Cruise Casco Bay to House Island and step inside Fort Scammel — a rare, privately accessed 19th-century granite fort. This two-hour boat-and-island tour mixes coastal scenery, lighthouse views, and hands-on history.
More ways to explore the area's outdoor wonders
The boat slips away from Portland’s Old Port and the city’s brick facades fall astern. Salt air pushes at you; gulls wheel and the hull cuts a clean channel across Casco Bay. In less than half an hour the shore gives way to low stone walls and the ruined silhouette of Fort Scammel on House Island — a compact, private place where history still feels tactile.
Difficulty
moderate
Duration
2 hours
Fitness Level
Moderate: able to walk on uneven terrain, climb steps and stand for portions of the cruise.
Wildlife
History
Fort Scammel was constructed in the early 1800s and updated through the 19th century; it served as part of Portland Harbor’s layered coastal defenses and once saw active combat.
Conservation
Casco Bay’s islands are sensitive to trampling and nesting birds; stick to designated paths, pack out trash and follow guide instructions to minimize impact.
Reserve your spot on the Private Island Fort Tour in Casco Bay: Boat Cruise & Island Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring layered windproof clothing
Casco Bay can be breezy and colder on the water even on warm days; a windproof outer layer keeps spray and wind off.
Wear solid footwear
Expect uneven stone, stairs and wet surfaces on the island — closed-toe shoes with good grip are recommended.
Pack seasickness remedies
If you’re prone to motion sickness, take medication before boarding and sit mid-boat where motion is least pronounced.
Plan restroom stops in town
Restrooms are available at the departure location but not on the boat, so use facilities before boarding.
Windproof jacket
Blocks wind and spray during the crossing and on exposed island ledges.
spring
Sturdy closed-toe shoes
Protects feet and provides grip on wet, uneven masonry and rocky shorelines.
Motion-sickness medication
Useful for those sensitive to boat movement; take before boarding if needed.
Sun protection (hat, sunglasses, sunscreen)
Reflected sun off water increases UV exposure during the cruise.
summer