2026 Harris Grand Mariner 250

The 2026 Harris Grand Mariner 250 is a 27-foot tritoon powered by a single Mercury 425 V-10 Verado outboard with power-assisted steering, digital throttle and shift, and automatic trim. Built on three .090-gauge pontoons with a reinforced nose cone, the boat features a 50-gallon fuel tank, under-deck aluminum plating, and lifting strakes for performance. The hull incorporates a fiberglass bow and extended rear deck layout on a modern Ion arch tower design.

The single-lounger layout is built around a spacious experience. The helm features UltraLux high-back seating in a raised position and dual Simrad 9-inch screens. The interior includes gray wood woven teak flooring, wireless phone charging, lighted cup holders, and LED RGB lighting throughout the arch, deck, and underwater sections. A JL Platinum sound system with eight lighted speakers, amp, and subwoofer delivers audio, supplemented by tower speakers with additional amplification.

Equipment includes a full EZ Clip mooring cover, stainless steel rub rail, dual batteries with switch and charger, four large fenders with mounts, a stainless steel ski tow bar, and a large, extra-wide swim ladder with fold-down seat. Docking lights with LED flood and spot lights are flush-mounted in the pods. Convenience items encompass a portable cup holder, upgraded steering wheel, four quick-release fender systems, flip-up cleats, and kick plates, plus ski floor storage.

The tandem-axle aluminum trailer features mag wheels, disc brakes, a swing tongue, heavy-duty jack stand, and poly bunk covers for transport and storage.