IT'S NOT a myth that our national flag hung upside down is a recognised distress signal (letter 28 April). However, I've only ever seen it referred to in a marine context.
British-registered ships fly not a full-scale Union Flag, but a monocolour ensign with a reduced Union Flag in the top corner. There is no problem about noticing at once whether it is upside down. I agree, with radio and flares, it's not really the first line of resort nowadays, but you never know - it might come in handy some time.
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