2026 Harris Grand Mariner 250

The 2026 Harris Grand Mariner 250 is a 25-foot aluminum pontoon built on Harris's multi-tube platform with RPM Technology for stable, efficient performance. The raised helm provides a driver-focused layout with integrated digital display and intuitive controls.

The interior combines plush seating with high-quality materials and expansive storage throughout. The open layout supports flexible use of the onboard space, accommodating socializing, entertaining, or relaxation with the 8.5-foot beam providing generous beam for a pontoon of this length.

Power comes from a single 350-horsepower gasoline engine. The boat's construction emphasizes structural integrity and careful material selection consistent with Harris's build standards.