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Add a holding tank
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Carlwasher View Drop Down
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Joined: 31 August 2020
Location: Elh/1000 Island
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Points: 33 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Carlwasher Quote  Post ReplyReply Direct Link To This Post Topic: Add a holding tank
    Posted: 21 September 2020 at 16:19
I am looking for ideas to add additional holding tank capacity to a 370.

Has anyone installed one under the aft cabin bunk?

How about in behind the steering gear in the transom??

Looking for any and all input.

Thank you

Carl
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alidal View Drop Down
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Joined: 30 September 2010
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Points: 297 		Post Options Post Options   Thanks (0) Thanks(0)   Quote alidal Quote  Post ReplyReply Direct Link To This Post Posted: 21 September 2020 at 16:43
https://www.myhanse.com/new-holding-tank&KW=holding_topic9066_post77930.html#77930
Hanse 400#655
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Carlwasher View Drop Down
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Joined: 31 August 2020
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Points: 33 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Carlwasher Quote  Post ReplyReply Direct Link To This Post Posted: 21 September 2020 at 16:51
Originally posted by alidal alidal wrote:

https://www.myhanse.com/new-holding-tank&KW=holding_topic9066_post77930.html#77930

Thank you!!  I did see this.  It is a nice option

I would really like to not lose the closet space if possible.  It seems like there are some other places that a tank could be added.
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S&J View Drop Down
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Joined: 30 August 2014
Location: Perth WA / Med
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Points: 1371 		Post Options Post Options   Thanks (0) Thanks(0)   Quote S&J Quote  Post ReplyReply Direct Link To This Post Posted: 21 September 2020 at 17:19
Based on the layout of the 385 there is a nice space behind the aft cabins but the issue will be getting a tank of any size in there.  The 385 has smallish hatches on either side.  Maybe you could get a 35-40 litre tank or possibly join two smaller tanks?  
Next problem is the length of pipe needed to run from the heads as well as a means of emptying...

I'm interested to see what others think.
H458 #159 Primal Mediterranean cruising
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Fendant View Drop Down
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Joined: 03 November 2012
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Points: 1671 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 21 September 2020 at 18:21
Do you have the 2 or the 2 cabin version ?
Frank
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Peter Russell View Drop Down
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Points: 432 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Russell Quote  Post ReplyReply Direct Link To This Post Posted: 23 September 2020 at 20:28
The 370 has loads of space behind the aft cabins.  However, as you identify the access hatch is relatively small and getting a black water pipe from the heads to there will be problematic without major deconstruction.  It would certainly have to be pumped from the heads and also for the discharge. 
Peter Russell

Hanse 370 hull 499 "Outnumbered"



http://outnumbered.the-russells.net
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Carlwasher View Drop Down
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Points: 33 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Carlwasher Quote  Post ReplyReply Direct Link To This Post Posted: 23 September 2020 at 23:57
Originally posted by Fendant Fendant wrote:

Do you have the 2 or the 2 cabin version ?

2 Cabin
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Fendant View Drop Down
Admiral
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Joined: 03 November 2012
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Points: 1671 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 24 September 2020 at 17:49
Carl,

you should have in this case a panel in the shower. Take it off and you will detect a spacious compartment behind. I was able to fit a stainless steel tank with 50 ltr. which is connected to the tine 30 ltr tank Hanse fits. I installed a 2nd deck outlet and a 2nd vent for it.
I strongly recommend to fabricate a plywood or card box model first with all the necessary fittings attached before you order the SS final.
Frank
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Peter Russell View Drop Down
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Joined: 24 October 2007
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Points: 432 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Russell Quote  Post ReplyReply Direct Link To This Post Posted: 24 September 2020 at 19:57
Frank
Interested in where the panel is that you say is in the shower compartment.  My 2008 370 has nothing aside from the existing holding tank panel that would fit this description.
Peter Russell

Hanse 370 hull 499 "Outnumbered"



http://outnumbered.the-russells.net
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Fendant View Drop Down
Admiral
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Joined: 03 November 2012
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Points: 1671 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 25 September 2020 at 05:34
Sorry Peter, I just saw that your boat is from 2008. Afaik the changed when they went fromm370 to 375.
Frank
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