I was under the impression a "Float Plan" (when & where you plan to navigate) is voluntary in coastal and tidal waters.<br /><br />From the memmory of my boating course I knew float plans are required in many shipping channels and within specific proximity of military ports.<br /><br />However, I was in a discussion with someone who insisted a Float Plan is mandatory on some coastal waterways.<br /><br />Can some of the seasoned mariners offer helpful info?