Noises from holding tank??

[Wayne Dengel]

We stayed on our 40.5 last night, and used the heads a few times. Now there seems to be noised like tiny popping sounds coming from under the where the holding tank is. Any idea. I think, after everyone wakes up that I will remove that section of flooring to find whats up.

Any ideas.


Wayne

 

[Wayne Dengel]

OK, so now it sounds like it is coming from the whole bottom of the hull.

HELP!!! What is this noise???

Wayne

 

[Bill Jones]

Could the noise possibly be coming from something in the water, not boat related?

 

[stephen Penny]

Transformer?

 

[Rich Stidger]

Wayne,

You post reminds me of a time I had a mooring in New London, CT. On our mooring we would sometimes hear clicking or tapping sounds on the hull. I never found the source, but another sailor told me it was some kind of sealife. That boat was not my current Hunter 40.5, so if your sounds are the same it would not be due to your boat.

I wouldn't spend time and effort pulling up floorboards looking for a source that you probably won't find.

I doubt the sound has anything to do with your holding tank.

 

[Peggie Hall HeadMistress]

I'm guessing snapping shrimp

Fascinating critters that can make enough noise to mess up sonar.

Google "snapping shrimp" to learn all about 'em.

 

[cbsailor]

Bubba Gump Shrimp

It's just some little sea critters making the noise. Pistol Shrimp, brine shrimp or krill are the names used to refer the those critters that make the clicking or popping sounds against your hull.

 

[Peggie Hall HeadMistress]

Not krill or brine shrimp...

[FONT=Arial, Helvetica, sans-serif]They're totally different critters, not just different names for the same critter...

It wouldn't be brine shrimp because brine shrimp are only found naturally only in water bodies so salty that predators and competitors for the same food cannot survive.

Krill are found in all ocean waters, but they aren't "snappers."

The snapping shrimp are fascinating li'l critters..."[/FONT]a dirty-green crustacean that prowls the shallow waters of tropical seas. It has two claws', one resembling an oversize boxing glove, which it uses to stun prey, such as small crabs, by snapping the oversize claw shut. When the claw snaps shut, a jet of water shoots out from a socket in the claw at speeds of up to 62 miles (100 kilometers) an hour, generating a low-pressure bubble in its wake. As the pressure stabilizes, the bubble collapses with a loud bang.The whole process occurs within 300 microseconds. When colonies of the shrimp snap their claws, the cacophony is so intense that submarines can take advantage of it to hide from sonar."

There's a lot more if you want to google it...

 

[Wayne Dengel]

Well, I feel like a fool. This AM I ran into Captain Gene, who was about to dive to do some bottoms in the marina. (His side job). He told me exactly what you all said. It is a kind-of brine-shrink/krill type animal. In fact, when he came up from scraping someone, he was covered with em. He said in the summer, they get THICK with them in the Marina. (Port Royal, SC).

Anyway, I did pull up all the floor boards today, but that was to bleach/soap, water, and water-vac them out, as well as the bilge. They are all very clean now, except the one under-sink and sitting area. That will be in a few months when I pull them all to bring them all home to refinish them. They had water damage from PO when he over-filled the starboard water tank.

Anyway, my wife, kids and I got a ton cleaned again this weekend. I am looking forward to when inside is DONE, and I can pull/clean all the sheets/halyards, then tune the rigging, then get out on the water. But for now, we are learning the boar inside/out.

Thanks to all the responded.

Peace/Grace,
Wayne

 

[Rick D]

Of course, you know there is a Starboard & Port belly water tank. When you have the floor up, take some sealant, & pull all the screws loose and re-bed them. That modest effort save a lot of leakage in those two tanks. The Starboard one is most susceptible since it is a traffic pattern. A hint that I use: when I fill up all the tanks, I run the spigot and drain off a bit from each tank so none are pressurized by over-filling; has worked for me.

 

[Wayne Dengel]

Thanks Rick, that is a good idea.
WHen I had the floor up for cleaning, the saw that the starbord one had a lot of sealent, but also some pooled water. I will re-seal it all soon.

Peace/Grace,
Wayne