Call it luck or karma, or random computer coding, but don't call it skill

[Harmsway!]

On my first patrol with RFB I didn't see much so I did just like you and went fishing in the harbor. Not a problem. Mine is set to manual targeting though. I don't remember if I got a lock. Isn't needed.

[Capt. Morgan]

I've had a similar experience. Anchored ship, clearly visible, but unable to lock on - even at 1200 yds.

Sent her 2 torps. anyway, and she exploded nicely and went to the bottom, but no "she's going down" message, no tonnage, and no red ship icon on the map even though I watched her sink.

I'd guess is that it's a game glitch. I did notice that she was so close to the shore that when I zoomed the map out, her position was indicated as being on land, so maybe it happens if a ship spawns in the wrong place

[Diopos]

Originally Posted by Capt. Morgan

...
... so maybe it happens if a ship spawns in the wrong place

Mmmm!

IIRC if you hit a "big" ship (large draft) in port and it "sits" on the shoals its tonnage doesn't register.

Seems we're dealing with some of the code's boundary conditions.