2026 Harris Grand Mariner 250 – 425HP Mercury Verado V10 This 2026 Harris Grand Mariner 250 is the definition of a luxury performance pontoon. Powered by the Mercury 425HP Verado V10 with DTS controls and power assist steering, this boat delivers incredible power, smooth handling, and premium comfort. Finished in Midnight Blue with Platinum Silver accents and Black Edition fencing, this Grand Mariner features the SLEC floorplan with an entertainment center and upgraded Luxe Tungsten furniture with light blue accents. Built on the performance 3-tube 27” chassis with lifting strakes and full-length keel, this pontoon provides exceptional ride quality and stability even at high speeds. Luxury features include the Ion power tower with double bimini, JL Platinum sound system, dual Simrad NSX9 displays, RGB interior and exterior lighting, stainless ski tow bar, and a full entertainment setup with refrigerator and additional seating options. Other highlights include: • JL Platinum audio with tower speakers • Simrad NSX9 dual display electronics • Power tower with dual bimini • Raised helm with upgraded steering wheel • Stainless ski tow bar • Full slate gray woven teak flooring • Stainless refrigerator with battery system • RGB interior and exterior lighting package • In-floor storage • Pop-up cleats and convenience package • Swim seat aft • Removable windscreen • Additional fenders and accessories