International Code of Signals (Miscellaneous)

These signal flags are from a flag plate of house flags. They are all 1:2 versions of the ICS flags, except the C-G range, that is composed of triangular flags (also in proportions 1:2, with the following characteristics:

C - White with a red disc shifted to the hoist.

D - Blue with a white disc shifted to the hoist.

E - A red-white-blue vertical tricolour.

F - Red with a white cross throughout shifted to the hoist.

G - A yellow-blue vertical bicolour, with the dividing line shifted to hoist.
Jorge Candeias, 15 January 2005

They are shown here, on a page from the German 1902 Brockhaus encyclopedia (pdf file):

These were still around in 1922, see

"Standard Seamanship for the Merchant Service, Riesenberg, Felix, C.E.D., Van Nostrand Company, 1922, "International Code Flags" p559. Changes include "F" and "L"."
Jan Mertens, 16 January 2005

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image by Dominique Cureau

F - Older version. Red with a white dot.

image by Dominique Cureau

L - Quartered blue and yellow

image by Dominique Cureau

Answering pennant - like the current flag but sharp-tipped
Dominique Cureau, 5 May 2005