CHAPTER 14 Ecology in the engine bay
Rag around filler to catch spillage
Absorbent pillow in bilge Drip tray
Fuelling up When fuelling up, be careful about allowing oil spills on the rationale that they can readily be neutralised by a quick shake of the detergent bottle. Some detergents do more harm than the oil. A supply of soak pads or baby’s nappies (diapers) laid around the filler hole is the best answer. Power craft taking on larger quantities of fuel at high pumping rates should consider fitting ‘splash stops’ in the line. Detergents There seems little doubt at the time of writing (2006) that regulation may come into force concerning the use of non-bio detergents. In any event, there is no question about the fact that biological chemicals are injurious to the marine environment. Fortunately, ecologically sound detergents are available, and should be used on the water.
Holding tanks
In an ideal word, all sailors would use holding tanks anywhere near the coast, only pumping heads straight out when far at sea. For this to happen, plentiful convenient pump-out facilities must be supplied. Sadly, they are not, so unless navigating in an area governed by clear regulation to the contrary such as parts of the Eastern Mediterranean, we are left to our own consciences and certain guidelines.
Basic Principle: • Do not discharge a sea toilet where it will affect water quality or harm the amenity value of the local waters.
Good practice suggestions: • Use shore facilities wherever possible – tell the harbour authority or marina operator if these are inadequate.
• Do not discharge a sea toilet into non tidal, or weak tidal waters in an area where local sewage is adequately treated before sea dispersal.
• Do not discharge into crowded anchorages, near amenity beaches or close to commercial shell-fish beds.
• If you regularly use your boat in such inshore areas, fit a holding tank.
• Do not empty a chemical toilet into the sea. Discharge of holding tanks
It is lawful to do this via a proper shorebased pump-out facility, or directly when more than three miles offshore.
MANUAL OF SEAMANSHIP | 137
Manners and customs of the sea
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