2026 Harris Grand Mariner 250

The 2026 Harris Grand Mariner 250 is a 25-foot pontoon built on triple 27-inch tubes for stability and performance. Finished in Ceramic White with White Diamond accents and a black powder-coated fence, the boat features a power tower with black bimini top and forward-facing bimini for shade. A single Mercury 425L V10 DTS engine with joystick control delivers power and responsive handling, supported by saltwater anodes for corrosion protection. The pontoon includes a 1,000 lb rated ski tow bar for watersports.

The helm is equipped with dual Simrad NSX9 touchscreen displays and Mercury SmartCraft Connect integration. A JL Audio Platinum stereo system with tower-mounted speakers provides entertainment, while a 120V battery onshore charger supports the electrical systems. The cabin features an SLEC layout centered around an entertainment area with built-in sink and refrigerator. Seating includes an Ultra Lux raised helm chair, luxury Tungsten upholstery with Charcoal accents, and a chaise-end flip-up table. An ottoman with integrated cooler and separate Harris cooler provide storage and beverage service.

Deck amenities include a Lillipad Easy Step boarding ladder, safety railing, midship mooring eyes, and an American flag. The Moonlit Shoreline flooring completes the interior finish. This is a new 2026 model.