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