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You should have a separate grey water tank for the sinks and keep the black water for the heads

Don't get me wrong but the pontoon build is a favorite, the camper build has not been forgotten.

Very exciting. One or two suggestions: First, please consider installing a small porthole into the wall of the head (bathroom). It will add light and more importantly it will add ventilation. Much nicer for users! You can can buy a small rain shield for it, and if it is installed on the outboard side of the structure no one will be able to peek in. Next, please look into top quality marine hoses especially made for toilet discharge use. Hoses not made for toilet discharge use start to reek through the plastic quickly.

Some advice replace those Tee in the electrical conduit with water proof junction boxs, save you some headaches

You do not want your sinks going to black water...that is considered gray water and usually is not a problem going over side....50gal is nothing with sinks attached to it as well as the shitter.....do a bit more checking if you have not already on gray water regulations for your boating area.....

17:00 I'm a painter of 45 years, if I've leared anything about wood and water over that time, and I was building this boat, I'd be sure to finish that plywood decking with primer, paint, fiberglass resin, something, anything. Even if it's marine grade plywood. It takes much less time at this stage to do, then it does to tear everything apart later, once everything's been built. Overkill ? Probably, but thats just me. Better safe than sorry.

Don't forget that hot tubs have lots of electrical stuff "exposed" down inside their enclosures. You will need to be sure that water cannot flood that big box you're going to set it in, and that you "will" need access to the pumps, valves, and electrical circuits down under the hot tub. Plus, even though the marine grade plywood is marine grade, it would be smart to paint it, top, bottom and edges before installing it permanently.

A little tip on running small cables for a plastic pipe if you tie a bit of plastic bag to the end of the cable and get a vacuum cleaner on the other end of the pipe. It will suck the cable through the pipe to where you need to be. You’re welcome.

There are many single-use products available to purchase, like disposable cameras. But never in my life, have I heard of a single-use pontoon boat 😂

BTW, the back end of a marine vessel has almost as much impact on the hydrodynamics as the front end. In other words, a flat stern will create nearly as much drag as a totally flat bow (a blunt bow means the vessel has a harder time PUSHING the water out of the way an equally a flat back end literally "sucks" the boat from moving forward. And so, IF you can be bothered to give the front some nautical shape shape, please give the back end some ship-like qualities and do something appropriate at the rear end... or it will go even slower than you currentl expect!!! The same principles apply to the hot-tub, You might even notice the difference!!!

I need a neck brace for watching this series. I do so much head shaking during these episodes that I'm going to give myself mild whiplash. There's always something that I think "Well that won't work" and they spend so much time, effort, and talent on fabrication of these pieces of a puzzle that will ultimately prove to be a horribly idea. I see the framing support structure in the bow of the hot tub box and imagine that IF it floats and moves forward through the water you will soon see those supports embossed through the front steel just like a worn out skid plate on a Baja racer. This series is like watching an unnecessary but imminent train wreck unfold in slow motion. I wish him all the luck but my doubts easily outweigh my optimism. I'm quite sure the "Barge Yacht" will not be what he is envisioning. I guess it makes good KZfaq though...

Has anyone told Chris that “Yacht” is a specific designation to hull and build spec? 😂 this is a houseboat

B is for Titanic - I wonder if things will break if that big flat box with a 2000 lb hot tub in it gets above and out of the water and slams back down. My guess is the hot tub will blast right thru the floor and go down to Davey Jones Locker.

Id make sure there's no baffling inside that black water tank. Shit might get stuck clogged. Im imagining that wouldn't be a fun fix after it's full.

That Texas tugs thing is wild, as a boatie I can tell you that would be such an amazing relief to know. Never even knew that was a thing. Good job

Surprised no one has mentioned this. Plywood has different face grades, Chris is using Marine Ply and in his case it's B/C grade. All the sections where the stamp is visible on his deck is C grade and should be flipped so the better B side is showing.

2:22 "Oscar dying to weld something" makes a t-shirt for that 😂😂😂

I can't imagine the cost you're going to incur when you move this to the water. It's bigger than a shipping container in all dimensions and no doubt you'll need an escort to travel. Good luck

If that weep hole is below water level it will also be a fill hole (aka a leak).

If you don't leave access for equipment repair on the hot tub you will hate yourself later. You will most likely have to drain the unit and pull it out of the hole. just some friendly advice from a 12 year Spa Repair technician.

if you run long strings down each path and keep lots of extra at the start to pull multiple sets of wires down each hole you can put it all together so you can run wires as you need them with the deck on

This boat is going to be absolutely flippin awesome when it's finished! Can't wait to see the finished product!

✌️👍 Soldier a little bit of advise for you.... where you have the crossovers..... make some sort of access point at the top of that crossover.. if you ever have to run new wires for some reason and you don't have that access to those keys you're going to have problems I've ran into the same issue myself... 👍✌️

I’m going to make a presentation: this pontoon is probably going to tilt forward and to starboard. The hot tub water looks to be really heavy. Same goes for the stairs and bathroom (head).

You have the BEST music on youtube

You probably don't want to use PVC water pipe as electrical conduit. Electrical conduit is fire resistant and is resistant to the UV light reflecting off the water and causing it to crumble in time.

I would add a couple of drains to your electrical conduit line. Just in case

Lol, Irish Rock is one of my favorite ringtones. Wasn't expecting it in an ad roll!

My son pulled a two story pontoon cross country to Oregon he had to dismantle the upper deck to clear bridge and lights

That's got to be the king daddy of party boats . Bad ass love it . I think you finally out did all other builds so far !

If you aren't already past it, where you have the 2" PVC Teeing off for the cross plumbing, put a large water tight pull box instead of the "Tee".

Hey Chris.. You should make a storage hatch compartment in the triangle area in front of the hot tub.. for life jackets, anchor, etc... just a thought.. CHEERS!!!

You might want a sump and a macerator in that Blackwater tank - unless you don't mind partially emptying it. I imagine it has baffles too which will make emptying it a dream. It is going to be rich and soupy ....

This project is perfect for an epic long bowsprit, these structures are exciting to stand on when a boat is underway, and your boat size would support an extremely long one, perhaps a folding design that can be deployed when on the water.

To help learn port versus starboard, use this little ditty… The ship left port.

May be worth building a little bow on the front with some benches maybe to help with choppy water. But that's always something you can add later I guess.

Well dang it. I didn’t realize you were offsetting the hot tub with a larger tub. That makes a lot more sense. I thought you were going to fill the front tank completely. Smart.

That is one nice Barge I mean nice and I ordered some stuff from your sponsor for my boat very professional people.

Lap joints or tongue and groove instead of butt joints on the decking would add quite a bit of strength and also stop water penetrating the decking joints.

Specific ringtone for your favorite people works as well, like that awesome ringtone for Oscar

Gotta say…. Oscar needs a raise….nice work

Prerun some pullcords in the pvc for the day you might wanna add some wires, or pull one out and put it back in

That “ It Sucks Shit Out “ had me laughing !!!! Thanks man

“I’m not sure if we’re going to stagger all 3…I am sure that we are not going to stagger all 3.” 😂😂😂

You'll need a black tank flush to keep it clean as possible plus a macerator toilet.

1 sweet ride. Can’t wait to see it on the water.

Any water T fitting is going to be inaccessible later if you have to replace a wire. Installing side or back access pvc T conduit fittings would be a good idea. There is a removable access plate so you can completely assemble conduit then pull wire. And replace wire later if necessary.

Man I have a 35 foot party barge with a bathroom, kitchenette and 2nd floor. Let me tell you that is alot of boat, and yours is much larger...good luck my friend

Glad that Texas Tugs analysis worked out so well. I was really curious about that aspect.

Grey tank,(could be plastic) sink drains, black tank is everything else.🤗

Check for voltage drop on the run for your main battery cables to your engine and ask a marine sparky about induced voltages in your sensor wires and sensitive wiring. Gotta talk to a Marine Electrician. Gotta! Run all earth returns, definitely don't run through the Ally. Apologies for being a know-all bastard. Oh yeah and your tanks, I would definitely consider mounting them on rubber mounts espescially the hot tub as that is gonna potentially have at least 4 Gs of induced vibrational weight.

I think I saw Heavy D is building the same boat. 😮

It’d be cool to have two switches at the helm that either pump in or out water from the tub so that you can adjust bow weight on the go

Put your batteries in the new 'found space' around the hot tub. Instant forward ballast.

He's going to need to wear a "I built this $hit myself" shirt from Cleetus when he's captaining this thing.

Thanks to Texas tugs and Tim , I was very curious 👀 how this vessel would do in that test so I’m glad it’s passed! Good job Chris and Oscar

That fuel tank has baffles internally - don't know if that would affect flow of the 'matter' towards the back, maybe if it was well macerated and you could incorporate a flushing system at the front end or get inside and widen the 'holes' in the baffles to at least 3-4 in

Cool that you found someone to run the boat through some simulations. Now reach out to any one in the septic pumping business or waste water treatment, to explain why you absolutely do not want to use a tank with baffles in it for black water. Baffles don't lend themselves to getting tanks clean, and it is why food grade tanks and shit tanks do not have baffles in them. An RV or boat cassette toilet with just a gray water tank would be a lot better setup.

The suction tube should be an inch off the bottom. Also needs a vent.

I think it would be advisable as the lengthwise decking does not fall on any blocking to have a tenon rather than simply gluing the edges.

"Go down and into that black guy right there" ~ MOVING ON! -- oh man LOL!!! 13:58

I love this build. I can not wait to hear the cost breakdown!! I have a feeling it’s a lot cheaper than buying any other 40’ yacht

Merely curious, isn't that trapezoidal bow on the tank going to cause some slight steering force in one direction?

Use an incinerator toilet. No waste water to deal with. I think if your sinks are only connected, it's considered grey water.

Don’t forget to refill your P trap(s) if you combine the black & grey. You’ll be getting it emptied often and if you forget you’ll get sewer gas in your sink

They’ve got you listing to your port side enough it’ll affect your straight line and steering. I’m sure you’ve accounted for it but it’s worth mentioning because you will feel it when standing on both decks

Add a level float and a gauge Cause it would Suck if you fill the tank too soon during that party your planning.

I'm loving this build so much, only channel I have notifications turned on lmao

I hate giving advice so it’s just a thought that popped in my head. If the pontoons are your verticals bracing and your 2x material is your horizontal material. I would really run some more vertical supports along the bottom of your pontoons and running front to back. As it smashes into the water the only thing stopping it from buckling are your pontoons that have weld in them. I am not an engineer or have any expertise in the marine world but I am a home contractor if that means anything.

Yerr. A quick guide for learning port to starboard (STBD) side is PESO. We use this in the Navy to help distinguish it for new people. Port -Even, STBD- Odd. Hope that helps! (:

13:20, it's my understanding that the GREY PVC electrical conduit is more UV stable than the regular white plumbing PVC🤷‍♂

Its midnight right now from where I am and I've been thinking since yesterday how an episode from B is for Boat is long overdue, super excited for this one

Your black water tank should be enclosed so it’s protected from rocks and anything that can puncture it. If you spills black water you would face expensive fines.

Maybe a separate grey water tank and then a much smaller black water tank? That is an absolutely massive black water tank.

put the batteries as close to the engines as possible to make the voltage drop as low as possible, also i would be looking at 2 separate systems ,one for each engine for safety with control isolator switches (one each engine and a one that can link them in case one of the charging systems goes south)

Are you calling into question the pontoon welds onto back of hot tub? How dare you! Haha

I would have 100% gone with an incinerator toilet so the tank would only need to be gray water. Also, electrical pvc is gray and uv protective. You should have also gotten glue-on conduit bodies so you have access to the joints to make it easier to pull wire. All the electrical pvc conduit is available at home depot for cheap.

Man this is coming out professionally

I was about to die inside if you didn’t stagger the sheathing.

You might have filled the conduit tubing with all sorts of wire pulling string before fitting it together...I know it's not yet glued but would have been better to do when initially fitting.....good luck, pulling wire is tough tough duty especially the lengths you are looking at.!!

Wedge before the engines, massive cavitation issues I foresee and also issues with getting brab for the props. Vripak would not be happy.

I don't know what you're putting in between your hot tub and that void but I would use some two-part mixture that would create a foam like spray foam to create more rigid as well as insulation for the hot tub and also if need buoyancy

If you haven't done so yet, you need to finish connecting the strakes together on the lower sides of the pontoons.

You could do a water divert and have the engines heat the water for the hottub when you need it. 😎👌

When you get to running cables, put a vacuum on one end and a pull string on the other with a plastic bagtied to it, makes a lot easier for cable runs, should work on the crossover too so long as you cap openings

Anywhere the wood touches the aluminum stringers I thought you should have the rubber tape. It seems like they put it some places but not all. Is that gonna be an issue moving forward? Watched pontoonstuff videos and they run it the full length before screwing the wood down🤷

your test just show the pontoons give enough buoyancy. Everyone was saying the pontoons would breaks its welds

I’d advise against using aluminum for acidic black water containment. They used to be in houseboats which now all use poly tanks. If you installed a flush system for the tank itself to keep it clean you would be ok. Dissolving toilet paper is also recommended unless you live in Kentucky where they prefer to use a trash can for used TP…can you believe it?

Make sure you put a bilge pump in the bottom of the hot tub box

Conduit suggestion, If you replace the Tee with a Cross and use a threaded plug on the outside it will make fishing wires a lot easier

Did you leave room for the rub rail/ deck trim that goes on the side of the aluminum tubing/ deck? Also have you considered adding bow thrusters?

Will you have a flush connection on your blackwater tank? It is recommended that black water tanks be flushed each time you empty them. Flushing the black water tank keeps the tank clean and free from the residue from storing human waste.

Lovethat you have the drop kick muphies as your ring tone! 😊

use a whale gulper in line grey water pump for the grey water (sinks) super easy, reliable and don't need a sump or tank. Also would be good to add a access hatch for the black tank if you need to clean it

Love watching this build ya rock I enjoy cuz ya break it down

looks good, that sheet under the tub where buddy was standing looks like it could use some more wields, was flexing a bit.

"oscars dying to weld something, so let him eat!" 😂

Would a hot tub cover with fold down baffles that go to the bottom be helpful for cruising around and reducing sloshing of the tub? Or is that overkill.

This is an amazing build !!!