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10 Simple Steps to Replacing the Water Tank on Our Endeavour 37 Sailboat

Going into this whole boat purchasing process, we knew our 100-gallon water tank would need to be replaced. Sooner than later. As our marine surveyor oh-so-delicately put it…

“The water tank is suffering from corrosion.”

That’s a nice way of saying, it has holes. And last time I checked, I’m pretty sure water + holes = not good.

However when we were boat shopping, we also knew that the water tank on a 1982 Endeavour 37 had decent access, as compared to fuel tanks and water tanks on similar boats. Luckily, the fuel tank had already been replaced by the previous owner (one of the items on our boat shopping priority list).

So, roughly two months post-purchase, Jereme took on this fun little DIY project.

Side note, how much does the water tank look like a coffin?!  Right?

Here’s the “simple” 10-step plan of attack… 😉

Step 1. Empty water tank and remove hoses off existing tank. Check. Emptying the tank might have been the easiest part. Although we never really got all of the water out, which made the tank that much heavier to lift and move around. The 1.5-inch inlet hose and fitting were corroded, so Jereme had to cut a section of tubing off. Reattaching/resintalling the hoses should be interesting.

Step 2. Prep wiring/area for tank removal. Check. Check. However, some previous genius didn’t really give much thought to the retrofit wiring job that had wires running across the top of the tank, yet not even remotely enough slack to pull them aside in order to remove the tank.:(

Step 3. Remove existing tank. Sounds SOOO easy, right?  WRONG!!!!!!!!!!!!  After a LOT of bickering and some pretty tense moments, we weaseled this 100-gallon tank out of its snug little hole, up the tiny companionway steps and into the cockpit, through the dodger, and onto the dock! Success!!! I wish I would’ve videotaped this. It was NOT fun.:(

Step 4. Clean the area our tank has resided for the past 31 years. A great job for Jereme, if I do say so myself. He rocked it.

Step 5. Remove rotten wood and other debris. Jereme again. See Step 6 in regards to why we even had rotten wood.

Step 6. Figure out why the tank area is still amassing water when the holey tank has been removed. Awesome. We have water leaking down somewhere around the head and making its way out into the bilge area where the water tank sits.  Jereme seems to think the main suspect is our overhead hatch OR possibly the port light causing the water leakage.  This in turn has rotted the wood portion of the bulkhead on the forward end of the bilge. We haven’t gotten to the bottom of this yet. The rotten wood is gone. Yay! But, we’ve now added a new project to the never-ending boat project list… “diagnose and fix the leak.”

Step 7. Find a reputable tank manufacturer.  We had a few options when it came to water tanks.

We could purchase a pre-sized plastic tank from Trionic Tanks (in Wisconsin), but would have to pay big bucks for shipping. Also with the off-the-shelf sizing options, we would have to go with a smaller, unbaffled tank.  And, ultimately would pay a higher price due to shipping from Wisconsin.  That didn’t make sense.

Also, with a tank this large, you really want it to have baffles to resist the energy of 5 ft. or so of moving water. Our old tank had two baffles. The pre-made polyethylene tanks (like the ones sold at Trionic) don’t have baffles.

So, we ultimately have chosen to go with a custom polyethylene welded tank from Dura-Weld, a company located in Lake Worth, Florida. *As of July 31st, we haven’t picked up our tank yet, but we plan to drive over to Lake Worth next week (to save on shipping costs).

The custom fabricated tank we ordered is baffled. It is plastic so it will last forever.  And Dura-Weld will install all of the custom fittings we need (1 inlet, 2 outlets, a vent, and a 6-inch beckson access hatch). We are going to replace the removable lid with a clear plastic lid to use as an indication of tank level, instead of buying a tank gauge because those tend to break and you can never really trust their readings anyhow.

Step 8. Measure & order new custom fitted tank. Simultaneously say goodbye to 900+ dollars.

Jereme wanted to maximize the tank area, all the while making the measurements as simple as possible. The more intricate and complex the tank structure, the more expensive ($$$$) the tank will cost. The existing aluminum tank was trapezoid in shape.  It narrowed from the back to the front, which would be pretty complicated to fabricate (especially out of plastic), and thus expensive.

Leave it to Mr. Engineer:)to make a spreadsheet of both the volume of a rectangular tank AND that of a trapezoidal tank, and tweak the measurements to maximize the volume.  Our new tank will be roughly 90-gallons (vs. the original 100-gallons). Ya, we know in reality we should want every drop of water that tank area can hold, but not only was this cost-savings in terms of fabricating a “less complex” new tank, but also we wanted the new tank to have a certain factor of safety  (in terms of measurement) on the sides of the tank. In other words, we didn’t want to pick up the tank and have it NOT fit the area.  That would be a major bummer. Plus, Jereme designed it an inch shorter so that it can be set atop plastic boards so that drainage from the front of the boat is able to run under the tank and make it all the way to the bilge. The original aluminum tank sat right on top of the upper bilge area and didn’t allow any water to drain from the front of the boat to the lower part of the bilge.

Step 9. Insert new tank (and hope to god the custom measurements we provided to the tank manufacturer are accurate). Coming soon! …We haven’t even picked up the tank yet.

Step 10. Reattach everything and fill with water! Boom!!!  We hope.  Stay tuned!!!

UPDATE: The new tank has been installed!!! Read about the last two steps here. 

[…] Jereme was working on the water tank replacement project, he of course needed to empty the water tank.  He thought, “what better way to drain the […]

[…] it has been a couple of weeks since our last post about the water tank (10 Simple Steps to Replacing Our Water Tank), where we had just ordered our new custom tank and were awaiting […]

Marcus NethertonOctober 19, 2013 - 9:09 pm

Looks great! We are looking at this same project next spring on our 1978 Endeavour 37, looks like you have done all the hard work for me already! Thanks I just stumbled across your site today and I really enjoy it.

Marcus
S/V Metta
1978 Endeavour 37

LahoWindOctober 20, 2013 - 2:22 am

Hey Marcus! We love our Endeavour. We’re hoping to knock out a few more projects and then get back to sailing again. We’d love for you to keep following along. Feel free to email us if you have any questions when you get to that water tank. :)

Marcus NethertonOctober 21, 2013 - 4:34 am

Thanks, I will keep in touch, I managed to replace all the ports and hatches and I am at the end of building a hard dodger for the boat. It is getting cold here in the Seattle area so that is forcing me to be content with what I have managed so far.

LahoWindOctober 21, 2013 - 11:28 am

Wow, that’s great! What brand did you use for the ports/hatches and would you use the same brand if you had to do it again? All of ours leak and need to be fixed.

Marcus NethertonOctober 22, 2013 - 2:51 am

We put in the ports from New Found Metals, we used their Tri matrix ports, which are plastic with stainless trim and dogs. I looked at using their all stainless ports but while they are great would have added considerably to the weight to the cabin house. I saw them at the boat show, but was really sold on them as they are located only about 45 mins away from us. The hatches we used are from Bomar (model BOM-N104910AX ) as theirs were the closest dimensionally to the old hatches with out a lot of modifications.

jimJanuary 30, 2014 - 3:54 pm

Hello! I have a 1982 Endeavour 37 that I’m nursing back to health. So far, my water tank is not leaking (knock on wood), but I definitely have rot at the same bulkhead/stringer/whatever. I read once that this is a common problem, stemming from poor drainage of the forward part of the hull, as you mentioned. Water comes down from the mast, anchor locker, etc. then remains forward of the bulkhead. There is a drainage hole, but it is small and gets clogged easily. I have a large bilge pump that I intend to mount in that forward hull section. Please enlighten me as to what you did to address the rotted wood you found. I’m going to try and avoid major surgery if possible, but the floor, etc. def needs new support structure in that area. Most of the floor in my boat was damaged and has been replaced by 3/4 ply with marine carpet over top, but after I address the rotted wood I want to put in a nice, teak and holly sole. I am almost finished my current project, which was to remove each port, pattern/replace the teak paneling and then reseal/replace the ports. I even had to remake several headliner panels and have replaced the lights with LED versions. Keep up the good work!

LAHOWINDJanuary 31, 2014 - 3:37 am

Hi Jim. Thanks!! Well yes there is definitely water that comes from the forward section of the boat that has created a host of problems. I don’t think the drain hole is poorly sized as I think it’s probably an inch to an ich and a half. I just think its poorly positioned and doesn’t drain all the water. Plus there is no access to this part of the boat under the floor so it’s in no mans land. So, as part of the water tank job i removed all the rotten wood and replaced it with 1×8 PVC plastic wood. Its actually used for exterior home trim like around garages. Since the rotten wood was mostly just to support the floor this PVC option worked great because its out of sight but also water proof.

Also, I am almost done with replacing all of our portlights (post about this tomorrow) and replaced teak facing, headliner, and all our lights with LED. So it looks like we are on the same page!!! Good luck.

Happy 4th of July!

Jereme and I spent Independence Day with my sister (Susan) and brother-in-law (Eric) who were in town for a few fun-filled, kid-free days! We knew we had to get them out sailing while they were here, but we really only had one day to make that happen…July 4th.

Although the forecast wasn’t looking all that amazing, we (Jereme, me, Susan, Eric, Oliver the poodle, and Toby the poodle) ventured out in the morning hoping for the best. We headed out of Gordon’s Pass in Naples and sailed along the coast of Naples. As luck would have it, a nasty squall popped up in what felt like 1.2 seconds and all hell proceeded to break loose.

It was a free-for-all, “grab the animals” kind of party. I literally passed out life jackets (wish I was joking). After about 10 minutes of crazy wind, torrential dowpours, everyone on board completey drenced, and two seriously pissed poodles, we headed back in knowing that the rest of the day would probably bring us more of the same.:(

We still managed to snap a few cute photos before and after, although no one managed to document the “squall” aftermath, and I kinda wish we had. It was pretty hilarious. All I can say is, we tried. Happy 4th of July ya’ll!

The “never-ending” boat project list.

We all have one of these. You know, those fun little “never-ending” lists of boat projects?!

If you’re a sailboat owner, or any boat owner for that matter, I’m pretty sure you have some sort of project list that you would really really really love to complete. And we’re no different, of course.  As suspected, our marine survey (during the boat buying process) produced a pretty hefty list of projects that we would need to tackle — some sooner than later — and some definitely way more important than others. None were big enough to be deal-breakers on the actual boat purchase, but let’s not lie, some will definitely be pretty big undertakings and very time consuming for us newbie sailors.

We started with a  solid list of 40 projects, ranging in complexity, skill level, price tag, etc. Somehow, it feels like as soon as we cross one off the list, another one seems to pop up.

Jereme deserves a pretty big shout-out for already having tackled a handful of these. Thankfully, he LOVES projects! And DIY.

Yup, that’s a typical engineer for ya. Lucky me!

So here’s the list as of today:

  1. Flares & flare gun
  2. Check fire extinguisher expiration date
  3. Shower curtain
  4. Float switch bilge pump
  5. Extra bilge pump under quarter-berth
  6.  Wine bottle holder affix
  7. Change boat name
  8. Registration sticker – dinghy
  9. Maroon paint for boat stripe
  10. Light bulbs
  11. Fix shelf/cabinet in head
  12. Wing nut drawer guides quarter-berth
  13. Sized rope with clasp for ladder
  14. Stereo speakers
  15. New fenders
  16. Charts — Florida/Bahamas
  17. Chafe protection for anchor lines
  18. Fix hatch latch on anchor locker
  19. Propane tanks and locker clasp
  20. Clean raw water strainer
  21. Change oil; oil filters
  22. Fiberglass 4th side of engine oil catch tank
  23. Jib sail needs restitching
  24. Genoa furling drum serviced
  25. Crack in bobstay
  26. Bow port window leak
  27. Quarter-berth port light
  28. Overhead hatch leaking
  29. Autopilot needs to be fixed
  30. Fix/replace water tank
  31. Service seacocks
  32. Spreader lights
  33. Soft spot on anchor locker
  34. Cockpit LED lights
  35. Toilet/vent for waste
  36. Fix wind instrument/tridata
  37. Enhance anchor/chain; check what exists
  38. Wax boat
  39. Oil leaks from timing gear
  40. Install solar panels, charge controller, and inverter
  41. Replace plumbing to head
  42. Fix shower sump pump
  43. Waterproof canvas top

[…] slacker mode at its finest… and didn’t even manage to cross one item off of our never-ending boat project list.  However, we DID attend one super-cute 2-year-old’s birthday party!  How cute is […]

[…] Just when we’ve wrapped up the (rather extensive) water tank project, along comes the next fun project on our never-ending boat project list. […]

[…] when we purchased the boat back in April.  So, of course we didn’t anticipate needing a boat project list line item for “waterproofing the canvas.”  Turns out, we were […]

[…] …But Jereme was kind enough to fill in the pertinent details so we could document another “checked-off” item on our good ole “never-ending” boat project list. […]

[…] in June, I posted about our seemingly never-ending list of boat projects. This was a mix of labor/time intensive (and $$$ intensive) along with some super easy-peasy boat […]

[…] needed something to fix this chafing issue.  So we added this to our boat project list early […]

[…] might remember our original boat project list from way back in June, and then our first list update in […]

[…] might recall >>our original list all the way back in June<< just a month after we had sailed the boat down from St. Pete. Boy, we have come a long […]

Sailboat Jumps!

What do you do when the sails are up, but the wind is non-existent?

…Sailboat jumps of course!

We may or may not have had a little too much fun taking turns jumping off the bow this weekend. Jer and I were joined by our good friends Chris+Heather for a Saturday sail off the coast of Naples.

A group of dolphin joined us as we headed out of Gordons Pass. I only (kinda, sorta) captured one dolphin on video (go figure), but a few of them were riding right with us just as we exited the Pass. Dolphin sightings never get old in my book.

Once out of the pass, we put up the main and jib, but the wind was not on our side that day. Instead, we entertained ourselves by jumping off the bow. Our friend Chris definitely wins “best jump!”  Jereme’s cannonball was a close second.

Here’s our first EVER iMovie video!!!  :))))

I’m not going to lie, it’s definitely a super beginner production, but holy moly I’m clearly already obsessed with iMovie! I cannot wait to make our next video. Oh, and please excuse the cruddy iphone and instagram videos. I will be exclusively using the GoPro or my Canon 7D for video coverage here on out.

PS – Warning! A certain someone in this video is extremely pale. Note to self, get tan. 😉

LahoWind Sailboat Jumps! 06.22.2013 from Laho Wind on Vimeo.

Happy Sailing!