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co.yma"!—i<br />

MEETING THE SUBMARINE PROBLEM 699<br />

THE 820,000 U-BOAT SWATTER<br />

This little cralt is shown here making 26 miles an hour in a Government tria<br />

lay mines. These submarines sneak<br />

down outside a port where the shipping<br />

is particularly heavy. Each submarine<br />

can carry twelve mines. These<br />

mines are connected one to another by<br />

verv lieavv cable, also from each mine<br />

is a lighter cable attached to an anchor.<br />

The mines are dropped overboard one by<br />

line, the submarine running submerged.<br />

The anchor falls, catches on the bottom<br />

of the harbor and holds the mine in place ;<br />

the mine is now submerged. Then the<br />

OUR LAST "CLOSE-UP" OF A U-BOAT<br />

This craft, the U-53, visited Newport Harbor before the breaking of diplomatic relations, and was visited bv Admiral<br />

Glcaves "f our navy.

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