2026 Harris Grand Mariner 250 SLDH

The 2026 Harris Grand Mariner 250 SLDH is a 25-foot pontoon powered by a Mercury 350L Verado gasoline engine. The boat features a redesigned hull with swept lines and a sloped profile, paired with an all-electric tower and C-Zone helm system for intuitive control of both propulsion and onboard electrical management.

Accommodations emphasize comfort with soft-touch vinyl seating and upholstered furniture throughout. The helm station provides full command of engine and systems, while the open layout is suited to family outings and water sports. An integrated lighting system allows customization of the boat's night appearance.

The electric tower and advanced helm technology give the Grand Mariner modern conveniences alongside the Mercury Verado's power delivery for towing and acceleration.