2026 Harris Grand Mariner 250

The 2026 Harris Grand Mariner 250 is a 25-foot aluminum pontoon powered by a single Mercury 400 hp Verado V10 outboard engine. Built on a robust aluminum frame with an optional third pontoon tube for enhanced stability and smooth handling in varied water conditions, this boat delivers both capability and comfort for cruising and entertaining alike.

The helm features a large Simrad NSX touchscreen display integrated with Digital Throttle & Shift controls and available Joystick Piloting for Outboards system. The spacious layout accommodates up to 14 people and includes plush seating throughout, with a multi-position rear lounger that converts between forward-facing and fully reclined configurations. A powered bimini top, flip-up table, and JL Audio sound system round out the onboard amenities, while generous storage supports extended outings.