I tested the Margaritavich in familiar waters off Palm Beach, Florida, where the strong current of the Gulf Stream almost brushes the sea buoy. The seas were little more than 4 feet, but they were short, steep and irritating. I set the 660 hp Cummins QSM11s at 1600 rpm, and the Margaritavich handled the slop with aplomb in all directions at about 20 knots. I was able to increase speed comfortably in a beam sea and down sea, and I measured a top speed of 33.6 knots at 2250 rpm. The sound levels I recorded were a bit high for a boat of this type, and Rybovich confirmed it is in the process of addressing the issue on our test boat and the subsequent yachts that will follow.