Forums General Discussion Sea Chest

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    • #68759
      Anonymous

      I was spending some time reading older posts here on the forum and in March of 2008 there was a discussion of the sea chest and raw water manifolds etc. I’m curious as to exactly what the sea chest was and where it was located in the original construction. Is it a sort of “well” that stays full of raw water to be distributed? I know the boat I’m buying has a manifold (not sure of size or volume yet) and a dedicated Groco ss strainer along with outer hull strainer also. The engine and V-drive cooling has it’s own strainer.

    • #79900
      Tor
      Participant

      Ken,

      Yes, a sea chest or seawater intake manifold is a container with its own
      intake thru-hull, from which seawater is distributed to various devices that
      use it – toilet, galley sink foot pump, watermaker, deckwash pump… even a
      bilge washdown hose if you want one. To my knowledge, Pearson did not build
      in sea chests, but could have by special order. Very few builders do that. I
      don’t know why; it’s a smart idea. Be thankful your boat already has one,
      with its own Groco strainer and thru-hull screen, as it should. I had to
      design and build Silverheels’ seawater intake manifold from scratch (photos
      attached), but am delighted with the results. And I agree that the engine
      should have its own separate intake and strainer.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79901
      Anonymous

      Thanks Tor, what was throwing me off reading the old posts was I think you mentioning a fiberglass cover and someone else thought the wall thickness of this “sea chest” would bulge and weaken. Something like that. Made me think of a box of some sort.

      It’s driving me crazy here being an 8 hr drive from the new boat that’s not even really mine yet. Between this forum and the owners detailed e-mails I hope to have no mysteries when I do move aboard…ya right!!!!

    • #79902
      john stevenson
      Participant

      AFAIK, neither a sea chest nor a manifold were original equipment on the
      424s. If there is one on the 424 you are buying it was likely put in by a
      PO.
      A sea chest and a manifold serve the same basic purpose – provide sea water
      distribution to multiple systems from a single thru-hull. The sea chest is
      a tank of a gallon or more capacity that handles surge loads, when more
      than one system is drawing water at the same time. This allows the sea
      chest to be served by a thru-hull of less total capacity than the sum of
      the attached systems. That assumes at least one of the loads is not
      continuous (e.g.,, toilet flush, galley sea water pump, etc.). With a
      manifold the thru hull must be able to provide the maximum possible demand
      from all systems otherwise one of the system may be starved and not receive
      its full demand.
      Here is a description of the manifolds I put into Sarah 10 years ago:
      http://www.svsarah.com/Sarah/ewUpgrade2003Haulout.htm.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 5:04 AM, Page Two wrote:

      I was spending some time reading older posts here on the forum and in
      March of 2008 there was a discussion of the sea chest and raw water
      manifolds etc. I’m curious as to exactly what the sea chest was and where
      it was located in the original construction. Is it a sort of “well” that
      stays full of raw water to be distributed? I know the boat I’m buying has a
      manifold (not sure of size or volume yet) and a dedicated Groco ss strainer
      along with outer hull strainer also. The engine and V-drive cooling has
      it’s own strainer.


      Writing a New Chapter Page by Page in an Old Book.

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      maillist mailing list

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    • #79903
      Anonymous

      Tor, good morning. I read this post about sea chests. I don’t have one and like the other Pearson owners my seawater sink foot pump and the heads all have separate intakes. I am not arguing I just want to understand. Why is a Seachest better?

      Sent from my iPhone

      On Jul 21, 2013, at 8:50 AM, “Silverheels” wrote:

      Quote:
      Ken,

      Yes, a sea chest or seawater intake manifold is a container with its own
      intake thru-hull, from which seawater is distributed to various devices that
      use it – toilet, galley sink foot pump, watermaker, deckwash pump… even a
      bilge washdown hose if you want one. To my knowledge, Pearson did not build
      in sea chests, but could have by special order. Very few builders do that. I
      don’t know why; it’s a smart idea. Be thankful your boat already has one,
      with its own Groco strainer and thru-hull screen, as it should. I had to
      design and build Silverheels’ seawater intake manifold from scratch (photos
      attached), but am delighted with the results. And I agree that the engine
      should have its own separate intake and strainer.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79904
      pma_foyl
      Participant

      Hi Everyone,
       
      So I’m a new P424 owner. I’ve actually owned one before and been a part of the maillist, but since selling our last 424, I’ve mostly been a “list stalker”. You’ll probably get a lot of questions from me in the coming months as I try to figure out this new boat and all the systems.
       
      I’m currently prepping to deliver the boat from the present location (Anacortes, WA) to Seattle. Hopefully it will be an easy 2-day trip, but of course, I’m overwhelmed with pre-travel work, new boat-owner anxiety and uncertainty with some of the PO’s systems.
       
      Today, I actually have a couple easy questions for the group (or hopefully easy). Can anyone provide some information regarding the “fuel gauge arrow” (on the old original tank-mounted gauge you look at through the cockpit sole). Which way should it point, if the tank is full? If it’s empty? The glass is so foggy that I can see the needle, but I can’t make out any other markings (ie. F or E). The broker says he knows, but I’m alittle less than confident with his answer.
       
      Another fuel question: do you think I require fuel polishing if the diesel has been sitting for 8 months? Again, the broker thinks it’s fine. The Racor looks very clear at this point (from running during sea trail), but once that tank sloshes around, who knows. I’d love some feedback. The last thing I want is a clogged filter/failing engine while transiting Deception Pass.
       
      It’s a drop-in Racor (I’ve never had this before). If I had to replace it, can I accomplish it underway? Can I replace it without bleeding the lines (ie. putting new element in and topping up the filter canister with diesel)? 

      Any input or suggestions would be greatly appreciated.

      Thank you,

      P

      Paul
      Talisman, Seattle WA
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    • #79905
      john stevenson
      Participant

      Paul,
      I can’t provide any advise on the tank gauge. I replaced my tank and guage
      several years ago, and the gauge orientation on my boat is likely different
      than yours. Actually, I would guess the gauge orientation varies from 424
      to 424, even those with the original tank.
      IMO eight months is not really that long for fuel to sit, although your
      boat has been sitting in a rain forest. Fuel polishing is not a bad idea,
      but the Racor filters can be replaced underway without problems. Just keep
      a small jug of diesel fuel handy to re-fill the filter bowl after changing
      the filter to avoid having to bleed the fuel lines. Take a lot of spare
      filter cartridges with you.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 9:45 AM, Paul Audi wrote:

      Hi Everyone,

      So I’m a new P424 owner. I’ve actually owned one before and been a part of
      the maillist, but since selling our last 424, I’ve mostly been a “list
      stalker”. You’ll probably get a lot of questions from me in the coming
      months as I try to figure out this new boat and all the systems.

      I’m currently prepping to deliver the boat from the present location
      (Anacortes, WA) to Seattle. Hopefully it will be an easy 2-day trip, but of
      course, I’m overwhelmed with pre-travel work, new boat-owner anxiety and
      uncertainty with some of the PO’s systems.

      Today, I actually have a couple easy questions for the group (or hopefully
      easy). Can anyone provide some information regarding the “fuel gauge arrow”
      (on the old original tank-mounted gauge you look at through the cockpit
      sole). Which way should it point, if the tank is full? If it’s empty? The
      glass is so foggy that I can see the needle, but I can’t make out any other
      markings (ie. F or E). The broker says he knows, but I’m alittle less than
      confident with his answer.

      Another fuel question: do you think I require fuel polishing if the diesel
      has been sitting for 8 months? Again, the broker thinks it’s fine. The
      Racor looks very clear at this point (from running during sea trail), but
      once that tank sloshes around, who knows. I’d love some feedback. The last
      thing I want is a clogged filter/failing engine while transiting Deception
      Pass.

      It’s a drop-in Racor (I’ve never had this before). If I had to replace it,
      can I accomplish it underway? Can I replace it without bleeding the lines
      (ie. putting new element in and topping up the filter canister with
      diesel)?

      Any input or suggestions would be greatly appreciated.

      Thank you,

      P

      Paul
      Talisman, Seattle WA
      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

      _______________________________________________
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    • #79906
      unabated
      Participant

      I’ve never looked at my fuel tank gauge. I strictly go on engine hours. Fill up the tank, calculate 1 gallon for every hour of engine. You’ll probably only use about .8 gallons per engine hour, so that gives you a good 20% safety factor. Unless of course you run it wide-open throttle.
      Alan
      Unabated

      Sent from my iPhone

      On Jul 21, 2013, at 10:06 AM, John Stevenson wrote:

      Paul,
      I can’t provide any advise on the tank gauge. I replaced my tank and guage
      several years ago, and the gauge orientation on my boat is likely different
      than yours. Actually, I would guess the gauge orientation varies from 424
      to 424, even those with the original tank.
      IMO eight months is not really that long for fuel to sit, although your
      boat has been sitting in a rain forest. Fuel polishing is not a bad idea,
      but the Racor filters can be replaced underway without problems. Just keep
      a small jug of diesel fuel handy to re-fill the filter bowl after changing
      the filter to avoid having to bleed the fuel lines. Take a lot of spare
      filter cartridges with you.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 9:45 AM, Paul Audi wrote:

      Hi Everyone,

      So I’m a new P424 owner. I’ve actually owned one before and been a part of
      the maillist, but since selling our last 424, I’ve mostly been a “list
      stalker”. You’ll probably get a lot of questions from me in the coming
      months as I try to figure out this new boat and all the systems.

      I’m currently prepping to deliver the boat from the present location
      (Anacortes, WA) to Seattle. Hopefully it will be an easy 2-day trip, but of
      course, I’m overwhelmed with pre-travel work, new boat-owner anxiety and
      uncertainty with some of the PO’s systems.

      Today, I actually have a couple easy questions for the group (or hopefully
      easy). Can anyone provide some information regarding the “fuel gauge arrow”
      (on the old original tank-mounted gauge you look at through the cockpit
      sole). Which way should it point, if the tank is full? If it’s empty? The
      glass is so foggy that I can see the needle, but I can’t make out any other
      markings (ie. F or E). The broker says he knows, but I’m alittle less than
      confident with his answer.

      Another fuel question: do you think I require fuel polishing if the diesel
      has been sitting for 8 months? Again, the broker thinks it’s fine. The
      Racor looks very clear at this point (from running during sea trail), but
      once that tank sloshes around, who knows. I’d love some feedback. The last
      thing I want is a clogged filter/failing engine while transiting Deception
      Pass.

      It’s a drop-in Racor (I’ve never had this before). If I had to replace it,
      can I accomplish it underway? Can I replace it without bleeding the lines
      (ie. putting new element in and topping up the filter canister with
      diesel)?

      Any input or suggestions would be greatly appreciated.

      Thank you,

      P

      Paul
      Talisman, Seattle WA
      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

      _______________________________________________
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      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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    • #79907
      pma_foyl
      Participant

      Thanks John,
       
      Great advise. I appreciate the input.
       
      Best,
       
      P

      Paul Michael Audi
      m 213.610.5533

      ________________________________

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    • #79909
      john stevenson
      Participant

      Paul,
      Here’s a simple, if pricey, addition you can make to your Racor to detect
      filter clogging before it shuts down your engine:
      http://www.svsarah.com/Sarah/ewUpradeMechanical.htm#Fuel_Filter_Guage
      This is a vacuum gauge that replaces the T screw that secures the cover.
      You can check this periodically underway and change the filter when it
      starts to show a problem. I have one, but I must confess it has never
      shown a clogged condition as I change my filters on a regular basis.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 10:13 AM, Alan wrote:

      I’ve never looked at my fuel tank gauge. I strictly go on engine hours.
      Fill up the tank, calculate 1 gallon for every hour of engine. You’ll
      probably only use about .8 gallons per engine hour, so that gives you a
      good 20% safety factor. Unless of course you run it wide-open throttle.
      Alan
      Unabated

      Sent from my iPhone

      On Jul 21, 2013, at 10:06 AM, John Stevenson
      wrote:

      Paul,
      I can’t provide any advise on the tank gauge. I replaced my tank and

      guage

      several years ago, and the gauge orientation on my boat is likely

      different

      than yours. Actually, I would guess the gauge orientation varies from

      424

      to 424, even those with the original tank.
      IMO eight months is not really that long for fuel to sit, although your
      boat has been sitting in a rain forest. Fuel polishing is not a bad

      idea,

      but the Racor filters can be replaced underway without problems. Just

      keep

      a small jug of diesel fuel handy to re-fill the filter bowl after

      changing

      the filter to avoid having to bleed the fuel lines. Take a lot of spare
      filter cartridges with you.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 9:45 AM, Paul Audi wrote:

      Hi Everyone,

      So I’m a new P424 owner. I’ve actually owned one before and been a part

      of

      the maillist, but since selling our last 424, I’ve mostly been a “list
      stalker”. You’ll probably get a lot of questions from me in the coming
      months as I try to figure out this new boat and all the systems.

      I’m currently prepping to deliver the boat from the present location
      (Anacortes, WA) to Seattle. Hopefully it will be an easy 2-day trip,

      but of

      course, I’m overwhelmed with pre-travel work, new boat-owner anxiety and
      uncertainty with some of the PO’s systems.

      Today, I actually have a couple easy questions for the group (or

      hopefully

      easy). Can anyone provide some information regarding the “fuel gauge

      arrow”

      (on the old original tank-mounted gauge you look at through the cockpit
      sole). Which way should it point, if the tank is full? If it’s empty?

      The

      glass is so foggy that I can see the needle, but I can’t make out any

      other

      markings (ie. F or E). The broker says he knows, but I’m alittle less

      than

      confident with his answer.

      Another fuel question: do you think I require fuel polishing if the

      diesel

      has been sitting for 8 months? Again, the broker thinks it’s fine. The
      Racor looks very clear at this point (from running during sea trail),

      but

      once that tank sloshes around, who knows. I’d love some feedback. The

      last

      thing I want is a clogged filter/failing engine while transiting

      Deception

      Pass.

      It’s a drop-in Racor (I’ve never had this before). If I had to replace

      it,

      can I accomplish it underway? Can I replace it without bleeding the

      lines

      (ie. putting new element in and topping up the filter canister with
      diesel)?

      Any input or suggestions would be greatly appreciated.

      Thank you,

      P

      Paul
      Talisman, Seattle WA
      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

      _______________________________________________
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    • #79908
      Anonymous

      Thanks John, I couldn’t open your link but I think I get it. There was mentioning back in the original discussion about using 6″ PVC pipe and that would certainly have the volume to protect from the surge load. The present owner of my future boat is an engineer and has gone through the boat over the last 14 years, It was my #1 reason to even buy a boat with so many systems. I’ve been very KISS in my past. Not sure why he located it back under the port berth next to the engine, seems distant, but I have faith it’s done properly.
      Thanks again,
      Ken

      @john stevenson wrote:

      AFAIK, neither a sea chest nor a manifold were original equipment on the
      424s. If there is one on the 424 you are buying it was likely put in by a
      PO.
      A sea chest and a manifold serve the same basic purpose – provide sea water
      distribution to multiple systems from a single thru-hull. The sea chest is
      a tank of a gallon or more capacity that handles surge loads, when more
      than one system is drawing water at the same time. This allows the sea
      chest to be served by a thru-hull of less total capacity than the sum of
      the attached systems. That assumes at least one of the loads is not
      continuous (e.g.,, toilet flush, galley sea water pump, etc.). With a
      manifold the thru hull must be able to provide the maximum possible demand
      from all systems otherwise one of the system may be starved and not receive
      its full demand.
      Here is a description of the manifolds I put into Sarah 10 years ago:
      http://www.svsarah.com/Sarah/ewUpgrade2003Haulout.htm.

      Regards,
      John Stevenson
      http://www.svsarah.com


      Writing a New Chapter Page by Page in an Old Book.

      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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    • #79910
      madsailor
      Moderator

      Hi Paul,

      Welcome back! Ok, for the fuel gauge: You can purchase a replacement puck
      that fits in the top of the unit. All the whole unit is is a twisted piece
      of metal with a float that rides up it. At the top is a magnet. This is
      all sealed in the tank. At the top there is a little depression that this
      readout device sits in. I replaced mine a few years ago and I think the
      new one was like $15.00. I went to an auto parts store to get it.

      Next, you can change the racor underway but with the engine stopped. You
      have an electric fuel pump on your engine I hope so it’s self priming. If
      you don’t, then as John said have some fuel ready to top off the filter.
      Also, bring some secondary filters (on the engine).

      Polishing the fuel can’t hurt and if there’s a relatively cheap way to get
      it done it may be worth it. If not, just be prepared to change filters
      underway. Lots of filters are cheaper than polishing services.

      Bob

      On Sun, Jul 21, 2013 at 10:24 AM, John Stevenson
      wrote:

      Paul,
      Here’s a simple, if pricey, addition you can make to your Racor to detect
      filter clogging before it shuts down your engine:
      http://www.svsarah.com/Sarah/ewUpradeMechanical.htm#Fuel_Filter_Guage
      This is a vacuum gauge that replaces the T screw that secures the cover.
      You can check this periodically underway and change the filter when it
      starts to show a problem. I have one, but I must confess it has never
      shown a clogged condition as I change my filters on a regular basis.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 10:13 AM, Alan wrote:

      I’ve never looked at my fuel tank gauge. I strictly go on engine hours.
      Fill up the tank, calculate 1 gallon for every hour of engine. You’ll
      probably only use about .8 gallons per engine hour, so that gives you a
      good 20% safety factor. Unless of course you run it wide-open throttle.
      Alan
      Unabated

      Sent from my iPhone

      On Jul 21, 2013, at 10:06 AM, John Stevenson
      wrote:

      Paul,
      I can’t provide any advise on the tank gauge. I replaced my tank and

      guage

      several years ago, and the gauge orientation on my boat is likely

      different

      than yours. Actually, I would guess the gauge orientation varies from

      424

      to 424, even those with the original tank.
      IMO eight months is not really that long for fuel to sit, although your
      boat has been sitting in a rain forest. Fuel polishing is not a bad

      idea,

      but the Racor filters can be replaced underway without problems. Just

      keep

      a small jug of diesel fuel handy to re-fill the filter bowl after

      changing

      the filter to avoid having to bleed the fuel lines. Take a lot of

      spare

      filter cartridges with you.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 9:45 AM, Paul Audi wrote:

      Hi Everyone,

      So I’m a new P424 owner. I’ve actually owned one before and been a

      part

      of

      the maillist, but since selling our last 424, I’ve mostly been a “list
      stalker”. You’ll probably get a lot of questions from me in the coming
      months as I try to figure out this new boat and all the systems.

      I’m currently prepping to deliver the boat from the present location
      (Anacortes, WA) to Seattle. Hopefully it will be an easy 2-day trip,

      but of

      course, I’m overwhelmed with pre-travel work, new boat-owner anxiety

      and

      uncertainty with some of the PO’s systems.

      Today, I actually have a couple easy questions for the group (or

      hopefully

      easy). Can anyone provide some information regarding the “fuel gauge

      arrow”

      (on the old original tank-mounted gauge you look at through the

      cockpit

      sole). Which way should it point, if the tank is full? If it’s empty?

      The

      glass is so foggy that I can see the needle, but I can’t make out any

      other

      markings (ie. F or E). The broker says he knows, but I’m alittle less

      than

      confident with his answer.

      Another fuel question: do you think I require fuel polishing if the

      diesel

      has been sitting for 8 months? Again, the broker thinks it’s fine. The
      Racor looks very clear at this point (from running during sea trail),

      but

      once that tank sloshes around, who knows. I’d love some feedback. The

      last

      thing I want is a clogged filter/failing engine while transiting

      Deception

      Pass.

      It’s a drop-in Racor (I’ve never had this before). If I had to replace

      it,

      can I accomplish it underway? Can I replace it without bleeding the

      lines

      (ie. putting new element in and topping up the filter canister with
      diesel)?

      Any input or suggestions would be greatly appreciated.

      Thank you,

      P

      Paul
      Talisman, Seattle WA
      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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      Bob Fine
      s/v Pelican
      Pearson 424 Hull #8
      http://thesailinglife.blogspot.com
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    • #79911
      madsailor
      Moderator

      Ok. Here it is: A sea chest is either open directly to the sea or an box
      of significant size that is connected to the sea through a through hull
      valve in such a manner that it will fill and stay filled whenever the
      vessel is in the water and the valve, if installed, is open. A sea chest
      and manifold serve the same purpose: minimizing through hulls.

      There are far too many through hulls in the 424. Almost all of them are
      low flow systems, such as the head, water maker, deck washdown (at a few
      gallons a minute), and foot pump, so a 5/8″ through hull is fine for that
      even if all the systems are running. The one under the galley sink is fine
      for that. If you were running air conditioning and/or water cooled
      refrigeration you’d need a larger through hull.

      Ok, the box we were talking about way back when was the shower sump box
      that was mounted in the bilge just forward of the v-drive. Frankly it was
      useless and most owners removed it in favor of a direct overboard pump.
      The idea proposed was using that for a sea chest and was rejected because
      the walls were considered too thin to withstand the direct sea pressure
      (they probably aren’t but would you trust your vessel to ‘probably’?)

      Anyway, most of us have solved the problem with a manifold like Tor’s or
      John’s. Others have just let things be the way they are.

      I plan on hauling my boat later this summer and removing at least 7 though
      hulls. 4 deck drains, 1 sink drain in the v-berth (where I also plan on
      removing the non used sink), moving the bilge pump discharges from the side
      of the boat to the transom and teeing the shower sump to the galley sink
      drain removing the through hull for that. If I could remove more I would.

      The deck drains will elbow out to the hull just below the cove stripe. I
      know there will be black marks. Better that than failed underwater valves.

      Bob

      On Sun, Jul 21, 2013 at 10:28 AM, Page Two wrote:

      Thanks John, I couldn’t open your link but I think I get it. There was
      mentioning back in the original discussion about using 6″ PVC pipe and that
      would certainly have the volume to protect from the surge load. The
      present owner of my future boat is an engineer and has gone through the
      boat over the last 14 years, It was my #1 reason to even buy a boat with so
      many systems. I’ve been very KISS in my past. Not sure why he located it
      back under the port berth next to the engine, seems distant, but I have
      faith it’s done properly.
      Thanks again,
      Ken

      john stevenson wrote:

      AFAIK, neither a sea chest nor a manifold were original equipment on the
      424s. If there is one on the 424 you are buying it was likely put in by

      a

      PO.
      A sea chest and a manifold serve the same basic purpose – provide sea

      water

      distribution to multiple systems from a single thru-hull. The sea chest

      is

      a tank of a gallon or more capacity that handles surge loads, when more
      than one system is drawing water at the same time. This allows the sea
      chest to be served by a thru-hull of less total capacity than the sum of
      the attached systems. That assumes at least one of the loads is not
      continuous (e.g.,, toilet flush, galley sea water pump, etc.). With a
      manifold the thru hull must be able to provide the maximum possible

      demand

      from all systems otherwise one of the system may be starved and not

      receive

      its full demand.
      Here is a description of the manifolds I put into Sarah 10 years ago:
      http://www.svsarah.com/Sarah/ewUpgrade2003Haulout.htm.

      Regards,
      John Stevenson
      http://www.svsarah.com


      Writing a New Chapter Page by Page in an Old Book.

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      Writing a New Chapter Page by Page in an Old Book.

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      [/quote]


      Bob Fine
      s/v Pelican
      Pearson 424 Hull #8
      http://thesailinglife.blogspot.com
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    • #79912
      pma_foyl
      Participant

      Hi All,
       
      More questions from the noob. I apologize in advance for my likely silly questions.
       
      So my previous 424 had 50 amp shore power hook up. The new one looks like it does too (based on the input in the cockpit). But the plug on the cord looks like a 30 amp (male side; it’s even plugged into the shore outlet that is marked 30 amp). Is it possible that someone has created a hybrid cord? Is this bad?
       
      Also, I’m struggling to understand the nature of 50amp/125v versus 50amp 125/250v. Not sure which is appropriate for the P424 (though I believe it’s 50amp/125v). I’m very NON-technical, so a long electrical discussion won’t help me. Mostly, I’d just like to understand what others are using on their 424s to get shore power to their systems. Ideally, I’d like to do this as cost-effectively as possible.
       
      Could it be as simple as a pigtail adaptor at the boat input and then using a standard 30amp cord for connectivity to 30amp show power?
       
      Thank you,
       
       
      Paul
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    • #79913
      Tor
      Participant

      Thatcher,

      John just explained perfectly the difference between a sea chest and a
      seawater manifold. Since Silverheels has no big raw water consumers besides
      the engine, which has its own, dedicated thru-hull and strainer, I didn’t
      really need a sea chest. The manifold easily services this boat’s needs.

      Why having a sea chest or seawater intake manifold is better than not having
      one is because they enable you to have many less holes in the bottom of your
      boat, less thru-hulls. When I got Silverheels she had some absurd number of
      thru-hulls. Pearson just stuck them in anywhere and everywhere for each and
      every thing that needed to drain overboard. It was like Swiss cheese. Making
      an intake manifold was part of my overall campaign to reduce the number of
      these holes in the boat. Ultimately I halved the holes, from the original 18
      to 9 now. I feel that’s an improvement.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79914
      Tor
      Participant

      Ken,

      The manifold I just showed you was the final design after 2 failures. The
      first was an attempt to convert the original shower sump box that Pearson
      made, into a sea chest. That’s what you read about. I had the devil of a
      time getting the lid watertight and also had concerns about air bubbles. The
      manifold I ultimately came up with was simpler and more functional. It has
      worked without a hitch ever since.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79915
      Tor
      Participant

      Hi Paul,

      Welcome back to the Romper Room.

      My 424 had been sitting on the hard for unknown months when I bought her.
      One of the very first things I did, just before (mostly) motoring her 300
      miles up the ICW to another boat yard, was to remove and replace that foggy
      portlight in the cockpit sole so I could see through it, and pull the
      30-year-old fuel sight gauge and replace it with a new one, readily
      available from any marine store for $10 or $15. While those things were out,
      I secured a hose to a long stick with wire ties, gently lowered the end
      through the sight gauge hole to the tank’s deepest point, which is at the
      forward end of the tank, and used a hand pump to suck out about a gallon or
      so of fuel from there. To my delight it came up clean and free of water, so
      I figured (correctly, as it turned out) that it was safe to use. If it had
      come up ugly, I would probably have pumped out more until it showed clear,
      or if it looked too far gone, arranged for polishing.

      Of course, I had the advantage of a boat on the hard for a long time. Any
      water and most dirt in the fuel tank would long ago have settled to the
      deepest part of the tank. But even if your boat has been sitting in a calm
      slip for a week, I believe you’d find most if not all of the gunk settled to
      the bottom.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79916
      dhjppn
      Participant

      It is as simple as a pigtail for 50A/125V boat end to 30A shore power cord
      if you have a 30A pedestal.
      On Jul 21, 2013 10:55 AM, “Paul Audi” wrote:

      Hi All,

      More questions from the noob. I apologize in advance for my likely silly
      questions.

      So my previous 424 had 50 amp shore power hook up. The new one looks like
      it does too (based on the input in the cockpit). But the plug on the cord
      looks like a 30 amp (male side; it’s even plugged into the shore outlet
      that is marked 30 amp). Is it possible that someone has created a hybrid
      cord? Is this bad?

      Also, I’m struggling to understand the nature of 50amp/125v versus 50amp
      125/250v. Not sure which is appropriate for the P424 (though I believe it’s
      50amp/125v). I’m very NON-technical, so a long electrical discussion won’t
      help me. Mostly, I’d just like to understand what others are using on their
      424s to get shore power to their systems. Ideally, I’d like to do this as
      cost-effectively as possible.

      Could it be as simple as a pigtail adaptor at the boat input and then
      using a standard 30amp cord for connectivity to 30amp show power?

      Thank you,

      Paul
      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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    • #79917
      john stevenson
      Participant

      Paul,
      I think most of the 424s were delivered with a 50A main breaker on the
      electrical panel, but I’m not sure what type of deck receptacle was
      originally installed. My boat has a 30A receptacle, but I think that was
      installed by the PO. So I use a 30A cord for dockside hookup. I have a
      50A adapter when tied to docks that do not provide 30A service (many on the
      AICW). Sounds like the cord on your boat was made up to allow for the
      opposite condition – only 30A service on the dock. If the marina does not
      meter the electrical service at each slip, they normally charge a fixed
      rate for the service. If you are hooked to a 50A dock receptacle that
      fixed charge may be twice that if you are hooked to a 30A receptacle. One
      other reason the PO may have made up that cord.
      Unless your boat has been re-wired to accept 250VAC, everything on board is
      125VAC. I have an isolation transformer I used in Europe to step down the
      standard 240VAC service there to 120VAC, but that is not necessary in the
      US. That transformer also has a 30A breaker so I am limited to 30A for all
      systems on board. That still allows me run A/C, refrigeration and a hot
      water heater simultaneously. If I want to use my electric tea kettle I
      have to turn off the water heater or the A/C. During winter, in colder
      climates than Florida, I do a lot more breaker fiddling to allow for space
      heaters.

      If you have no experience working with AC circuits on a boat, I suggest
      you get a qualified marine electrician to go over the circuits and document
      what you have. If your PO is an engineer, maybe he has already done that
      for you. Don’t count on the schematics provided by Pearson, they are
      probably way out of date.

      Regards,
      John Stevenson
      http://www.svsarah.com

      On Sun, Jul 21, 2013 at 11:54 AM, Paul Audi wrote:

      Hi All,

      More questions from the noob. I apologize in advance for my likely silly
      questions.

      So my previous 424 had 50 amp shore power hook up. The new one looks like
      it does too (based on the input in the cockpit). But the plug on the cord
      looks like a 30 amp (male side; it’s even plugged into the shore outlet
      that is marked 30 amp). Is it possible that someone has created a hybrid
      cord? Is this bad?

      Also, I’m struggling to understand the nature of 50amp/125v versus 50amp
      125/250v. Not sure which is appropriate for the P424 (though I believe it’s
      50amp/125v). I’m very NON-technical, so a long electrical discussion won’t
      help me. Mostly, I’d just like to understand what others are using on their
      424s to get shore power to their systems. Ideally, I’d like to do this as
      cost-effectively as possible.

      Could it be as simple as a pigtail adaptor at the boat input and then
      using a standard 30amp cord for connectivity to 30amp show power?

      Thank you,

      Paul
      _______________________________________________
      maillist mailing list

      https://pearson424.org/mailman/listinfo/maillist_pearson424.org

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      Post generated from Pearson424 Forum using Mail2Forum

    • #79918
      Anonymous

      Thank you!

      Sent from my iPhone

      On Jul 21, 2013, at 11:55 AM, “Silverheels” wrote:

      Quote:
      Thatcher,

      John just explained perfectly the difference between a sea chest and a
      seawater manifold. Since Silverheels has no big raw water consumers besides
      the engine, which has its own, dedicated thru-hull and strainer, I didn’t
      really need a sea chest. The manifold easily services this boat’s needs.

      Why having a sea chest or seawater intake manifold is better than not having
      one is because they enable you to have many less holes in the bottom of your
      boat, less thru-hulls. When I got Silverheels she had some absurd number of
      thru-hulls. Pearson just stuck them in anywhere and everywhere for each and
      every thing that needed to drain overboard. It was like Swiss cheese. Making
      an intake manifold was part of my overall campaign to reduce the number of
      these holes in the boat. Ultimately I halved the holes, from the original 18
      to 9 now. I feel that’s an improvement.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79920
      madsailor
      Moderator

      Terrific idea, Tor!

      Bob

      On Sun, Jul 21, 2013 at 12:28 PM, Silverheels wrote:

      Quote:
      Hi Paul,

      Welcome back to the Romper Room.

      My 424 had been sitting on the hard for unknown months when I bought her.
      One of the very first things I did, just before (mostly) motoring her 300
      miles up the ICW to another boat yard, was to remove and replace that foggy
      portlight in the cockpit sole so I could see through it, and pull the
      30-year-old fuel sight gauge and replace it with a new one, readily
      available from any marine store for $10 or $15. While those things were
      out,
      I secured a hose to a long stick with wire ties, gently lowered the end
      through the sight gauge hole to the tank’s deepest point, which is at the
      forward end of the tank, and used a hand pump to suck out about a gallon or
      so of fuel from there. To my delight it came up clean and free of water, so
      I figured (correctly, as it turned out) that it was safe to use. If it had
      come up ugly, I would probably have pumped out more until it showed clear,
      or if it looked too far gone, arranged for polishing.

      Of course, I had the advantage of a boat on the hard for a long time. Any
      water and most dirt in the fuel tank would long ago have settled to the
      deepest part of the tank. But even if your boat has been sitting in a calm
      slip for a week, I believe you’d find most if not all of the gunk settled
      to
      the bottom.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79921
      Tor
      Participant

      Must be the rum.

      Post generated from Pearson424 Forum using Mail2Forum

    • #79923
      pma_foyl
      Participant

      Thanks Tor,
      Excellent idea. How long was your boat on the hard? I’m really hoping my tank is sludge-free ( like yours).
      Best,

      Paul

      Sent from my iPad

      On Jul 21, 2013, at 1:23 PM, Robert Fine wrote:

      Quote:
      Terrific idea, Tor!

      Bob

      On Sun, Jul 21, 2013 at 12:28 PM, Silverheels wrote:

      Quote:
      Hi Paul,

      Welcome back to the Romper Room.

      My 424 had been sitting on the hard for unknown months when I bought her.
      One of the very first things I did, just before (mostly) motoring her 300
      miles up the ICW to another boat yard, was to remove and replace that foggy
      portlight in the cockpit sole so I could see through it, and pull the
      30-year-old fuel sight gauge and replace it with a new one, readily
      available from any marine store for $10 or $15. While those things were
      out,
      I secured a hose to a long stick with wire ties, gently lowered the end
      through the sight gauge hole to the tank’s deepest point, which is at the
      forward end of the tank, and used a hand pump to suck out about a gallon or
      so of fuel from there. To my delight it came up clean and free of water, so
      I figured (correctly, as it turned out) that it was safe to use. If it had
      come up ugly, I would probably have pumped out more until it showed clear,
      or if it looked too far gone, arranged for polishing.

      Of course, I had the advantage of a boat on the hard for a long time. Any
      water and most dirt in the fuel tank would long ago have settled to the
      deepest part of the tank. But even if your boat has been sitting in a calm
      slip for a week, I believe you’d find most if not all of the gunk settled
      to
      the bottom.

      Tor


      Silverheels, P-424 #17
      http://www.silverheels.us


      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79925
      Tor
      Participant

      My 424 had been sitting on the hard for many months, but not years, before I
      bought her.

      Tor

      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

    • #79927
      Tor
      Participant

      My 424 had been sitting on the hard for many months, but not years, before I
      bought her.

      Tor

      Quote:

      Original Message


      Post generated from Pearson424 Forum using Mail2Forum

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