United Marine Underwriters Boat Insurance — US Coast Guard Auxiliary
- United Marine Underwriters Boat Insurance
- United States Water Patrol
- United Yacht Sales
- Universal and Custom Boat Covers
- Universal Viagra
- Universal Yachting
- University Dental Group
- University of Florida Sailing Club
- Uno Mas Sportfishing Charters
- Unrully Charter Fishing
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- Upper Cape Realty Corp.
- Upper Deck Boatshop
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- US Boat Search
- US Boat Storage.com
- US Coast Guard
- US Coast Guard Approved First Aid Kits
- US Coast Guard Aux 12-01
- US Coast Guard Auxiliary