes. That got to be the big firing load, but there was experimental work—it had to come along. Mostly, we looked over the armor tests to determine the quality of the armor, reviewed the tests, and determined whether trends in the armor quality were bad or good. Especially, we wan
Archive image from page 62 of Dahlgren (1977). Dahlgren dahlgren00mcco Year: 1977 Range Operations 53 Inspection of a 14' 145 MARK II-1 gun that exploded after the second round was fired, May 1924. The bulk of the range work moved very fast into acceptance work for the production of projectiles, propellants, and fuzes. That got to be the big firing load, but there was experimental work—it had to come along. Mostly, we looked over the armor tests to determine the quality of the armor, reviewed the tests, and determined whether trends in the armor quality were bad or good. Especially, we wanted to identify the bad traits and eliminate them quickly from production armor that was being produced to go aboard ship. Armor came in different sizes. If it was for battleships, it was pretty thick. Deck armor would be around 5 or 6 inches thick. Turret armor could get up to maybe 12 or 14 inches thick. We were testing projectiles, too. The trick with the projectile was to build one that would, hopefully, defeat armor, and the idea with armor was to build it to defeat a projectile. Then early in World War II, a lot of reserve officers came in, and we had to get people working on armor who hadn't known anything at all about it. They didn't know the terminology, and there's a great deal of unique terminology in armor work. There were things like the plate is dished or it's penetrated or it's perforated or you throw a button out of the plate or it spalled—all sorts of terms such as these. The old-timers got together some good pictures and then said, 'This is what we mean when we say 'button,' and this is what we mean when we say this and that.' We put out some information for instructional and reference purposes. All of these reserve officers, only a couple of months earlier, were working in offices somewhere, and they had never even seen the Navy. Light armor got to be very important. They needed light armor for landing craft and for airplanes and ran a large number of fra
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