The Federal Communications Commission (FCC) has granted a total of 15 licenses and call signs in the category of Ship Compulsory Equipped license in Belfast, Maine. Select a call sign from the table below to view its details such as the date of authorization, expiration date, service description, and so forth.
| Call Sign | License Holder Name | Date of Authorization |
|---|---|---|
| WDC8080 | Maineport Towboats, Inc. | 2005-12-13 |
| WDD4563 | McAllister Towing & Transportation Co., Inc. | 2016-08-05 |
| WDD6191 | McAllister Towing & Transportation Co., Inc. | 2007-03-01 |
| WDD7187 | Wanderbird Expeditions | 2007-04-26 |
| WDE3205 | Tug Canyon Corp | 2008-02-05 |
| WDE3797 | Tug Canyon Corp. | 2008-03-21 |
| WDE3798 | Tug Canyon Corp. | 2008-03-21 |
| WDF7655 | Tug Canyon Corp | 2011-04-20 |
| WDG5150 | Canal Towing | 2012-08-28 |
| WDG7391 | Stamford Services Inc. 1209 Orange Street Wilmington, DE. 19801 | 2013-03-20 |
| WDG7405 | Nix's Mate Equipment Trust 48-1 Marshal Wharf Belfast, ME. 04915 | 2013-03-21 |
| WDJ4116 | Maritime Asset Holding LLC | 2017-02-24 |
| WDK8564 | Penobscot Bay Tractor Tug Co | 2019-05-24 |
| WDM5257 | Penobscot Bay Tractor Tug Co | 2021-08-12 |
| WDM9903 | Penobscot Bay Tractor Tug Co. | 2022-05-18 |
