2026 Harris Grand Mariner 250

The 2026 Harris Grand Mariner 250 is a 25-foot pontoon powered by a single 425-horsepower Mercury engine. The redesigned hull features sweeping lines and a sloped silhouette finished in aluminum, with an 8.5-foot beam built for stability and comfort on the water.

The helm incorporates an all-electric tower and C-Zone system for intuitive control of both the boat's power and lighting functions. The deck layout combines soft-touch vinyl upholstery with quality furnishings throughout, creating a comfortable environment for full days on the water. The open floor plan provides ample space for relaxation and entertaining, making the boat well-suited for watersports and social outings.

Mercury power at this horsepower level delivers the performance needed for watersports activity, with smooth handling through various water conditions. The modern design integrates high-end finishes and current technology across the boat's systems and layout.