Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 15-05-2020, 17:37   #1
Registered User

Join Date: Apr 2020
Location: New Zealand
Boat: Wellsford Navigator
Posts: 5
Chemical heads?

G'day All,

Amongst the candidates for a new boat that I'm looking at purchasing, is one that ticks a lot of the boxes except for the fact that it has a camper-van-style, cassette-type chemical head. I'm guessing the capacity of the tank will be about 10 to 12 litres (2.2-2.6 imp.gallons), which I would think is about enough to be carrying ashore for disposal.

How practical do we all think they are? I'm thinking "not very", even if I buy a spare cassette to double the capacity for longer trips. The one I'm looking at appears to be located in a position whereby a standard pump-able head could be fitted, but then I'll obviously have to consider fitting a waste tank too. However, I wouldn't want to go through that palaver, if it's generally thought that cassette-type heads are fine.

As you will correctly assume by my tone, I'm a bit meh about it, but I'd like to get some feedback and opinion.

Cheers all!

Craig
__________________

__________________
Craig Holmes 海瑞
Maritime Pilot
Aspiring Yottie
Advara is offline   Reply With Quote
Old 15-05-2020, 18:33   #2
Marine Service Provider
 
peghall's Avatar

Join Date: Feb 2011
Posts: 2,207
Re: Chemical heads?

Don't sell cassette toilets (we call them portapotties) short...there are versions that can make a lot of sense on a boat up to 30'. One is the "MSD" portapotty. That's not a brand name...the "MSD" designation in the model name/number means it has fittings for a pumpout line and vent line, and is designed to be permanently installed (actually just sturdier brackets than portables, so you could still take it off the boat if you absolutely have to), which means that although it's still called a PORTApotty, you don't have to carry anything off the boat to empty it.

One of the advantages is, they use less than a pint of flush water, which means a 5-6 gallon model--which I recommend for two reasons: 1. it's the same height as a domestic toilet, so you're not "squatting on a bucket"...and 2. it holds 50-60 flushes...you'd need at least a 30 gal tank to hold that many from a manual marine toilet. And like any other cassette toilet, it's completely self contained, so no plumbing needed except a vent line and pumpout hose...and there's -0- maintenance needed except for rinsing out the tank--which you can do with a bucket while it's being pumped out. Total cost including the pumpout hose and vent line is about $200USD--a fraction of what you'd spend for toilet, tank and all the related plumbing needed. And the best part is, you have all the advantages of a toilet and holding tank without giving up a single square foot of storage space. And with the right tank product (I recommend No-Flex Digestor), there's NO odor!

I'm 95% certain that the Dometic/SeaLand 975MSD Sanipottie is available "down under," if not in NZ, in AU.


--Peggie
__________________

__________________
2020 Peggie Hall
Specializing in marine sanitation since '87.
Author "The NEW Get Rid of Boat Odors"
peghall is online now   Reply With Quote
Old 15-05-2020, 19:33   #3
Registered User

Join Date: Apr 2020
Location: New Zealand
Boat: Wellsford Navigator
Posts: 5
Re: Chemical heads?

Hello Peggie,

Thank you so much for that. I was prepared that an answer along those lines might be forthcoming, but certainly not as detailed and comprehensive. I'm so pleased that someone has taken the time to specialise in this somewhat less than glamorous, but essential aspect of boating. You must be one of few people in the world that takes "You're talking crap!" as a compliment! A dollar for every time you've heard that?

So the boat stays on the short-list and I will go and view it very soon, since we are now released from lockdown. She's a 10 metre (33-footer) but there's only ever likely to be two of us on board, on rare occasions maybe a third. I've emailed the current owner to get the spec on the resident 'portapottie' (so much easier and less formal than 'cassette toilet'), which will doubtless suffice in the short term. I've also established that the Dometic/SeaLand 975MSD Sanipottie is available in New Zealand and obtainable through Ebay and suchlike anyway, for around the price you suggest, so no worries on the procurement side of things.

So, that was a quick turnaround in my headspace, which I guess is what asking questions on these type of forms can produce.

Thanks again Peggie,

All the best,

Craig
__________________
Craig Holmes 海瑞
Maritime Pilot
Aspiring Yottie
Advara is offline   Reply With Quote
Old 15-05-2020, 20:13   #4
Marine Service Provider
 
peghall's Avatar

Join Date: Feb 2011
Posts: 2,207
Re: Chemical heads?

Glad I had useful info to offer you!



--Peggie
__________________
2020 Peggie Hall
Specializing in marine sanitation since '87.
Author "The NEW Get Rid of Boat Odors"
peghall is online now   Reply With Quote
Old 16-05-2020, 06:40   #5
Registered User

Join Date: Sep 2012
Location: Kemah, Texas
Boat: Pearson 365 ketch
Posts: 44
Re: Chemical heads?

If this boat fits most of your criterion then the actual style of toilet may not be that important. Many have used the cassettes successfully and Peg has offered a way to convert a simple cassette to a pump out version. There are some biolitter (most refer to these as composting toilets) toilets that are similar size. There are some "do it yourself" versions if you are handy. All will work.

Who knows, you may love the cassette. If not, you will have the time to evaluate which toilet you can live with.
Phantom Jim is offline   Reply With Quote
Old 16-05-2020, 06:57   #6
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 30,037
Re: Chemical heads?

My Center Console had a permanently installed Port a potty, it had a pump out fitting and you could pump it out just like any other boat. Without that pump out fitting I wouldn’t be interested, but with it for a boat that isn’t full time they are great, they don’t have all the issues ones with tanks and thru hulls and long hoses do.
It also never had a smell, the formaldehyde I guess took care of that.
However it could not direct discharge, nor could it pump itself out, you could install a macerator and a thru hull, but for a boat that was only used occasionally, why bother?

For a boat that we only really used for diving and fishing occasionally and didn’t overnight on, it was perfect, but then the little boat wasn’t really big enough for a waste tank.

There are two types of chemicals, one is a type of enzyme or similar and deals with it biologically, and one is basically embalming fluid, Formaldehyde, it works by killing any kind of life of course, the thing is you have to really, really clean it out well if you use the enzyme one if there was ever the embalming fluid in it, as it will kill the enzyme or whatever it is, and People therefore think the enzyme doesn’t work, it does just you can’t mix it with the chemical that kills everything.
__________________

a64pilot is online now   Reply With Quote
Reply

Tags
cal, head

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Any 'Stop-Leak' Kind of Chemical for Marine Cooling Systems? CSY Man Engines and Propulsion Systems 7 09-10-2009 17:10
Chemical Resistance Chart BlueSovereign Construction, Maintenance & Refit 3 25-06-2009 23:59
Chemical smell in reefer boxes chienbizarre Construction, Maintenance & Refit 7 19-09-2008 12:22
How to get chemical taste out of new black water tanks. dbatkinson Plumbing Systems and Fixtures 33 25-08-2008 15:03
Slight Chemical Taste from Katadyn 40e new in box, but bought second-hand S/V Penzi Plumbing Systems and Fixtures 8 06-05-2008 08:59

Advertise Here


All times are GMT -7. The time now is 19:58.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.