About Safe Harbor Great Island Boat Yard
Great Island Boat Yard & Marina is a welcoming, family-run operation located just 40 minutes north of Portland in a naturally protected, beautiful cove. Our modern boat yard facilities include a custom post and beam building housing offices, a ship’s store, and guest amenities. While staying in our marina, you gain access to our expert mechanical and electrical service techs and riggers, as well as our on-site cafe and live music events. Need to provision for coastal cruising or an ocean passage? Pre-order with Craft Kitchen & Provisions!

Installations
COORDINATES
43.82995 N, -69.91537 E
Port Information
Téléphone
Berth Sizes
10-20m, 20m+
Profondeur à la marée basse moyenne
2 - 3m
Manœuvrabilité
Fair
Channel Marking
Excellent
Canal VHF
9
Port d'entrée
No
Overseas Visitor Berths
Yes
Amarrages pour catamarans
Yes
Type de quai
Floating
Style Side To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Wed
5AM - 9AM
11 February 2026
- NW 4–7 knots.
- −4 to −1°C
- Mostly fine
Wed
9AM - 1PM
11 February 2026
- NW 5 knots increasing to 12 knots. Gusts up to 17 knots.
- Increasing from −3 to 1°C
- S 0.4m at 4s period
- UV Index: 1 - Low
- Mostly fine
Wed
1PM - 5PM
11 February 2026
- NW 10–14 knots. Gusts up to 18 knots.
- −2 to 2°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy