Getting back to the surf advisory... we anchored at Pond Bay January 5th and 6th. It was very calm in there on the 5th, almost no surf at all on the beach. At around 3 in the morning on the 6th, we felt wave slap on our swim platform (we have a Nordhavn MY with an extended swim platform) which got worse over time, and we were bouncing a lot. A little after sunrise, I got up and say that the dinghy, cable locked to the swim ladder, had pulled the ladder into the water and was banging against the platform. Thw swell was breaking over the reef at about 5 to 6 feet. Every 4 or 5 waves, our cockpit got drenched from the wave slap, as the wind kept our stern into the swell. It felt dangerous, so we got out. Once we got past the reef, the seas were actually quite calm. We came into Leverick Bay, which was also calm. I now see what the guidebook means about Savannah Bay in a north swell condition...