THE INTERNATIONAL CODE OF SIGNALS

GEOGRAPHICAL HOISTS

623

Example.—Letters A A AS mean Aberdeen, Scotland, and would
be hoisted.—

A

1st sub
2nd sub
S

1st substitute means repeat the top letter of
the hoist, namely A, and 2nd substitute
means repeat the second letter of the hoist,
which, in this case, is also A9 thus making
the hoist A A A S.

Note.—It might be a useful lesson in flag identification if the student
were to put in the colourings of the respective flags in the several
illustrations given here.

Example.—Letters A B U V mean Blacksod Bay, Ireland, and
would be hoisted.

A
B
U

3rd sub

3rd substitute means repeat the third letter
of the hoist, which in this case is Z7, thus
making the signal A B U U.

These are two examples of geographical signals intimating thp
names of places and all such signals are four-flag hoists beginning with
flag A. The hoists and the names of the places are arranged in the
Code book in strictly alphabetical order, in parallel columns, the name
of the place and Its hoist being alongside of each other, so that code
and decode are made simultaneously at the same opening of the book.