Re: Fresh Water Tank cleaning with isopropyl alcohol

Mohammad Shirloo

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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