Boat Maintenance by Gretchen 11 Marshfield Ave, Humarock, MA, 02047781-545-2845, 617-797-6344 False Or Inaccurate Data? I am the owner (official representative) and I want to improve my business info. This business is permanently closed / This business does not exist / Duplicate Business Listing. I am not the owner and I want to report a issue about wrong data. Other Reason: *Out of businessMoved to new locationWrong business at this locationPhone has been disconnectedDuplicate ListingOther reasons Name: Email: Comment: * Next Name: * Email: * Subject: Message: *