Good post!
Plot the latitude and longitude on Google maps/satellite.
It appears to be about 10 miles offshore, just where the water starts shallowing and at the edge of the channel.
A logical place to anchor.
Decimal latitude and longitude you enter in google is about:
29.833382, 48.716818
Which corresponds pretty well with the degrees, minutes, seconds format in this picture
http://www.mod.uk/NR/rdonlyres/DB42AC92-E1CC-4478-9910-B8CB299A6612/0/HeloGPS.jpg