Has anyone experienced prop cavitation/ventilation in a following sea? I have a 43' double cabin
and didn't notice the issue when running into the sea(5-7') only on our return trip in following seas (3-5').
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07-10-2017 10:57 PM #1Registered Member
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- Apr 2015
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Do stablizers cause/create air around props in a following sea.
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07-10-2017 11:25 PM #2
Re: Do stablizers cause/create air around props in a following sea.
Do the math. Stabilizers are forward of the props.
Scott
41C117 "Hattatude"
Port Canaveral Florida.
Marine Electronics and Electrical Products Distributor.
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07-10-2017 11:36 PM #3Senior Member
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- Apr 2008
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Re: Do stablizers cause/create air around props in a following sea.
Never experienced that, Gyro-gale (4 fins).
GLORY Hull # 365
Northport, NY
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Re: Do stablizers cause/create air around props in a following sea.
I guess it depends on the boat and conditions incl how much the fins move. On the boat I run (84' Lazzara) sometimes yes you hear a slight rumble when the fins fully deflects which I assume is some disruption of the flow into the wheels.
Pascal
Miami, FL
1970 53 MY #325 Cummins 6CTAs
2014 26' gaff rigged sloop
2007 Sandbarhopper 13
12' Westphal Cat boat
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Re: Do stablizers cause/create air around props in a following sea.
A lot of Stabilizers cause cavitiation. I Rather roll than have the props suck air and cause the whole boat to shake.
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Re: Do stablizers cause/create air around props in a following sea.
I had the same boat with stabilizers. They should be off in a following sea. Otherwise never did experience cavitation.
Fred
31 Tiara Open
"Escalation"
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Re: Do stablizers cause/create air around props in a following sea.
I've never felt any cavatation underway.
SEVEN
1979 53' MY Hull #563
Antioch, California
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07-11-2017 05:05 PM #8Senior Member
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- Apr 2005
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- 1,162
Re: Do stablizers cause/create air around props in a following sea.
On a 48 LRC with 4 fin Gyro-Gales, in certain following sea conditions, I can hear a slight rumble now and then if I stand in the salon just over the shaft between struts. This is a very quiet environment where office level speech works fine.
Might ask how I ever noticed it. The Admiral is constantly on alert for any new sounds and heard it while in the gallery underway, the galley sharing open space with the salon. Great support from the Admiral.
Pete
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07-11-2017 08:13 PM #9Senior Member
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- Apr 2005
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Re: Do stablizers cause/create air around props in a following sea.
I have made several ocean crossings to Europe on fairly large ships as a young man and on one trip we had enormous seas and the ship would shutter with each passing wave. Probably cavitation.
Walt
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07-11-2017 08:30 PM #10Senior Member
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- Apr 2008
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Re: Do stablizers cause/create air around props in a following sea.
In following seas the stabilizers will be working harder and it is fairly common to have them occasionally channel some air along the botom of the hull that will cause the props to ventilate a bit. It won't hurt anything though. Running downswell is when you really appreciate how much they add to your comfort.