Re: Fresh Water Tank cleaning with isopropyl alcohol

Ulrich Michael Dangelmeyer


Am 12.05.2022 um 20:51 schrieb Mohammad Shirloo <mshirloo@...>:

Hi Ulrich;


Picked it up from an industrial supply house in Montenegro. I’m not on board and don’t remember the exact model, but if you search for submersible trash pumps, you should get a few pop up. They are not small but not too large either. Ours barely fits through the fresh water tank access hole. This was important so the cleaning of the water tank is now quick and easy. We did notice some spots on the walls of the tank, added 9 liters of regular bleach to 900 for a 1% mix. Left it for 24 hours , pumped it out with the pump and flushed the tank with fresh water 3 times. Ended up with a spotless tank that looked brand new.


I’ll be on board end of next week. If you have problems finding one, let me know and I can send you a picture of the label on the pump. We also got a long fire hose, so we can place the pump anywhere on the boat. Still hoping that this pump never has to touch salt water.


Happy Sailing;



Mohammad and Aty

B&B Kokomo

AMEL 54 #099


From: <> On Behalf Of Ulrich Michael Dangelmeyer via
Sent: Thursday, May 12, 2022 10:28 AM
Subject: Re: [AmelYachtOwners] Fresh Water Tank cleaning with isopropyl alcohol


Hi Mohammad & Aty,

Please, what’s the brand and type of this monster pump.

Professional firefighters equipment?

Thanks for Info 



Soleil Bleu A54#088

Am 12.05.2022 um 19:44 schrieb Mohammad Shirloo <mshirloo@...>:

We carry a 220 V trash pump that pumps about 2000 liters (500 gallons)/minute for emergencies. It is designed to continue pumping even with trash and other items that may be floating around, fits through the fresh water tank opening and empties out the entire 900 liters under a minute with a fire hose. We did weigh the risk/benefits of the 220V vs 24V and felt the risk of high voltage with a pump designed to work in wet and submersible environment, was worth the benefit of moving a considerable amount of water volume. It can be run off of the inverter and with the generator and full tank of diesel, the pump can run for days. We may also pick up a good 24V pump, to have both options, since they do not take much room. When you look at how much water can come in, even from a small hole/crack, being able to move a high quantity of water, provides valuable extra time to effect repairs.


Happy Sailing;



Mohammad and Aty

B&B Kokomo

AMEL 54 #099


From: <> On Behalf Of CW Bill Rouse via
Sent: Thursday, May 12, 2022 8:18 AM
To: Notification <>
Subject: Re: [AmelYachtOwners] Fresh Water Tank cleaning with isopropyl alcohol


I recommend the submersible pump for 2 reasons:

  1. The boat's freshwater pump can be used, but it is probably not rated for continuous use. I say probably because the original pumps installed by Amel in the SN, SM, 54, 55 & 50 are not rated for continuous use, and how do I know what the previous owner(s) replaced the original pump with. Although it would not be continuous use, it would be a lot more than normal use.
  2. You should probably have a pump similar to the RULE 1500 to 3000 GPH submersible pump for lots of other reasons, including most insurance policies currently require more than the capacity of the gray water pump.


CW Bill Rouse Amel Owners Yacht School

720 Winnie, Galveston Island, Texas 77550 



On Thu, May 12, 2022 at 8:08 AM Gregory Dmitriev <41greg.marine@...> wrote:

Hi Bill,
looks clear, but why you recommend to use submergible pump instead of regular fresh water pump? If the chlorine solution (very diluted, like  5% of 1L ->50g to 900 L -> 0,005%) will go out through black water tanks and the bilge, would it also give extra disinfection?


A54 172

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