MARLOW-HUNTER MH31, Operator'S Manual

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Boating Safety
4.6
Know the Dangers!
Know the Dangers!
Exercize caution when swimming near or under the back deck or swim platform.
Carbon monoxide from exhaust pipes of inboard engines, outboard engines and generators
build up inside and outside the boat in areas near exhaust vents.
STAY AWAY from these exhaust vent areas and DO NOT swim in
these areas when the motor or generator is operating. On calm days, wait at least 15 minutes
after the motor or generator has been shut off before entering these areas. NEVER enter an
enclosed area under a swim platform where exhaust is vented, not even for a second.
Blockage of exhaust outlets can cause carbon monoxide to accumulate in the cabin and cockpit
area - even when hatches, windows, portholes, and doors are closed.
Exhaust from another vessel that is docked, beached, or anchored alongside your boat can emit
poisonous carbon monoxide gas into the cabin and cockpit of your boat. Even with properly vent-
ed exhaust, your boat should be a minimum of 20 feet from the nearest boat that is running a
generator or engine.
Slow speeds or idling in the water can cause carbon monoxide gas to accumulate in the cabin,
cockpit, bridge, and aft deck, even in an open area. A tailwind (force of wind entering from aft
section of the motorboat) can also increase accumulation.
The “station wagon effect,” or backdrafting can cause carbon monoxide to accumulate inside the
cabin, cockpit, and bridge when operating the boat at a high bow angle, with improper or heavy
loading or if there is an opening which draws in exhaust.
This effect can also cause carbon monoxide to accumulate inside the cabin, cockpit, aft deck,
and bridge when protective coverings are used and the boat is underway.
Teak surfing, dragging and water-skiing within 20 feet of a moving watercraft can be fatal.
It only takes one or two breaths of the air in this “death chamber” to be fatal.