For the most recent vessel documentation information, forms and instructions visit: http://www.uscg.mil/hq/cg5/nvdc/

If the vessel has been issued a number, completing a renewal and sending the required $84.00, Reading the 'fine print': Vessel owners are required to renew Certificates of Documentation each year. Failure to renew the endorsement(s) may result in the vessel being removed from documentation. Operation of a vessel with expires endoresements may result in a civil penalty. If the vessel has been lost, sold, abandoned, destroyed, or placed under state numbering, the vessel owner must notify the National Vessel Documentation Center in writing. If the Certificate of Documentation is available, it must be surrendered. If any of the information shown on the Certificate of Documentation, other than the address of the owner, has changed, please contact the National Vessel Documentation Center for advice on how to proceed. The toll free number is 1 800 799-8362. I have delt with Diane Miller, Documentation Officer, who was very helpful.
Fair winds,
Jerry