2026 Harris Grand Mariner 250

The Harris Grand Mariner 250 is a 25-foot aluminum pontoon powered by a single Mercury 425-horsepower V10 Verado engine. Built on a heavy-duty triple-tube chassis with 27-inch pontoons, it delivers high-speed capability paired with structural stability for rough water performance. The engine features Digital Throttle & Shift controls and Power Assist Steering for responsive handling.

The deck layout centers on a Single Rear-Facing Lounger with Dual Helm Seats finished in Chestnut Brown upholstery, complemented by full Chestnut Teak vinyl flooring. Twin Black Bimini tops provide complete shade coverage across the deck. An Ion Power Lift Tower with integrated speakers lowers electronically for bridge clearance. The stern includes an Aft Swim Seat, safety railing, and docking fenders. A heavy-duty stainless steel ski tow bar accommodates water sports towing.

The helm features a touchscreen display with GPS integration, digital lighting controls via C-Zone switching, a steering wheel upgrade, removable windscreen, and wide-angle rearview mirror. Ultra luxury high-back captain and co-captain chairs provide ergonomic support at both helm positions. A flip-up chaise table serves the social zones forward.

The exterior is finished in Black Sapphire with Black Matte accents and a Black Edition powder-coated fence, creating a cohesive stealth aesthetic throughout the boat.