With her striking profile and upscale accommodations, the Sea Ray 310 Sundancer ranks among the top selling midsize express boats ever produced. The 310 is a well-crafted boat—better finished than previous Sea Ray models with first-rate appliances and quality hardware and furnishings. When the 310 was introduced in 1998, she came with an unusual floorplan that required those using the forward kidney-shaped berth to climb over the circular dinette seat. Sea Ray dumped that plan in 1999, replacing it with a more conventional layout with an angled double berth forward and a conventional dinette with facing seats. In both configurations, a roomy mid-cabin offers true seclusion thanks to a real door instead of a curtain. The 310’s large cockpit includes a double-wide companion seat next to the helm seat (an unusual configuration), U-shaped rear seating, and a wet bar with removable cooler. For engine access, the entire bridge deck rises electrically at the push of a button. Offered with inboard or stern drive power, MerCruiser 300hp V-drive inboards cruise the 310 Sundancer at 20–22 knots (high 20s top). Twin 260hp MerCruiser I/Os cruise in the mid 20s (34–36 knots top).