Coastal Command Area Codes Dutch Coast Sept 44

[Alex Smart]

Hello Andy,
Don't know if this helps ?

In this link you will see two squares, marked as wC and wH.
If you look at the whole map you will see that if it follows the pattern the squares next to those noted will have been wD and wJ.
Then within those squares another set of squares with a single letter "M" and "R".
Take squares "M" and "R" and within those squares yet another set of squares, this time numbered in both cases "2".

https://www.echodelta.net/mbs/articl...sh_cassini.gif

I would put forward the possibility that the number 425 relates to time, 4h 25mins, "12" perhaps the number of vessels in the convoy and as you offer, UN would perhaps relate to the type of vessel as been unknown.

Then again I may be completely wrong .
Good luck, hope you find the answer.
Alex