Hunter e36 • Boating Safety
4.12
immediate concern. Hypothermia means a person’s body 
loses heat to the water faster than the body can replace 
it.  If not rescued, the person will become exhausted and 
likely drown.  In general, the colder the water, the shorter 
the  time  for  survival.  PFDs  will  increase  survival  time 
because they provide insulation. 
Water 
Temperature
Exhaustion orUncon-
sciousness
Expected Time of 
Survival
32.5 Under 15 min Under 15 to 45 min
32.5 – 40 15 – 30 min 30 – 90 min
40 – 50 30 – 60 min 1 – 3 hrs
50 – 60 1 – 2 hrs 2 – 4 hrs
60 – 70 2 – 3 hrs 2 – 4 hrs
70 – 80 3 – 12 hrs 3 hrs – indefinite
Over 80 Indefinite Indefinite
4.4 Fire
A fire aboard your boat is serious.  Explosion is pos-
sible.  Respond immediately.  Develop a fire response 
plan.
4.4.1  Fire
Every  boater  should  develop  a  fire  response  plan  to 
determine  what  kind  of  fire  (fuel,  electrical,  etc.)  might 
break out, where it might break out, and the best way to 
react. 
Important:  Everyone on board should know where a fire extin-
guisher is and how to operate it.
Any fire requires stopping the engines immediately.
If the fire is in the engine compartment, shut off the bilge 
blower immediately.  Do not open the hatch to the engine 
compartment.  The fire will flare up as the fresh air supply 
increases suddenly.
Keep the fire downwind if possible.  If the fire is aft, head 
into the wind.
Have all persons on board put on their personal flotation 
devices (PFDs).
If you can get at the fire, aim the fire extinguisher at the 
base of the flames and use a sweeping action to put out 
the fire.
If the fire gets out of control, make a distress signal and 
call for help on the radio.
Deciding whether to stay with the boat or abandon ship 
will be difficult.  If the decision is to abandon ship, all per-
sons on board should jump overboard and swim a safe 
distance away from the burning boat.
4.5  Distress Signals
4.5.1  Mayday
If  you  have  a  VHF  radio,  heed  storm  warnings  and 
answer    any  distress  calls  from  other boats.    The  word 
“MAYDAY” spoken three times is the international signal 
of  distress.    Monitor  marine  radio  channel  16,  which  is 
reserved for  emergency  and  safety  messages. You  can 
also use this channel to contact the Coast Guard or other 
boaters if you have trouble.
Never  send  a  “MAYDAY”  message  unless  there  is  a  serious 
emergency and you are in need of immediately assistance.
4.5.2  Visual Distress Signals
The  U.S.  Coast  Guard  requires  that  all  boats  operat-
ing  on  U.S.  Coastal  Waters  have  visual  distress  signal 
equipment on board.  In general, coastal waters include 
all waters except rivers, streams, and inland lakes.  The 
Great Lakes are considered coastal waters, as is a river 
mouth  more  than  two  miles  wide.    Boats  owned  in  the 
United States and operating on the high seas must also 
carry visual distress signal equipment.
Visual  distress  equipment  must  be  in  serviceable  con-
dition  and  stowed  in  a  readily  accessible  location.  
Equipment having a date showing useful service life must 
be within the specified usage date shown.  Both pyrotech-
nic and non-pyrotechnic equipment must be U.S. Coast 
Guard approved.
Pyrotechnic  U.S.  Coast  Guard  approved  visual  distress