Welcome to Gillan Marine
Established in 1978, Gillan Marine is a full service marina located in New Hampshire's Lakes Region on beautiful Lake Winnipesaukee. Offering quality pre-owned boats, used boats, new boats, slips and storage, boat repairs and everything else you may need for your boat.
Come visit us
396 Main Street, Alton Bay, NH 03810
World Class Service
Gillan Marine's award winning Service Department has a full staff of mechanical technicians available for retail or warranty repairs. We service all brands of boats powered by MerCruiser, Mercury, Suzuki, Volvo Penta and Indmar engines.
Hours: 8AM - 6PM Monday - Saturday
We have Seasonal slips available
for boats up to 35'.
• A prime Location on the Big Lake
• Short Term slip leasing available
• We also have slips on the other side of the bridge in the River Lake Yacht Club for smaller boats