Burst water line

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   So we had just gotten up and were getting ready to go out for a couple of days on the boat when my wife says:

"there's water all over the floor in the head!".     
"We have no hot water!".   
"I've turned off the pump!"

Groaning,  I investigated a bit and found we had hot water everywhere but the forward head.   Further,  by going into the area where the water pump and accumulator tank reside I could see a pretty good spray of water when the pump was turned on.

OK...  time to find *EXACTLY* where it was. 

Breaking out the endoscopic camera I was able to get visibility up behind the galley sink.  For those who don't have one,  this is one of the more useful things you can have on a boat.   It is a waterproof digital camera on about 20' of waterproof cable that broadcasts a WIFI hotspot and lets your cell phone see the live image or take pictures.    Think "colonoscopy for boats"....   I also put it on the end of a boat hook to check out the bow/stern thrusters.  

Here is what it saw....

Apparently the mushroom in the middle of the red line was an explosion of the hose.  A hot water aneurysm.  So now I knew what I was dealing with.    Fortunately there is decent access to the back of the sink lines by taking the cabinetry under the sink apart and removing the face plate and sink faucet/mixer.   Easy repair.

That said,  I'm wondering if others have had this happen?   Its the hot water line, but I am worried that hot water hoses and the occasional slug of air might have more surprises for me.  This was clearly a defective hose, with a weak spot in one of the more inaccessible places on the boat (of course)...

Is it a common thing?   If so,  I'll need to increase my spares/repair capability.

Edited by Black Diamond - 13 June 2025 at 14:17

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Black Diamond Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 24 October 2015 Location: Newport, RI, US Status: Offline Points: 1275	Post Options Post Reply Quote Black Diamond Report Post Thanks(0) Quote Reply Topic: Burst water line Posted: 13 June 2025 at 14:14
	So we had just gotten up and were getting ready to go out for a couple of days on the boat when my wife says: "there's water all over the floor in the head!". "We have no hot water!". "I've turned off the pump!" Groaning, I investigated a bit and found we had hot water everywhere but the forward head. Further, by going into the area where the water pump and accumulator tank reside I could see a pretty good spray of water when the pump was turned on. OK... time to find EXACTLY where it was. Breaking out the endoscopic camera I was able to get visibility up behind the galley sink. For those who don't have one, this is one of the more useful things you can have on a boat. It is a waterproof digital camera on about 20' of waterproof cable that broadcasts a WIFI hotspot and lets your cell phone see the live image or take pictures. Think "colonoscopy for boats".... I also put it on the end of a boat hook to check out the bow/stern thrusters. Here is what it saw.... Apparently the mushroom in the middle of the red line was an explosion of the hose. A hot water aneurysm. So now I knew what I was dealing with. Fortunately there is decent access to the back of the sink lines by taking the cabinetry under the sink apart and removing the face plate and sink faucet/mixer. Easy repair. That said, I'm wondering if others have had this happen? Its the hot water line, but I am worried that hot water hoses and the occasional slug of air might have more surprises for me. This was clearly a defective hose, with a weak spot in one of the more inaccessible places on the boat (of course)... Is it a common thing? If so, I'll need to increase my spares/repair capability. Edited by Black Diamond - 13 June 2025 at 14:17
	Rick S/V Black Diamond Hanse 575 Build #192, Hull# 161 Newport, RI

Arcadia Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 27 November 2017 Location: Sag Harbor, USA Status: Offline Points: 1112	Post Options Post Reply Quote Arcadia Report Post Thanks(0) Quote Reply Posted: 13 June 2025 at 15:41
	Haven’t seen anything like that. I see the standard white Prineto pipes that Hanse uses but I don’t recognize the blue and red tubes that lead to the fixtures. On my 588 those connecting tubes are metal braided lines typically seen in residential installations. Also, without a hot water expansion tank, excess pressure builds up in the hot water lines which may have contributed to the failure.
	Leon / ARCADIA 2018 Hanse 588 Sag Harbor, NY

Pzucchel Members Profile Send Private Message Find Members Posts Add to Buddy List Rear Admiral Joined: 13 March 2020 Location: floating Status: Offline Points: 659	Post Options Post Reply Quote Pzucchel Report Post Thanks(0) Quote Reply Posted: 13 June 2025 at 15:59
	I have to report...i have a boiler issue! essentially, tripping the 220V...it must be galvanic corrosion of the heater element, under study. However, having emptied the boiler and refilled it, i realised that it now acts as a water expansion tank. Surely, there must be some air inside, because the pump is delayed when i open a tap, and it keeps working after it has been closed. I am quite happy to keep it like this, because in the past the sudden pressure pulses had created a very subtle leak that i've been searching for about 6 months, and it was activating the pressure pump overnight periodically...
	Hanse588#55



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