Grid BF47 , is this a bug or does traffic in fact pass through this area?

[Paul Riley]

Originally Posted by eagleboy

Just happened to be assigned to BF47 in Decmber 1939. First 24 hours there was nothing. Second 24 hours yielded a British Medium Cargo in BF476 heading due North.

Last night I nailed a medium cargo for just over 5000 GRT in BF42 heading 70 degrees at 7kts,heading for what looks like directly towards the mouth of the channel (if I extend his course line it matches perfectly with the channel,or not far off).Looks like I may already be on a major shipping lane already! I then logged its co ordinates into my co ordinates book for future use.
Also seems like I may have experienced a fault with the torpedoes too,I decided to try 2 magnetics (spread 2 deg) against the cargo set for 10m,1 hit square under the funnel the other aimed at the foremast passed right under it (the infamous depth keeping problem).Finished the bugger with 30 rds or so from the deck gun.I really need to get some gunners trained up for next patrol!,30 rds is a bit expensive.
Let the happy times commence!