interesting factiod back up with Google Maps!

"Twice a month, at the full moon and new moon, high tides are at their highest, and this is when a ship, be it 3,000 tons or 50,000 tons, can be
driven the farthest onto the beach."

http://maps.google.com/maps?t=k&q=21.39639,72.178144&ie=UTF8&ll=21.394652,72.178733&spn=0.014924,0.016587&z=16