79 CHAPTER Il, SECTION 3 a Figure 2-96. STATIONS: PURPOSE: SITE: USER: PARTICIPATION: CONSTRUCTION: 1831.01 and 1831.02 Light Rafts Dog (in Lagoon) LASL 11 and 13 4-17-56/6-13-56 The stations were 21’ x 44’ pontoon barges made up of 21 Navy cubes welded together with 3” x 3” x 14” L-brackets. Mounted on the deck was a two-foot high 19 x 29’ platform consisting of a wooden floor supported on steel- framed grid. A standard 14’ square tent was erected on this platform. Around the platform extended a continuous plywood railing from the barge deck to 24% feet above the platform. The railing was solid. The tent contained a 6’ x 10 roll-up steel door on one end, mounted on a steel frame 11’ high by 18’ long located on the outside of the tent end wall. Two 12”-diameter searchlights were mounted on the deck so as to be aligned on Station 1830. Station 1830 One station was located between a point 300 to 2,000 yards past Barge 13 and on line extending from the center camera port of Station 1830, GEORGE,through a point 50 to 100 yards from the barge location toward Station 1320, DOG. The other raft was located 300 to 2,000 yards past Barge 11 and ontheline extending from Station 1830, GEORGE, but through a point 100 to 200 yards from the barge location toward Station 1320, DOG. The movement of the raft station at center was limited within a horizontal area having a 15-foot radius for the station associated with Barge 13 and 25-foot radius for the station with Barge 11. The pitch and yaw were limited so that the base of a 20degree right circular cone projecting from the raft would cover the center part of Station 1830, GEORGE. To accomplish this the barges were equipped with mooring winches at each corner supported on a diagonal frame. From each winch 44” mooring cable was led to buoystied to concrete anchorblocks, which were in turn attached to 500-pound anchors with 180 feet of chain. Page 2-107