2026 Harris Grand Mariner 250

The 2026 Harris Grand Mariner 250 is a 25-foot pontoon built on a heavy-duty triple-tube chassis with 27-inch diameter tubes, powered by a single Mercury 425 HP V10 Verado engine. The setup combines that substantial power with a Performance Level 3 hull configuration featuring lifting strakes and a full-length keel for high-speed stability and tracking. Digital Throttle & Shift and Power Assist Steering come standard, making the boat responsive and smooth to handle.

The deck layout prioritizes both performance and comfort. A fixed Ion Power Lift Tower with integrated speakers lowers electronically for bridge clearance. Dual Black Bimini tops provide complete shade coverage across the deck. The helm features elevated captain and co-captain seats with an unobstructed forward view, a removable windscreen, and a wide-angle rearview mirror. An aft swim seat and social lounging areas include a woodgrain sport table and flip-up chaise table for flexible entertaining.

Interior appointments reflect a luxury approach throughout. The single rear-facing lounger pairs with dual helm seats, all finished in Chestnut Brown upholstery with Onyx accents. Full Chestnut Teak-look vinyl flooring runs the length of the deck. A fully integrated C-Zone lighting system controls interior and exterior RGB lighting from a digital interface. The helm features high-definition touchscreen displays with integrated GPS and upgraded controls. A stainless steel ski tow bar handles professional-grade towing, and stainless steel safety railing secures the aft lounging area during operation.