cockpit water drainage

[Frank mellin]

Am getting to know the westerly centaur i bought recently.
decided to clean the cockpit area with jetwash and was surprised to find that it started to fill with water!!
Have had the boat for couple of months and no problem previously so can only assume that in my wisdom I have jetwashed some muck into the drain holes .
Have tried pressure to clear and pipes are clear down to seacocks so seems blockage is in the outlets.
Has anyone had this problem and cured it without taking the boat out of the water
Also there is a 10mm copper pipe that runs from the Nanni engine into the cockpit floor which when the engine is running pumps out water.
As there is an exhaust/water outlet on the stern which discharges the water from the cooling process what is the water that discharges into the cockpit?
Grateful for any help

 

[lpdsn]

With the proviso that I don't know the Centaur and I'm sure other Centaur owners will be along soon, build up of muck in the cockpit drains is quite common over winter.

I find a flush with a hose is enough for the main ones. I also have secondary drains on a segment where lines run under the deck and they are only 1/4" diameter and regularly block completely. I find using a typical toilet/sink plunger over the exit solves the problem quite quickly.

PS the engine drain into the cockpit is probably a tell-tale to allow you to quickly spot if the cooling water isn't getting to the engine and exhaust. Most of the cooling water will still be leaving via the exhaust.

 

[PlankWalker]

The piddler you have in the cockpit is an anti syphon devise that stops water syphoning back into the engine after the engine is turned off.
It is by far the best arrangement as you can immediately see if the water is not circulating, and do something about it.
With regard to the blocked cockpit drains try rodding through the open sea-cock with something like spiral curtain wire, failing that you may have to attack it from enderneath.

Plank

 

[Topcat47]

The cockpit drains should have seacocks. It they are shut, you'll fill the cockpit with a pressure hose. +1 with the anti-siphon tell tale.

 

[Frank mellin]

appreciate your prompt reply, many thanks

 

[Spyro]

The cockpit drains should have seacocks. It they are shut, you'll fill the cockpit with a pressure hose. +1 with the anti-siphon tell tale.

And the pipes may well cross over.

 

[johnalison]

One of my cockpit drains has got bunged up recently. It appears to be at a T join where it combines with another drain and has so far been resistant to poking with a flexible unblocking tool like an extended curtain rail. I think that dismantling is the next option, but a Centaur's might well be hard to get at.

 

[William_H]

A bit of fred drift but one locally made design here in sizes from 18 to 22 ft called a Space Sailer have a dreadful habit of getting the cockpit drains blocked over summer by seagul **** and sticks that they try to build nests with. Come decent rain the cockpit fills with water. sadly this design has a fairly low bridge deck such that when the cockpit is hal;f full of water it can then run into the cabin past the wash boards. Before you know it the bow is low and eventually the whole boat sinks. Now this only comes from long periods of non attendance on the boat but the scene is quite common around here.
The message is do keep an eye on cockpit drains . olewill