The following federally documented vessels may not be regarded as using Maryland waters for pleasure: Commercially registered vessels that are: For hire with a licensed captain on board; Used exclusively by a marine school as a training vessel; Used principally in the commercial fisheries of this State; or Used exclusively to test marine equipment; A vessel used for public service and owned by the United States government, another state, or any political subdivision; A federally documented vessel in Maryland for storage, repairs, or resale, and not in use; and A federally documented yacht on cruise through Maryland waters, visiting or in a race in Maryland, and which is determined to be used principally in another state.