manual bilge pump on top of automatic

Discussion in 'Boat Design' started by Cmw505, Aug 8, 2019.

  1. Cmw505
    Joined: Jul 2019
    Posts: 36
    Likes: 1, Points: 8
    Location: USA

    Cmw505 Junior Member

    This a good idea? i do intend to travel the open sea on a schooner i'm designing(56ft). Would it be a bad idea to add a manual pump on top of automatic ones? thanks.
  2. Blueknarr
    Joined: Aug 2017
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    Location: Colorado

    Blueknarr Senior Member

    An extra safety device is rarely a bad idea.
  3. fishwics
    Joined: Mar 2004
    Posts: 33
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    Location: UK

    fishwics Quiet member

    Do you mean so the two act in series i.e. the output from the automatic feeds the input to the manual one?
    That might mean if the automatic one clogged, you lost the use of the manual one as well.
  4. Magnus W
    Joined: Nov 2017
    Posts: 143
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    Location: Sweden

    Magnus W Senior Member

    What exactly means ”on top”?
    If referreing to actual height then the manual should be positioned lower.
    If you mean in parallel then yes it’s a very good idea.
  5. Cmw505
    Joined: Jul 2019
    Posts: 36
    Likes: 1, Points: 8
    Location: USA

    Cmw505 Junior Member

    i mean like adding a manual pump on top of automatic in case of failure. Is there some things i need to watch out for?

  6. portacruise
    Joined: Jun 2009
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    Location: USA

    portacruise Senior Member

    Are there manual pumps within the range of human power and endurance sized so they can match the automatic pump flow rate for such a large vessel? Or is it just a case of adding something that exceeds the use of a cup or bucket for bailing?
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