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Old 28-07-2013, 11:31   #1
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Adding water system to my commercial fishing boat.

Hello all, I am about to add water systems to my commercial fishing boat. It has nothing at this point and cabin is unfinished on the inside. Fair bit of free space so I can do most anything except the head area is limited to only a small toilet. Shower can be set up on back deck.
37ft long x 16ft wide.
No generator at this time, but that can change. 12 vdc power at this time.
1. What water tank size is needed for 2 wks / 4 people?
2. Any preferred hardware brandsClick image for larger version

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Old 02-08-2013, 00:30   #2
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Re: Adding water system to my commercial fishing boat.

Not much on looks, but at least it gives some ideals. Now, how big a holding tank do I need for 4 people, two weeks?
The head could be better looking. It looks like the old one I took out years ago that just let it go overboard.Click image for larger version

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Old 02-08-2013, 01:31   #3
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Re: Adding water system to my commercial fishing boat.

For a holding tank I would estimate a minimum of one gallon per person per day.

The water tank size would depend on how careful you are with water. I have gone 45 days with 3 people and a 75 gallon tank and had water left over but we did have a lot of bottled water for drinking to supplement that. We would take salt water showers and rinse with a few cups of fresh. Same for dish washing. All depends on how frugal you want to be with the water but the bare minimum for drinking and cooking I use the same rule of thumb, gallon per day per person.
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Old 02-08-2013, 01:36   #4
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Re: Adding water system to my commercial fishing boat.

thanks, a gallon per day / per person sounds like a good rule to go by.
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Old 02-08-2013, 05:37   #5
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Re: Adding water system to my commercial fishing boat.

i would also fit a manually operated hand pump at the galley sink for cooking,great as a back up,and for fresh water conservation.

the problem with pressurised systems is crew are not allways conservative,a tap left on will empty your tank in no time at all!

a salt water foot pump for washing dishes at sea will also greatly increase your fresh water conservation.
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Old 02-08-2013, 13:06   #6
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Re: Adding water system to my commercial fishing boat.

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i would also fit a manually operated hand pump at the galley sink for cooking,great as a back up,and for fresh water conservation.

the problem with pressurised systems is crew are not allways conservative,a tap left on will empty your tank in no time at all!

a salt water foot pump for washing dishes at sea will also greatly increase your fresh water conservation.
Very good points and I will do just that. I had not thought about using saltwater for first cleaning then fresh water cleaning. I have done this before and it does work well. Again, thanks.
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Old 02-08-2013, 15:02   #7
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Re: Adding water system to my commercial fishing boat.

How long do you plan on being on the boat? You come to the dock or a tender every day or two depending if they have back to back openers. I used to carry a couple of those 2.5 gallon jugs of drinking water and I had a 20 gallon fresh water tank that I used for washing dishes, what few I had, I could always fill that up at the tender or on the dock where I delivered. I used those solar showers to wash the stink off, if I wanted it really warm I would heat up some water in the teapot and pour it in with the solar heated water. As far as a toilet goes, the bucket works fine, just wave to the neighbors as they go by.
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Old 02-08-2013, 16:02   #8
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Re: Adding water system to my commercial fishing boat.

This is a commercial fishing boat and it's water needs have to be looked at in an entirely different light. The fresh water needs on one of these is entirely different than a pleasure yacht. Ice, equipment, and gear that need constant attention alone will bring the daily uses far above most cruisers needs.
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Old 02-08-2013, 16:59   #9
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Re: Adding water system to my commercial fishing boat.

I used to keep a 50 quart cooler full of ice for my food, no refrigeration.
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Old 02-08-2013, 19:27   #10
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Re: Adding water system to my commercial fishing boat.

Yes, captain58sailin, that is how we do things up till now.
I am looking at making the boat into home away from home for fun trips like over to the sound tripes with the wife and may do some hunter transport business (using this boat as base camp for hunters - faster boat to run to port and back).
Anyway, I hope to quite working so much and start playing with the boat.
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Old 03-08-2013, 04:31   #11
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Re: Adding water system to my commercial fishing boat.

Tellie is absolutely right... THIS IS NOT A CRUISING VESSEL, it is a Alaskan Fishing boat and estimating water use of 1 gallon per day per man is not going to keep you out 2 weeks.

I assume you are doing this on a budget and can't afford a watermaker at this point.

You should talk to the other Fishing Captains working your area and see what their water consumption rates are, because very few of the people on this forum can answer your question...

I would guess somewhere around 3-5 gallons per day per man would keep you fishing. The variables will be cooking, washing and of course cleaning. Some can be mitigated with Seawater use, but others like cooking and showering can't.
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Old 03-08-2013, 05:02   #12
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Re: Adding water system to my commercial fishing boat.

polyurea, sorry, that occurred to me after I posted, and slapped my ignorant forehead for you. Yeah you will need more if you are camping out and living on the vessel across the bay. As far as individual consumption varies greatly between individuals it would be difficult to determine how much you would need. If you are going for an integral tank, then I would look for a place where it would best fit and build it in. Hopefully center line amidships. If I could do that, I would be looking at a tank of at least 50 USG. I think I would rig up a way to catch rain water, that would drain it directly into your tank, with either an overflow rigged for overboard or a shut off valve, so that you don't overfill the tank.
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Old 03-08-2013, 12:24   #13
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Re: Adding water system to my commercial fishing boat.

Quote:
Originally Posted by captain58sailin View Post
polyurea, sorry, that occurred to me after I posted, and slapped my ignorant forehead for you. Yeah you will need more if you are camping out and living on the vessel across the bay. As far as individual consumption varies greatly between individuals it would be difficult to determine how much you would need. If you are going for an integral tank, then I would look for a place where it would best fit and build it in. Hopefully center line amidships. If I could do that, I would be looking at a tank of at least 50 USG. I think I would rig up a way to catch rain water, that would drain it directly into your tank, with either an overflow rigged for overboard or a shut off valve, so that you don't overfill the tank.
All good points. I am luck to be able to do what ever I wish as far as tankage. I often load 2000 lbs of fish on one side tank/hold of boat and almost can not tell a angle of the boat. there is a minor lean but very hard to tell.
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Old 01-12-2014, 20:12   #14
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Re: Adding water system to my commercial fishing boat.

Hi,
Re your water issues, there is now a totally portable water desal unit available that people on this forum have been talking about.Check out rainmandesal.com I happen to be the North American distributor. If I can be of any help you can contact me on +1 949 209 7777.
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Old 08-01-2015, 18:37   #15
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Re: Adding water system to my commercial fishing boat.

Very nice boat indeed
The head that you have is very simple and going to give you at least 5 years there is simpler ways of doing it but you are good to go.
Never Ever put a manual head on your boat they are nothing but trouble , spare parts stop valves plungers gaskets O- rings plus your and other peoples poo!
Buy a spare pump and when you have a problem 4 screws, Bingo and you are done


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