No, it doesn't. It's just a memo that tells you what is the scale of the meridien tab at the current zoom : here 50km so 05' per dash.
I think Kaleun Freddie was to hard cutting the zoom levels. I find that if you only cut the three first, you still get a 2500m zoom which gives you a 15" resolution, whithout showing you the position of your sub. That's how I find that the exaction longitude of Bergen is 8 18' 45" E (entry of the pens).
I also managed to include the SR/SS chart in game, but as free sheets, one page per month, and not as a book which was my first thought. After all "do it simple"...