5 INCH GUN

USS San Jacinto carries two 5 inch, 54 caliber dual-purpose guns. One is mounted on the forcastle, the other on the fantail. Each can fire at a rate of 16-20 rounds per minute. The mounts are unmanned, being automatically loaded from the handling room below, where a crew is stationed to load the feed drums. Fire control is handled by the SPQ-9A radar system, in a dome on the foremast.