Safe Harbors Great Island is in a league of their own. Both power and sailboat owners with the highest standard come to the Great Island team for top of the line maintanance and service. Great Island handles large projects and single work items with an standard of excellence that is unmatched in New England. I have been a customer for 10 years and cannot say enough about Great Island. All you need to do is look at the boats that make Great Island their homeport to see quality of this yard and their customers. Look no further.