WHAT ARE THE MARKING REQUIREMENTS FOR THE OFFICIAL NUMBER, NAME AND HAILING PORT?
The official number must be marked in block style Arabic numerals, preceded by “NO”, at least three inches in height on some clearly visible interior structural part of the vessel’s hull. It must be permanently affixed, making alteration, removal or replacement obvious and cause scarring or damage to the surrounding area. The name and hailing port must be marked adjacent to another on some clearly visible exterior portion of the vessel’s hull for a recreational endorsement. On a commercial vessel, the vessel name must be marked on the port and starboard bow and the name and hailing port must be also be marked on the stern of the vessel. The markings must be made in some durable fashion; must at least four inches in height; must be clearly legible letters of the Latin or Arabic alphabet or Roman numerals. The hailing port must include both a US city and state, territory, or possession. The state may be abbreviated.
