Yes, seems unfortunate to me how close some people think getting to a ship - which is the stand on vessel inside harbour limits - is OK. If, as in this case, you hear 5 short blasts - that is the WTF are you doing signal. If you hear it directed at you, you have f%^$ed up! Keep out of the shipping channels when you can, and cross as fast as you can, at 90deg if possible.
Within a mile of the bow is too close!