



The earlier flag is blue with a red diamond containing a white H. H216 has a black funnel with a broad band of this flag, though the flag itself is assumed to apply. H48 has a yellow or buff funnel with the same broad flag band.
The later flag is white with a very broad blue horizontal band, a red diamond and white H. H217 carries it as a broad band on black; H218 uses grey with a black top. A version seen on Katerina in April 1965 lacked the black top.