JOHNSTON ATOLL F&SNO. 01009 USER SCIENTIFIC TITLE Gun Mounts - Subtask A626 STRUCTURE FACILITY NO. TC {$000) DASA/ PRE-GO EAO 1106-| 4101-61 91-3-94 thru 105 incl. None FUNDING AGENCY RDT&E SCIENTIFIC STATION NO. Prior Cost 1-3 ENGR PROC 2.2 0.5 6 CONST (A TOTAL BOD CO+14 FURN 2.7 POST-GO Estimate 5/65 TOTAL 2.2 0.5 14.9 14.9 14.9 17.6 PRIOR YEARS ENGINEERING Completed. Drawings: 91-3-94-Cl PROCUREMENT 91-3-94-E]1 Completed. POST-GO CONSTRUCTION This installation will include eight 5-in. guns and four 7-in. guns to be located on a 58 x 380-ft. leveled and compacted area, approximately 75~ft. from the southwest shoreline, in the vicinity of the large rocket launchers. A clear zone will be required for the sabot impact; this area will range up to 1800 yards on a bearing of 190 degrees true (+ 4 degrees). The 5in. gun will be mounted on 155 mm carriages weighing 21 tons. These units will be elevated by TC furnished blocks. The 7-in. guns will be mounted on 280 mm carriages, 10 x 38 x 12 1/2-ft. high weighing 45 tons. The overall length will be 84-ft. when the prime mover is attached. These guns will be capable of self elevation. Twelve 6-ft. diameter tracking antennas will be located on a graded area of approximately 7500 square feet atop Building 881 and directly away from the The antennas are portable and will not require special foundations. event. Two 10 x 40-ft. TC furnished TM vans anda 10 x 40-ft. TC furnished fire control van will be parked adjacent to the south side of Building 881. The TM The fire vans will each require 20 kw, 208 volts, 60 cycle, 3 phase power. control van will require 10 kw, 208 volt, 60 cycle, 3 phase power. This power will be terminated at switch boxes mounted on 4-ft. poles adjacent to the trailers. VOL I April 1969