Spirit - OK, I got it now, the US numeral flags
are also the NATO numeral flags
, so this is the 'modern universal civilian' representation of AD28.
I've reworked the UK 1937 signal flags to incorporate the numeral flags, not the pennants. My bad.
So if the internet
is right, and the original code for 'splice the mainbrace' was a UK signal hoist
, it *might* have looked like this prior to NATO and the International Code.
According to other research
I found, the US/NATO flags are also the basis of all 'Allied' signal hoists between vessels on manoeuvres, and the INTERCO (abb. of Int Code of Signals) is only used between non-military vessels or between military vessels communicating with non-military.
If naval vessels choose to use the international code, say if civilian vessels need to be able to read hoists, then they preface a hoist with the flag for CODE - the red pennant with white circles on it.
But I hope the following is a correct representation of what a pre WWII UK naval hoist for AD28 might have looked like.