cockpit drains

[kunyang]

In my Halcyon Clipper, I have two number 25mm (approx) drains through the transom. When motoring, these let water into the cockpit as they dip below sea level. I worry that water may get through the engine hatch. Is there a valve or mod I can try. I have used two key float corks last season with little success. I know I could just block them with large corks when necessary but I would like a more permanent solution.

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[Talbot]

two options - both used in RIBs

1. fit abt 1 ft of flat hose to the outlet and when there is a possibility of water coming back up the hose, lift it above the waterline with a piece of string.

2. replace the above with a purpose designed valve equipped with a ping pong ball that bungs up the hole when the water level is too high.

both available from your nearest RIB shop /forums/images/icons/smile.gif

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[oldsaltoz]

G'day David, and welcome to the forums.

How much height do you have between the cockpit floor and the top of the outlet?
raising the outlet will cure the problems.

Can you shift any weight further forward?

The flat hose may work, but I avoid the balls, they may restrict the flow when needed.

Hope this helps.




<hr width=100% size=1> Old Salt Oz /forums/images/icons/cool.gif Growing old is unavoidable. However, growing up is still optional.

 

[Guest]

I have same problem on my Sunrider ..... so the drain pipes have valves fitted. You could try non-return valves ...... but they are unreliable after a period .....

So when sailing / alongside moored - I open them, start engine - close valves !!


<hr width=100% size=1>Nigel ...
<A target="_blank" HREF=http://www.qqbaltic.com/index.html>http://www.qqbaltic.com/index.html</A> For all those disbelievers ! /forums/images/icons/cool.gif

 

[Vara]

Had similar problem glued top edge of small flap of neoprene(wet suit off cut)over outlet had seen similar solution on racing dinghy,worked well.

<hr width=100% size=1>If it can't be fixed with a lump hammer dont fit it!

 

[discovery2]

I have a flap valve fitted to the outside of the transom that lets water out, but blocks the hole when water tries to enter from the outside. Not a perfect seal, but certainly adequate on our motor cruiser.

www.asap-supplies.com have a similar product (part no. P-0365DP) that may be of some use. They also do a complete through tramsom assembly part no. P-0323DP).

Hope this helps.
David

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[William_H]

Sorry I don't really know the boat or it's size but are the outlets through the hull and if so are they any where near the prop wash. You say that the water comes in when motoring but not sailing? I once sailed in a boat where the inboard prop wash pumped water up into an outboard well which doubled as the cockpit drain. I thought the boat was sinking until I stopped the engine and the water drained away.. The answer move the prop or the water drains.
In my boat water up into the cockpit is a sign that there is too much load in the cockpit and the transom is dragging the answer is to get weight forward to lift the transom. Get someone to look at your boat for fore and aft trim when the water is coming in you may be surprised to see how stern low it is.

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[halcyon]

We have a Halcyon 27 with two 4 inch cockpit drains through the transom, and have not had any water in limited use. They were added by previous owner after (or before not sure ) Atlantic crossing when they found out it took 30 mins (?) to drain a full cockpit of water.
Be interested what you have, as we have a similar hull.


Brian

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