2015 R25-SC Lazarette sub-compartment not draining

[John McCurdy]

Working through some hopefully minor issues on a new boat to me:

At the aft of the starboard lazarette is a small separate and slightly raised compartment that houses the sonar transducer. On my boat there is standing water in this compartment, evidently it has been there a long time, and there is a drain on the forward wall at the base of the compartment. So that drain isn't draining.

I carefully used small a plumbing snake to probe the drain line hoping to clear a clog, but was able to easily feed 25' of line into the hole with no luck. Obviously the cable started coiling up somewhere (25 feet on a 25 foot boat), and it sounded like it was under the lazarette.

My question is, where does this compartment drain to? It seems like it should either connect to one of the main scupper lines, or drain into the bilge. My concern is, if there is a line connected to the drain hole that has come loose, water could be draining between the hull and the liner. Although that seems unlikely, since water is backing up. I'm going to try and boroscope it, but I'll still need to understand where it is supposed to go.

Thoughts?

Thanks,
John

 

[Red Raven]

The starboard locker drains into the bilge just forward the raw water pickup below the seacock. You’ll need to snake it out from the bilge because the space under the locker is open space as you found.

Curt

 

[Chimo]

Working through some hopefully minor issues on a new boat to me:

At the aft of the starboard lazarette is a small separate and slightly raised compartment that houses the sonar transducer. On my boat there is standing water in this compartment, evidently it has been there a long time, and there is a drain on the forward wall at the base of the compartment. So that drain isn't draining.

I carefully used small a plumbing snake to probe the drain line hoping to clear a clog, but was able to easily feed 25' of line into the hole with no luck. Obviously the cable started coiling up somewhere (25 feet on a 25 foot boat), and it sounded like it was under the lazarette.

My question is, where does this compartment drain to? It seems like it should either connect to one of the main scupper lines, or drain into the bilge. My concern is, if there is a line connected to the drain hole that has come loose, water could be draining between the hull and the liner. Although that seems unlikely, since water is backing up. I'm going to try and boroscope it, but I'll still need to understand where it is supposed to go.

Thoughts?

Thanks,
John

 

[Chimo]

Curt is absolutely right, as usual .

I found that the drain on our R25SC was not plugged but water still collected near the transducer. The drain is set too high. I used a shop vac to drain the area and then sponges, etc. to get the remainder It took a while. I then wondered where the water was coming from. It’s fresh water and the boat is kept in a boathouse. No rain. I found that, when I ran the boat from cold, the engine heated the hot water tank and the contents expanded (PV/T=c from high school physics) dripping out of the pressure relief valve. That water collected in the lazarette. Two solutions. Open the faucet as hot on the sink before leaving the dock (with water pressure off) and the excess will expand overboard works great if you remember to do it. Attach a plastic hose and lead it into a Tupperware box as a sump in case you forget. The lazarette has been dry since, as long as I remember to drain the box occasionally. If you’re interested, I have photos.