Clogged Sink

Never got a bad weather forecast, huh?

Don’t know about you, but I don’t think you should suggest someone else only plan for the good.
If there is bad enough weather that a 1/2” through hull sink drain is going to sink the boat, that is the LEAST of your issues LOL.
 
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Never got a bad weather forecast, huh?

Don’t know about you, but I don’t think you should suggest someone else only plan for the good.
Not suggesting what anyone should do with their boat, but I never had a problem on any of MY boats without a loop. Do what you want.
 
Thank you for replying. How can I find it if my sink ports to the shower Sump?
The galley could drain either place - it depends on a specific model and sometimes even the year and/or which plant it was built in. Pour some water in the sink and look over the side - look for a small thru-hull in the vicinity of the sink. And/or, look at your sump box. If you have never looked at/cleaned your sump box, well, now you have more on your checklist of "to-do" items! :) And, if you didn't know this by now, a boat's checklist will never be finished... sometimes it seems to grow faster than the rate you are checking things off...

Sometimes, the owner's manuals even have a diagram of various thru-hulls and their description. You could check in there - download it from SR's site if you don't have the original paper copy.
 
If there is bad enough weather that a 1/2” through hull sink drain is going to sink the boat, that is the LEAST of your issues LOL.
You’re still a genius, aren’t ya?!

I just wouldn’t want the mess and or damage if it was avoidable.
 
prolly right, but if seas so heavy as to do that, i not leaving the slip.
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You will be missing a lot of nice cruising days then. Following seas are great.
 
You’re still a genius, aren’t ya?!

I just wouldn’t want the mess and or damage if it was avoidable.
Why so hostile? You are new here. We try to be civil. Maybe less so in the holding tank but personal insults are not what we do.
 
Why so hostile? You are new here. We try to be civil. Maybe less so in the holding tank but personal insults are not what we do.
Yeah,
I probably should keep it lighter.
Honestly forgot wasn’t in the holding tank.
Only new (ish) at posting (3 years). Been reading for quite awhile.
 
Try using a garden hose with trigger nozzle. Remove strainer, hold nozzle in drain. Place a towel over your hand and nozzle to reduce blow back spray. Unlikely that the sink drains into sump, but if it does and clears, shop vac the gunk out of the sump box. While your are at it, hit the rest of the drains too. My shower and galley sink drains slow at least twice a year and this has always worked.
This is exactly what I do, the queen can’t seem to help herself from thinking we are at home and have the best insunkerator money can buy. My galley sink and head sink drain straight over the side. Look under the sink if there’s a loop and it terminates at the side of the hull hit it with the hose.
 
I run a drain snake to clear the kitchen sink pipe and also the shower drain. It is easy to do.

It works best for the kitchen sink if you also run from the outside in. Run water with it, crap will come out.

I find I need to do it once in the middle of the summer and once again at the end of the year. That is from living on the boat 5 days a week on average, so YMMV.
 
I used this with good success.
Wanted something that would not harm the pipes or eat a whole in them as they are not easy to get to to change if something should happen.
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Dump a cup of baking soda down the drain then about a cup of white vinegar. Cover drain with a damp cloth and wait 30 min. Wash very hot water down the drain. Should really clean the pipes. If it’s draining to a sump box, be sure to flush out.
 
I think all of our sinks drain slowly. I think the hose is corrugated plastic which can't drain very well. I could have that wrong though. It if is corrugated, I think you could replace it with a smooth walled hose, with a loop, and it might improve it.
This makes sense to me.
 
If there is bad enough weather that a 1/2” through hull sink drain is going to sink the boat, that is the LEAST of your issues LOL.

The loop is there for preventing a mess in your salon, not to prevent a sinking. Folks who boat on the Great Lakes almost always experience 1-3 foot seas and frequently 2-4 footers. When you run in a following sea of those sizes, the drain on the side of the boat is frequently submerged. The loop prevents the locker beneath the sink and the carpet in that area from getting wet. When you sell the boat you will likely have to install a proper drain. You might as well have it in place while you use the boat to prevent issues.
 
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I'm pretty sure the loop is also intended as a gas trap. The residual water in the bottom of the loop prevents carbon monoxide from entering the cabin through the drain.
 
Google "siphon breaks" to learn about why plumbing lines are looped on boats.
 
You guys all got the "scientific" marketing reasons for a loop in the drain line, but left out the one that will affect you the most if you need to work on the hose. The loop exists in part because it makes installing the hose soooo much easier. A straight run hose without a loop must be exactly the right length and orientation with the nipple it is connecting with. But with a little extra length and a loop it becomes easy peezie. Don't believe me? Go remove one of the solid tube feed lines from under a sink or toilet. Take it off, give it a little bend. Now try and put it on. When that does not work and you've given up, run down to Home Despot and get a longish flexible braided cover feed line hose. Connect it to one nipple, give it a little loop and you'll discover it will go together in a flash. Sea Ray ain't stupid, and they damn well know how to save time when building a boat (time is $$$$), the loops are there to make connecting the hoses easier, faster and more profitable.
 
You guys all got the "scientific" marketing reasons for a loop in the drain line, but left out the one that will affect you the most if you need to work on the hose. The loop exists in part because it makes installing the hose soooo much easier. A straight run hose without a loop must be exactly the right length and orientation with the nipple it is connecting with. But with a little extra length and a loop it becomes easy peezie. Don't believe me? Go remove one of the solid tube feed lines from under a sink or toilet. Take it off, give it a little bend. Now try and put it on. When that does not work and you've given up, run down to Home Despot and get a longish flexible braided cover feed line hose. Connect it to one nipple, give it a little loop and you'll discover it will go together in a flash. Sea Ray ain't stupid, and they damn well know how to save time when building a boat (time is $$$$), the loops are there to make connecting the hoses easier, faster and more profitable.
Good point, but surely building codes drive the design.
 
Good point, but surely building codes drive the design.
I’m not familiar enough with ABYC standards to even know if there is a code requirement for a loop in a sink drain line. I do know that our Sabre uses hard sided hose for all sink and shower sump drains. That said, unlike Sea Ray, every through hull (even above the water line, e.g. sink drains) goes through a seacock.
 

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