September-October - Air Defense Artillery
September-October - Air Defense Artillery
September-October - Air Defense Artillery
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) COMBINED CORRECTION CHART 71<br />
tI. site of forty feet for every 1,000 yards of range above<br />
(he minimum range. This table appears below. Corrections<br />
ror nonrigidity of trajectory are included.<br />
These two tables were then combined into one with<br />
properregard to sign. In our case the height of site correctionwas<br />
always plus, the elevation difference correction for<br />
(hequadrant from 1660 to 2460 ~yas plus, while the elevation<br />
difference correction for the quadrant from 96 0<br />
to<br />
1660 was negative. The results are shown in Table III.<br />
Table III was then translated into the chart shown<br />
in Fig. 1. \Ve used colored-in K's on our chart for the azimuth<br />
lines to facilitate reading. A T-square graduated in<br />
range aids the operator. Final computations are made to<br />
the nearest whole mil.<br />
The correction is computed initially and applied directly<br />
to the height of site scale of the 1\'1-8sight. From this point<br />
identical elevations are sent to all auns.<br />
e><br />
Of course by the time we had this nicely solved our position<br />
was changed and we had to throw it away but it was<br />
a problem which may face someone else some day.<br />
U. S. Navy Photo<br />
Not much has been written about our submarines in this war, since secrecy is one of the subs' weapons and prote~tive devices,<br />
but now the wraps are off to some extent. This is the TillOsa, returning to the Pearl Harbor sub base after a successful patrol in<br />
which she and eight other subs sank 46 Jap ships in the Sea of Japan, with four "probables."
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