which results in the drainage of any waste water must have all such waste water drain into a holding tank in order that it may be pumped ashore at a marine pump out facility. Any overboard lines from such systems must be either sealed or removed. Your Float Plan Before venturing out on any voyage aboard your vessel be certain to write down a float plan and leave it with a reliable person who can follow up in the event you don't return on time. Items that should be included in any float plan include: who's on board, where you are going, when will you leave and at what time are you expected to return. The more information you can provide will better improve the likelihood that search units will be able to locate you in the event you break down or need assistance. Should your plans change during your trip, be certain to notify the individual with whom you've filled your float plan. (See sample on page 42) Your Marine Radio and the FCC A marine radio is a wise investment in safety for any recreational boater planning to venture any distance from shore or to any area where immediate rescue is unlikely. Your marine radio will allow you to request marine assistance or towing services, in non-emergency situations, from a variety of commercial services. Distress and mayday calling should be limited to medical emergencies or other situations where the safety of those on board is threatened. Current Federal Communications Commission regulations exempt small recreational boats, operating domestically, from needing to carry a ship station or operator license. Changes in Marine Radio Communications Commercial vessels that are required to be Global Maritime Distress and Safety System (GMDSS) compliant are no longer required to maintain a listening watch on VHF channel 16. 49