As an agent for the Department of Environmental Protection, the Tax Collector is responsible for providing the necessary service and record keeping procedures used in processing vessel titles and registrations. All motorized vessels, commercial and private, must be registered, titled and issued a decal before they can be used in Florida waters. The decal must be affixed to the port side of the boat. Vessel registrations are renewed on the owners birthday and will expire on this day the following year. Vessel registration fees are based on the length of the boat.