loose exhaust hose sinks 36 tri cab

Stripermann2 · Post by **Stripermann2** » Thu Nov 11, 2010 6:33 pm

summer storm wrote:Sounds like not many people use the strange thing the hose is connected to............................................the seacock??

Speaking hoses...how about them hose clamps. Hoses should always be doubled clamp using SS clamps! Have seen enough boats with rusted clamps just hanging in there...in pieces.

rbcool · Post by **rbcool** » Thu Nov 11, 2010 6:41 pm

alexander38 wrote:Was it a searay? Ron

Nope!!!! It was a $120k mainship

k9th · Post by **k9th** » Thu Nov 11, 2010 7:37 pm

summer storm wrote:Sounds like not many people use the strange thing the hose is connected to............................................the seacock??

Amazing but true! You would think that would be the first thing they do - turn it off.

prowlersfish · Post by **prowlersfish** » Thu Nov 11, 2010 8:02 pm

I have never seen a seacock on a exhaust hose

summer storm · Post by **summer storm** » Thu Nov 11, 2010 9:50 pm

prowlersfish wrote:I have never seen a seacock on a exhaust hose

Might just be bigger boat stuff. The 115 I run has underwater exhaust for running at speed and transon exhaust for slow speed. There are seacocks (more like valves) to shut down the underwater outlets to allow the removal of the molded risers that go to the diverter.

I just assumed that the 36 tri with a more basic underwater system would allow the port to be closed. So now I am wondering, on the tri is the hose just connected to a fitting with hose clamps below the water line?

wowzer52 · Post by **wowzer52** » Sun Nov 14, 2010 1:41 pm

I'm like prowlerfish, I've never seen or heard of a seacock on an exhaust. Flappers I am familiar with, never seen them work very well but have seen them.

alelogman · Post by **alelogman** » Wed Dec 01, 2010 9:14 am

You're not alone, I've also never seen or heard of a seacock on an exhaust. Flappers keep the waters out right??

prowlersfish · Post by **prowlersfish** » Wed Dec 01, 2010 12:12 pm

Flappers are installed on some I/O s and they kind of work till they burn out . Some folks put external flappers on their exhaust use to see them all the time not to often now a days

BTW welcome to the forums

summer storm · Post by **summer storm** » Wed Dec 01, 2010 4:39 pm

Below is a photo of my generator exhaust with a seacock attached. This is not the intake but the exhaust. I have 4 of these onboard, one on each main and 1 on each generator. Yes, the exhaust gases and the raw cooling water discharge through this hose, and is factory installed.

http://picasaweb.google.com/yachtMissyB ... 3926423858

prowlersfish · Post by **prowlersfish** » Wed Dec 01, 2010 5:55 pm

What boat is this on ? . if this is exhaust then it is mis labeled please don't tell me this is a C.G. inspected vessel .

Stripermann2 · Post by **Stripermann2** » Wed Dec 01, 2010 6:47 pm

I haven't seen a set-up like this before. Exhaust through a gate valve...hmmm. See gate valves on waste/discharge hose from tanks below the water line but not exhaust.

See something new every day.

Stripermann2 · Post by **Stripermann2** » Thu Dec 02, 2010 8:56 am

I was intirigued so, after a little research, I discovered that some generators (Fischer Panda) may use a water separator exhaust muffler. It separates the exhaust gasses and discharge water. The water exits through one fitting, with a seacock and the other discharges through another through hull, with just exhaust gasses. This makes for a quieter system.

Maybe Doug will enlighten us.

Thanks.

Paul · Post by **Paul** » Thu Dec 02, 2010 9:38 am

I have a water separator on my gen exhaust. By removing the water from the exhaust gases, it removes the "gurgling" sound normally heard from a wet exhaust. The result is a quiet & consistent exhaust sound. The water discharge from the separator can be located above or below the waterline, however if below the waterline it requires a ball ball or gate valve.

summer storm · Post by **summer storm** » Thu Dec 02, 2010 3:20 pm

Stripermann2 wrote:I was intirigued so, after a little research, I discovered that some generators (Fischer Panda) may use a water separator exhaust muffler. It separates the exhaust gasses and discharge water. The water exits through one fitting, with a seacock and the other discharges through another through hull, with just exhaust gasses. This makes for a quieter system.

Maybe Doug will enlighten us.

Thanks.

You are correct. The newer designs can channel the exhaust either to the underwater opening or to a smaller discharge just above the waterline (with out the water) depending on what the boat is doing. This is to reduce the black streak the generators or main engines make down the side of the yachts while underway. My mains at speed discharge underwater and at rest out the back of the boat. I have valves on all four for good reasons.

As far as the boat I run, it is a 268 ton motor yacht. No it is not CG inspected but it is in class and passes survey every year. The labeling is correct as it pertains to the DNV classification guidelines. Keep in mind that this is not a US built boat and things are done differently in other countries.

rbcool · Post by **rbcool** » Thu Dec 02, 2010 4:49 pm

That's just a little bigger than mine, Doug

Ron