How do you move a mega yacht? Very carefully.

With four gleaming levels, six cabins, twin 1,800 horsepower diesels, a top speed of 17 knots and a range of 4,300 nautical miles, you could take the 157-foot-long Barchetta anywhere: Greece, the Virgin Islands, Costa Rica. That would be no sweat for your crew of nine. The problem on Thursday was that first curving quarter-mile of road from Christensen Shipyards Ltd. near Marine Park to the company’s launch ramp into the Columbia River.