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Where are freshwater tanks on 50?!?!

Discussion in 'Post Yacht' started by Alzira II, Nov 21, 2020.

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  1. Alzira II

    Alzira II Member

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    I have looked everywhere and I cant seem to find all of the FW tanks on my 2000 50'. There is one in the companionway with a gauge in the top of it and I have one under the port master bed with no gauge. I haver the forward or aft gauge in the electrical panel with the toggle switch between tanks. My confusion is there is no gauge in the tank under master. So where is the next tank? I think there is 100 gals in companionway and 50 under bed so it makes sense I cant find the other. Only one of my gauges are reading.

    thanks for any help.
  2. Alzira II

    Alzira II Member

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    Slight update, I see there are 3 lines going to the tank under master bed. 2 tap in on the top part of the tank and one connects below. I am currently filling and as the tank fills I see no water falling from either of top 2 hoses. So it is clearly beginning to fill once the lower forward tank fills then the aft tanks fill. As the water is entering from bottom of tank I would presume it is feeding from another tank at the same height. It would appear this line goes straight towards middle of boat to area under floor at galley level. I have no hatches for the area in the hallway next to the galley. it would make sense there could be a tank under there but I seem to have zero access. Any thoughts fellow 50 owners?
  3. NYCAP123

    NYCAP123 Senior Member

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    Call the CG and report drugs on board. They'll find it. They love boats with inaccessible voids.:rolleyes:
  4. Beau

    Beau Senior Member

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    Yes under and behind the master bunk. One tank fills and then the other. Empties in reverse. You'll notice that sequence on your tank indicators on the electric panel. I think the higher tank in under the rear facing salon seat that has no easy access. If I remember correctly, we hold 240 gall0ns. Good for 2-3 nights on the hook with 2 children, 2 adults and no short showers. On my 21st season of filling those things.

    On mine, the drain valve is on the forward tank, forward face with a drain valve accessed thru a small square floor hatch located on the keel side of the bed.
    Last edited: Nov 21, 2020
  5. Capt J

    Capt J Senior Member

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    The gauge worked before, those are the two tanks, sender is probably under salon bench seat for top tank. It fills from the bottom tank and then up to the top tank once the bottom is completely full, are you sure you're not letting it fill long enough before shutting the water off? Check the back of the gauge and toggle switch, it's possible a wire came off as well.
  6. Beau

    Beau Senior Member

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    At least one of those water lines running to/from the tank is an overflow running somewhere, which in mine spills into the cockpit from under the forward port coaming where it is strapped to the underside. Its just a 3/8 hose end. If I had to guess about those 3 lines, one is a fill line, one is a tank to tank cross over and one is an overflow.

    There is a toggle switch at the panel for switching between the tank gauges.
    Last edited: Nov 21, 2020
  7. NYCAP123

    NYCAP123 Senior Member

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    Actually that 3/8 hose should be a vent and overflowing should go overboard.
  8. Alzira II

    Alzira II Member

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    Thank you beau, I didn’t think to check under salon bench seat. I didn’t think that opened up. Still curious what is under the floor in the hallway by galley.
  9. Alzira II

    Alzira II Member

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    Yeah, it has quit on me. I overfilled the tanks and since then it quit. I fill till the overfill spills water on the cockpit. Seem like you have the be crazy careful to fill slowly.
  10. Alzira II

    Alzira II Member

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    I just took some measurements underneath the seating in the salon near where the headboard for the port master layout is. That is the area where the headboard ends so the bottom underside of the bench seat is actually just the void that creates the master bedroom. this is leading me back to the hallway possibility which bewilders me because again I can’t figure out how to get access to it. maybe I should remove the first 2 stairs down from salon. If I can find the sending unit I’m sure I can help somebody out in the future documenting it here.
  11. Capt J

    Capt J Senior Member

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    Forward fuel tank, rear of that tank is in the engine room.
  12. Beau

    Beau Senior Member

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    It generally is a vent, but if you happen to leave the hose running when your distracted it becomes an overflow. I suspect its in the cockpit to give you quick notice that you left the fill hose on. I would not generally fill my tanks till that hose runs since it probably gets a little crappy operating as a vent and wouldn't want to purposely add that to my drinking water.
    Last edited: Nov 22, 2020
  13. Beau

    Beau Senior Member

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    Yeah, I've never seen the second water either, but I suspect the second water tank is above and behind the forward under that seat. But I don't know that. My galley stairs pull away from the bulkhead. I've never noticed an access unless its under the rug??
    Last edited: Nov 22, 2020
  14. Beau

    Beau Senior Member

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    Be careful that you do not "explode" the tank under the master - your fill hose puts more water in than that vent/overflow lets out.