2026 Harris Grand Mariner 250 SLDH

The 2026 Harris Grand Mariner 250 SLDH is a 25-foot pontoon powered by a single Mercury 350L Verado engine. The boat features a fully redesigned profile with sweeping lines and a sloped silhouette, paired with an all-electric tower for refined aesthetics and control.

The helm is equipped with C-Zone digital management, giving the operator command over both the electrical system and onboard lighting. The interior combines soft-touch vinyl surfaces with comfortable furnishings throughout, creating a social layout suited to family outings and watersports.

The Mercury Verado powerplant delivers the thrust needed for towing and active water recreation, while the modern tower and integrated electronics provide both function and a contemporary appearance on the water.