what do they mean by this grid location in the GW Mod

Everybody's missing his point. He knows how the grid system works, but wants to know why he got a reference to a grid with no letters, just numbers.

Originally Posted by U-5000

Usually its referred as a letter coordinate like AN53 or something like that, but all messages have a 4 number like 1253 instead. How do I find where the convoy is? Thanks

And the answer is, you don't find that convoy. Those messages are copies of actual messages sent during the war, and have no bearing on the game. In fact, in one of my patrol logs I referred to that message, saying 'I suppose they know where they are, because I sure don't!". Later, when BdU responded by sending two more u-boats to the area, I wrote "Well, it looks like someone else knows where they are, too, and it's none of my business", or something like that.

Those messages are just for immersion; you can't act on them.

[edit] I said everybody missed the point. Upon rereading, I see that Kpt Lehman got it just fine. Sorry.