South Port Marine
Resort marina · Casco Bay
146 Harbor Dr, Portland, Maine
Overview
South Port Marine is a resort marina in Portland, Maine, with wet slips for vessels up to 100 feet. Positioned on Casco Bay with access to Ocean, Bay, South Port Marine serves boaters working Portland to Boothbay and the broader Portland cruising area. The marina is configured for long-stay liveaboards, snowbird transients, and seasonal monthly tenants, with shore power, fresh water, and dockmaster support on site.
Casco Bay's 200+ islands make Portland the launch point for Maine's island cruising grounds.
Location & waterway access
Waterway
Casco Bay
Access
Ocean, Bay
Typical water depth
20–35 ft MLW
Hurricane protection
Standard exposure
Dockage options
Includes wet slips, transient and monthly dockage, and liveaboard-approved slips, with yacht dockage for larger vessels.
Boat compatibility
Maximum LOA accommodated: 100 ft. Confirm beam, draft, and air clearance when reserving.
Amenities
- Fuel Dock
- Pump-Out
- Shore Power
- Wi-Fi
- Showers & Laundry
- Ship's Store
- Restaurant
- Boat Ramp
- Travel Lift
Shore power & utilities
Transient, monthly & liveaboard
Transient docking
✓ Available
Overnight and weekly slips for cruising boaters.
Monthly slips
✓ Available
Monthly dockage typically $18 – $40 / ft / month (seasonal).
Liveaboard slips
✓ Available
Year-round liveaboard with marina approval.
Pricing guidance
- Monthly slip estimate
- $18 – $40 / ft / month (seasonal)
- Transient estimate
- $18 – $40 (transient nightly rates vary by season)
- Yacht dockage
- Yacht dockage for 80–100+ ft typically priced at the upper end of $18 – $40 / ft / month (seasonal); concierge rates available.
- Seasonality
- Peak June–September; haul-out by mid-October.
Pricing may vary by season, boat length, and electric metering. Contact marina for exact availability and pricing.
See the full wet slip pricing guide, monthly slip costs, and transient slip pricing.
Local boating context
Nearby boating destinations
- • Peaks Island
- • Chebeague Island
- • Boothbay
Popular cruising routes
- • Portland to Boothbay
- • Casco Bay island loop
- • Downeast to Penobscot Bay
Nearby fuel stops
- • DiMillo's fuel
- • South Port Marine fuel
Seasonality
Peak June–September; haul-out by mid-October.