The Federal Communications Commission (FCC) has granted a total of 51 licenses and call signs in the category of Ship Compulsory Equipped license in Portland, 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 |
|---|---|---|
| KJCP | Atlantic Pelagic Seafood, LLC | 2005-09-27 |
| WBT2391 | CASCO BAY ISLAND TRANSIT DISTRICT | 2018-03-20 |
| WCK3223 | CASCOBAY ISLAND TRANSIT DISTRICT | 2014-05-29 |
| WCZ3474 | CASCO BAY ISLAND TRANSIT DISTRICT | 2019-03-20 |
| WDB9532 | New England Trawlers, Inc. | 2014-07-11 |
| WDC2114 | TERESA MARIE IV INC | 2014-08-20 |
| WDC4555 | Coast Watch & Guiding Light Navigation Co. Inc. | 2015-01-17 |
| WDC6238 | HDH MARINE LLC | 2015-04-29 |
| WDC7398 | Mayo, Douglas K | 2005-10-08 |
| WDC7823 | Teresa Marie III Inc. | 2015-09-16 |
| WDC8015 | F.A.J. LLC | 2015-09-25 |
| WDC9333 | Portland Schooner Company | 2006-03-21 |
| | ||
| WDC9334 | Portland Schooner Company | 2006-03-21 |
| WDD8911 | Martin, Thomas | 2017-06-03 |
| WDD9820 | CHIPS, LLC | 2007-10-06 |
| WDE2982 | Martin, Thomas L | 2017-12-15 |
| WDE5791 | Coast Watch & Guiding Light NAV CO INC | 2008-08-05 |
| WDF2485 | McLellan, M. Cameron | 2009-10-20 |
| WDF5678 | BAY TAXI SERVICE INC | 2010-09-09 |
| WDF5731 | F/V Isabella & Ava | 2020-09-11 |
| WDF5858 | F/V Captn Mark | 2020-09-11 |
| WDF5859 | F/V Captn Jake | 2020-09-11 |
| WDG9870 | Casco Bay Island Transit District | 2013-10-18 |
| WDH3075 | sustainable seafoods llc | 2014-01-30 |
| WDH4645 | Blue Water Ventures LLC | 2014-05-09 |
| WDH7764 | Casco Bay Island Transit District | 2014-12-24 |
| WDH9454 | New England Trawlers, Inc. | 2015-04-22 |
| WDI2126 | Custom House Mariner Fleet DBA Casablanca Cruises | 2015-05-28 |
| WDI7566 | Maine Towing and Salvage, LLC | 2016-04-26 |
| WDI8094 | Bay Ferries Ltd | 2016-05-19 |
| WDI8835 | Sustainable Seafood LLC | 2016-06-22 |
| WDI8948 | Portland Schooner Company | 2016-06-28 |
| WDI8950 | Portland Schooner Company | 2016-06-28 |
| WDJ5594 | Maine Duck Tours | 2017-05-17 |
| WDJ6219 | Unigear LLC | 2017-06-20 |
| WDJ6497 | Coast Watch & Guiding Light Navigation Co. Inc. | 2017-07-06 |
| WDJ8419 | Martin, Thomas | 2017-12-13 |
| WDJ8486 | Overcurrent Fisheries Inc. | 2017-12-20 |
| WDK3089 | Blue Water Ventures, LLC. | 2018-05-31 |
| WDK4354 | Coast Watch & Guiding Light Navigation Co. Inc. | 2018-08-11 |
| WDK4794 | Ocean Passages, LLC | 2018-09-15 |
| WDK7760 | Portland Schooner Company | 2019-04-16 |
| WDK8003 | Casco Bay Lobster Co., Inc. | 2019-04-27 |
| WDK8703 | Four Guys Water Taxi LLC | 2019-05-31 |
| WDL5167 | Rangeley Holdings | 2020-03-24 |
| WDL5208 | Cap'n Fish Holdings LLC | 2020-03-26 |
| WDL5209 | Cap'n Fish Holdings, LLC | 2020-03-26 |
| WDM5432 | City of portland | 2021-08-21 |
| WDM8429 | Rippleffect | 2022-03-09 |
| WDN3937 | Denslow, William E | 2022-09-07 |
| WDN7814 | Rippleffect | 2023-05-03 |
