Hunter e36 • Boating Safety
4.6
As  always,  you  can  contact  the  Red  Cross  to  obtain 
information  for  training  in  CPR  or  emergency  response 
care.
4.2.7    How  to  Minimize  the Accumulation  of  Carbon 
Monoxide
Practice  good  inspection  and  maintenance  habits.  Be 
certain hull exhaust outlets are not blocked or restricted 
in any way.
Be  alert  for  exhaust  gasses  from  other  boats.   Always 
provide  adequate  ventilation  when  weather  enclosures 
are in place and engines or generator is running.
Do not run with a high bow angle. Use trim tabs or redis-
tribute the load to maintain a low bow angle. Orient your 
boat to maximize the dispersion of CO.
We cannot identify or describe every possible variable or 
combination  of  variables,  you  must  continually  observe 
passengers for symptoms or Carbon Monoxide intoxica-
tion  and  be  aware  of  the  many  possibilities  of  Carbon 
Monoxide accumulation. For instance, poorly maintained 
hoses and hose connections on the generator or engine 
exhaust system(s) can permit Carbon Monoxide to escape 
into the interior of your boat. Therefore, the exhaust sys-
tem  must  be  periodically  examined  and  maintained  in 
order to ensure its integrity. Moreover, all accommodation 
spaces constantly require proper ventilation.
4.2.8  Preventative Maintenance
Frequent  inspections  and  proper  maintenance  of  the 
engine,  and  exhaust  system,  as  well  as,  other  various 
areas of your boat are critical in preventing the accumula-
tion of Carbon Monoxide. It is the owner’s responsibility 
to make sure the entire boat is inspected and maintained 
against CO.
The exhaust systems of your engines and generator are 
under  constant  attack  from  salt  water,  gasses,  vibra-
tion,  and  normal  wear.    Inspect  every  exhaust  system 
component often.    Start  with  a  visual  inspection.  Check 
each joint for discoloration, carbon buildup, stains, water 
leaks, or other signs of damage.  Inspect all metal parts 
for  corrosion,  discoloration,  or  flaking.  Check  that  all 
hose  clamps  are  in  good  condition  and  properly  tight-
ened. Carefully inspect all exhaust and cooling hoses for 
signs of wear, dry rot, cracking, discoloration, chafing, or 
swelling. If any of these conditions exist, have the entire 
system inspected and corrected by a qualified technician 
• before starting the engines or generator.  
Next,  start  each  engine  and  generator  one  at  a  time.  
Follow  the  full  run  of  the  exhaust  system,  listening and 
looking  for  leaks.  While  doing  this,  make  sure  there  is 
adequate ventilation and that your CO detector is on.
Other  items  to  inspect  are  as  follows:  If  your  boat  has 
access  panels,  check  that  the  access  panels  around 
the  engine  and  exhaust  are  in  place  and  fit  snugly  to 
minimize the opportunity for CO to enter the cabin.  There 
should be no large  openings  where CO could  enter the 
cabin.    Ensure  that  all  ventilation  systems  are  in  good 
working order and are not blocked or punctured. Check 
all sink drains to assure that they have a good water trap 
to prevent CO from coming in from the outside.
Finally, because poorly running engines produce exces-
sive  CO,  make  sure  engines  and  generators  are  tuned 
up.  They  should  run  smoothly  and  not  produce  black 
smoke. The spark plugs (gas engines) and ignition sys-
tems should be maintained regularly, and the fuel system 
and air filters should be in good order.
4.2.9  Carbon Monoxide Detectors
If  you  carefully  avoid  potential  CO  accumulation  and 
maintain  your  systems  properly,  you  have  made  great 
strides  towards  protecting  yourself  and  others  from  the 
dangers of Carbon Monoxide. We have  assisted  you  in 
your endeavor  by  providing  CO  detectors  in  each  living 
area aboard your boat.  We use only those CO detectors 
that  are  UL  approved  for  marine  use.  RV  and  residen-
tial models  won’t  withstand  the  elements of  the boating 
environment.  Most  CO  detectors  require  specific  main-
tenance  procedures  to  remain  accurate  and  functional.  
Follow  the  manufacturer’s  instructions  for  the  use  and 
maintenance of the CO detectors.
it's strong recommended that you change CO and Smoke 
alarm  batteries  when  changing  the  clocks  for  Daylight-
Saving Time.  Replace  Smoke Alarms  every  10  years 
and  replace  Carbon  Monoxide  (CO)  alarm  every  5 
years  since  the  sensors  in  these  devices  can  degrade 
because  of  environmental  contamination  and  from  age. 
In  addition  to  replacing  batteries  in  smoke  alarms  at 
least once every year. Always make sure the followings:
Smoke/CO  alarms  should  be  tested  month-
ly  to  make  sure  they  are  working  in  your  boat.
Batteries  should  be  changed  once  a  year,  when-
changing  the  time  on  clocks  of  your  boat.
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