Turret Pan, Fort Drum Construction, Fraile Island from CSDG.
It looks like one turret pan is rigged to be installed-zoomed in on the lifting machinery. This is a picture of Ft. Drum under construction on Fraile Island in Manila Bay, given to me Glen Williford, a leader in the Coastal Defense Study Group (CDSG). The original picture name was:
Pcon-193 77F-111-135-221 Ft Drum 5-20-17-p18b7v16jddl61nsm1cnc106q1cos