2026 Harris Grand Mariner 250

The 2026 Harris Grand Mariner 250 is a 25-foot aluminum pontoon powered by a single Mercury 425-horsepower gasoline engine. The boat features a redesigned profile with sweeping lines and a sloped silhouette, paired with soft-touch vinyl seating and upholstered furniture throughout.

The helm integrates an all-electric tower and C-Zone system for comprehensive control of the boat's electrical systems and onboard lighting. The open layout provides space for relaxation and entertainment, with the power plant delivering sufficient thrust for watersports activities.

Construction emphasizes comfort with high-end finishes and contemporary styling. The 8.5-foot beam accommodates the pontoon's entertaining-focused design.