Why do Boats Catch on Fire

Bulbash

Petty Officer 1st Class
Joined
May 22, 2012
Messages
332
Yesterday went out on lake Simcoe. Seen two boats catch on fire. Ended up giving my fire extingusher to help two guys on the seadoo boat, and had to tow them back to marina... Just curious why does it happen? Gas / oil leak? Not running the blower? Just wanna make sure it does not happen to me...
 

Grub54891

Admiral
Joined
Jun 17, 2012
Messages
6,238
Re: Why do Boats Cath on Fire

Re: Why do Boats Cath on Fire

Leaking fuel lines,bad repairs,not enogh regular maintiance/checking things over,inoperative blower,or not used.Plenty of reasons,but just looking em over before leaving the driveway helps alot.
Grub
 
Joined
Jun 17, 2012
Messages
940
Re: Why do Boats Cath on Fire

Re: Why do Boats Cath on Fire

We are used to using modern car engines that work (mostly) without problem and rarely do we lift the hood to check it out. Many people have never driven a car with a carburettor - never give a thought to fuel leaks :eek: then they get in an older boat and never lift the engine cover to see what's going on!
My advice is to keep the engine clean; check it before & after every use, and immediately trace the source of any fluid leak.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Why do Boats Cath on Fire

Re: Why do Boats Cath on Fire

Using non-marine specific (auto-based) fuel and ignition system parts is also a good way to start a fire. Installing electric fuel pumps to replace a mechanical pump and not incorporating an oil pressure cut-off switch is also a good way to burn down a boat.
 

gm280

Supreme Mariner
Joined
Jun 26, 2011
Messages
14,605
Re: Why do Boats Cath on Fire

Re: Why do Boats Cath on Fire

Apathy, laziness and generally "it worked okay last time I used it" syndrome... And we all are guilty of such at some time. But regular maintenance and proper part usage can stop many firers. Just remember, there is no place to go when your boat is on fire in the middle of the water… Make-shift wiring and so many shoddy work habits also contribute to boating fires… It always amazes me how some folks live so long when you see how they THINK they repaired things… As stated so many time; Common sense isn’t so common these days…
 

Volphin

Lieutenant
Joined
Jun 5, 2011
Messages
1,405
Re: Why do Boats Catch on Fire

Boats catch on fire as a signal beacon to responsible boaters to steer clear of the morons. (Sorry, couldn't help it! LOL)
 

500dollar744ti

Senior Chief Petty Officer
Joined
Jul 23, 2012
Messages
691
Re: Why do Boats Catch on Fire

Usually the same reason cars catch fire, lack of maintenance, blatant disregard for obvious problems, and fuel leaks.

There are the few instances where fires occur and you have no control over preventing them, that's why you have a big huge fire extinguisher.

You would be amazed how many people are operating boats without a flame arrestor or are ignoring fuel leaks.

Example: Boat owner leaves a gas pump after refueling and engine stalls soon after with a strong gasoline smell present.

-Owner A decides the best course of action is to keep cranking the engine without the blower running. Then after the engine doesn't start and the fuel stench increases, he continues to crank over until the starter he got from an auto parts store makes a spark and ignites all the fuel vapor causing an explosion.

-Owner B, who only uses marine parts, decides the best course of action is to run the blower to relieve fuel vapors from the engine compartment. Once the fuel smell has dissipated he discovers the fuel feed hose to the carburetor has cracked and is leaking. To prevent any source of ignition, Owner B turns off main battery power to be safe and decides he cannot safely repair the problem on the water. He calls a buddy for a tow and brings the boat home to make proper repairs.

That's really how fires start, it's not rocket science.
 

Lou C

Supreme Mariner
Joined
Nov 10, 2002
Messages
13,251
Re: Why do Boats Catch on Fire

I've seen some really bad butcher jobs esp on I/O boats because people think that they can substitute car stuff for the marine stuff. Bad wiring, positive cables from the battery up against a hot exhaust manifold, cracked rubber fuel lines, etc.
Having said all that, its also a good idea to install a fume detector, they are not expensive and are easy to install. It is not in place of sniffing before you start but rather to alert you if there is a leak developing when you are underway.
 
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