Black water tank

sailaboutvic

Well-known member
Joined
26 Jan 2004
Messages
9,983
Location
Northern Europe
Visit site
So we in the Netherlands without a black water tank , pooing in a plastic bags is just getting to me .
I plain to make a temporary black water tank using a three way valve , and a water container,
Standing the container high on the back of the head so the pipe is more like a swan neck .
No doubt it probably smell a bit when in use them emptying it when we found some where like a loo .
Any suggestions while this wouldn't work?
Or how to make it better ?
 

Yngmar

Well-known member
Joined
6 Dec 2012
Messages
3,087
Location
Gone cruising
Visit site
You also need to vent it. If you don't vent it overboard (stern topsides is best, in case it overflows), the brown fog will inevitably escape into the cabin, especially while new content enters the tank, but also slowly all day long.

When we were young and family camping, we had a bucket with a tight fitting plastic lid. Probably an upgrade from plastic bags. Or fancier, one of those blue fluid cassette camping toilets. The top is the toilet, the bottom the tank, which you can detach and carry off by the handle for emptying. (Photo)

Or just fit a proper holding tank. Surely all of the bits can be found easily in the land of Vetus!

Or less fibre in your diet. Then you'll only go every third day.

Or Putin's luggage :ROFLMAO:


1656235792300.png
 

sailaboutvic

Well-known member
Joined
26 Jan 2004
Messages
9,983
Location
Northern Europe
Visit site
You also need to vent it. If you don't vent it overboard (stern topsides is best, in case it overflows), the brown fog will inevitably escape into the cabin, especially while new content enters the tank, but also slowly all day long.

When we were young and family camping, we had a bucket with a tight fitting plastic lid. Probably an upgrade from plastic bags. Or fancier, one of those blue fluid cassette camping toilets. The top is the toilet, the bottom the tank, which you can detach and carry off by the handle for emptying. (Photo)

Or just fit a proper holding tank. Surely all of the bits can be found easily in the land of Vetus!

Or less fibre in your diet. Then you'll only go every third day.

Or Putin's luggage :ROFLMAO:


View attachment 137543
You know my other half is Dutch and there no way she going to let me pump out any solid.
Will get around to fitting one but for now need some thing to keep me going or not go at all .
Another option is stick the container on the deck and pipe it out of the window temp .
 

chris-s

Well-known member
Joined
24 Apr 2019
Messages
692
Visit site
Is the main issue ‘solids’ being pumped overboard where ‘liquids’ wouldn’t be so much of an issue? Our little boat doesn’t have room for a modern sea toilet in the moulded v-berth let alone a holding tank and so a porta potti it is, but this year we made a modification to allow the liquid contents of the bowl to be pumped overboard via an existing foot pump originally fitted to empty the hand sink. And so the bottom half has become a holding tank that lasts is much longer between emptying.
 

sailaboutvic

Well-known member
Joined
26 Jan 2004
Messages
9,983
Location
Northern Europe
Visit site
What ever I make will be temporarily and only for solids .
All the parts other then the container can be reused when the time come to fit a proper tank over winter when I have the time and a places to have one made and sent ,
I doubt I be able to buy the right side tank to fit the space off the self .
As Yngmar said do the job right .
Not keen on porta potty for a start there no where for it without removing the toilet which I do not wish to do.
As for venting it a pipe out of the head window should do the job and if it get too bad the whole lot can be fitted on the deck , not pretty but would do the job while we in the Netherlands.
 

LittleSister

Well-known member
Joined
12 Nov 2007
Messages
18,723
Location
Me Norfolk/Suffolk border - Boat Deben & Southwold
Visit site
If it's any help, you can buy small holding tanks (of various sizes) which are shaped to fit on the bulkhead behind the toilet or whatever, and RM (IIRC a Dutch company) sell a tank which fits around the toilet itself (it's designed to fit around an RM toilet, but I believe it fits round a Jabsco one, though not quite as neatly).

1656324385591.png
1656324314387.png1656324261551.png
 

Chiara’s slave

Well-known member
Joined
14 Apr 2022
Messages
7,737
Location
Western Solent
Visit site
If it's any help, you can buy small holding tanks (of various sizes) which are shaped to fit on the bulkhead behind the toilet or whatever, and RM (IIRC a Dutch company) sell a tank which fits around the toilet itself (it's designed to fit around an RM toilet, but I believe it fits round a Jabsco one, though not quite as neatly).
I looked at those, and would have used one but we decided to sacrifice a locker instead, and have a bigger tank. Size is important sometimes!
 

mjcoon

Well-known member
Joined
18 Jun 2011
Messages
4,655
Location
Berkshire, UK
www.mjcoon.plus.com
If it's any help, you can buy small holding tanks (of various sizes) which are shaped to fit on the bulkhead behind the toilet or whatever, ...
Make sure it's well attached. A memorable delivery flotilla trip years ago included the holding tank falling off its bulkhead attachment and spilling part of its load of sewage over my bare feet...
 

LittleSister

Well-known member
Joined
12 Nov 2007
Messages
18,723
Location
Me Norfolk/Suffolk border - Boat Deben & Southwold
Visit site
I looked at those, and would have used one but we decided to sacrifice a locker instead, and have a bigger tank. Size is important sometimes!

I agree, but it might be a fast fit solution for Sailaboutvic - better than a plastic bag! - or suit anyone who doesn't have the space or whatever for a larger tank.
 

MoodySabre

Well-known member
Joined
24 Oct 2006
Messages
17,258
Location
Bradwell and Leigh-on-Sea
Visit site
I remember seeing, in the Chandlers in Willemstad, some bags that hang in the bowl so that liquid goes down the normally but solids are caught for disposal. Perhaps you are already using camping type toilet bags. Saving money by anchoring has it's cost!
 

sailaboutvic

Well-known member
Joined
26 Jan 2004
Messages
9,983
Location
Northern Europe
Visit site
I remember seeing, in the Chandlers in Willemstad, some bags that hang in the bowl so that liquid goes down the normally but solids are caught for disposal. Perhaps you are already using camping type toilet bags. Saving money by anchoring has it's cost!
Been looking for them bag but not found them yet .
Believe me anchoring as no cost we been doing it for the last 13 years every day for at less. 9 months each year , we love it and we perfir it , any damage we had on our boats have been done in marinas or harbour walls by others .
 

sailaboutvic

Well-known member
Joined
26 Jan 2004
Messages
9,983
Location
Northern Europe
Visit site
If it's any help, you can buy small holding tanks (of various sizes) which are shaped to fit on the bulkhead behind the toilet or whatever, and RM (IIRC a Dutch company) sell a tank which fits around the toilet itself (it's designed to fit around an RM toilet, but I believe it fits round a Jabsco one, though not quite as neatly).

View attachment 137600
View attachment 137599View attachment 137598
There a space just above the heads where probably a 40 lt one will fit but it's a odd shape ,
Once season over I get tank tec to make one up .
 

dgadee

Well-known member
Joined
13 Oct 2010
Messages
3,986
Visit site
40l is not very large, as I found out. Make sure you have a tank/overboard valve. I fitted one afterwards and it makes a big difference to how long to fill.
 

dgadee

Well-known member
Joined
13 Oct 2010
Messages
3,986
Visit site
As a ps, I put a pump out non gravity tank in the smaller boat. Works well. If I had used that approach in the other boat I could have located a place for a larger tank.
 

sailaboutvic

Well-known member
Joined
26 Jan 2004
Messages
9,983
Location
Northern Europe
Visit site
As a ps, I put a pump out non gravity tank in the smaller boat. Works well. If I had used that approach in the other boat I could have located a place for a larger tank.
Problem is there only one place I can place it .
I know 40l isn't great but for solid only it should last long enough till we out of reach to pump put with just two of us .
 
Top