OCSS-077 Fiberglassing the Bottom - Mini-Cruiser Sailboat Build

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THE BOAT: Scow Bow Mini-Cruiser. 14’ long (4.25M,) with a 6’ beam (1.8M,) and a draft of 2’6” (0.77M.) She features twin keels and a Ljungström rig. Every design decision is made to keep her simple, strong, and watertight.
In this episode I reinforce the transom with more fiberglass, cut holes for hatches, and fiberglass the bottom of the boat. The bottom of the boat at minimum has a layer of 1708, a layer of 10oz cloth, and a later of 6oz carbon fiber. However, the seam between the bottom and the sides has a 20cm wide 10oz cloth joining them, and under where the keels will attach got 2 extra layers of 1708. The area where the skeg will be attached got an extra layer of 1708 and a carbon fiber layer.
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Opening music: The Showdown by Karl Casey @ White Bat Audio
Closing music Playback by Power Glove
Mini-cruiser, Micro-cruiser, Pocket Cruiser, scow bow, twin keels, PVC foam core, garage DIY boat build, boatbuilding, Ljungstrom rig, San Diego California, #minicruiser #boatbuilding #boatrestoration #refit #sailboat #boat #sailing #solosailing #pocketcruiser #dinghysailing #sandiego

Опубликовано:

12 апр 2024

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Комментарии : 88

@Garryck-1 3 месяца назад

This is an algorithm booster! ⛵

@LEGOWENTV 2 месяца назад

Can never have enough hand rails. I suspect you’ll wish you did even more on those rough sea days. They look good.

@ocean_capable_small_sailboat 2 месяца назад

Could be! Thanks.

@SvenYrvindExlex 3 месяца назад

Good progress. One more advantage of having the spares inside is that on the road they do not get dirty also it is less difficult to steel them.

@ocean_capable_small_sailboat 3 месяца назад

👍 Absolutely.

@Vincent_fast_Stop 3 месяца назад

I was waiting for the moment ...now , I am waiting for the first sea trials. Bravo captain Perry for all the work done 😉

@ocean_capable_small_sailboat 3 месяца назад

Thanks! 😁I can't wait to get her to the water.

@michelrosb7433 3 месяца назад

Great work Perry, i hope you finish on you schedule, love the work you do. You mention that the waterline aft (transom) is just at the end of the bottom. My experience is when making way through the water the boat and especially aft part will sink a little bit down in to the water so your swim ladder will most likely by in the water or the waterline will be at your swim ladder. Hope this will make sense to you when you want to make holes around that waterline level. Good luck with building and Gods speed. Gr Michel from Holland.

@ocean_capable_small_sailboat 3 месяца назад

Thanks Michel. I've made a lot of schedules for the boat but I haven't been able to adhere to any of them, haha. It's true these items will be underwater often while sailing, it's OK. Just hopefully sitting at anchor or the dock they will be above waterline. We'll see!

@tomlogan2102 3 месяца назад

It’s so great to see you back. I was afraid that February had killed you. What a great project. I am loving the whole thing.

@ocean_capable_small_sailboat 3 месяца назад

Thanks Tom. I won't stop, we've come too far!

@kevinhornbuckle 3 месяца назад

For your swim step, you could have a piece that simply clips onto the structural one on the transom; Take it off when you are under way. A step or two lower would make using it much easier.

@ocean_capable_small_sailboat 3 месяца назад

Yes, I could. Though I'm pretty agile and still youngish and I think I could manage to get onboard with no swim step at all, so hopefully this is more than sufficient.

@josephlai9759 3 месяца назад

Your boat structure is very strong!

@ocean_capable_small_sailboat 3 месяца назад

Thanks! I think so too.

@boooshes 3 месяца назад

I've done a fair bit of glassing over the years - you are doing a nice, neat job. When it comes to fairing, I saw an interesting process that potentially saves product and time. Apply the first coat of fairing mix with a 50% square notched trowel with an 1/8" or 1/16" notch, depending on the surface condition. Fair that surface with a long board (you only have to sand 1/2 the amount of material and only had to apply 1/2). Next, trowel fairing mix on to just fill the grooves that are left. Light sanding next. Anyway, it might be worth trying.

@ocean_capable_small_sailboat 3 месяца назад

Thank you. I'm afraid I'm not that scrupulous with my fairing and painting, but that sounds like a good method.

@boooshes 3 месяца назад

@@ocean_capable_small_sailboat fair enough. Well, in practice, cruising boats that remain in the water, especially warm water, are often burdened with some sort of attached living organisms that make "scrupulous" fairing only an advantage for the eyes. It will be a delightful day when on a broad reach in 16 knots of wind you are puzzling about perhaps making 3.8 knots of headway instead of 3.7 with a better fairing job.

@ocean_capable_small_sailboat 3 месяца назад

@@boooshes Haha, yes, it's ok. I'll get a few extra pages of my book read with the extra time, or get to enjoy 1 extra sunset 😉.

@paulisabelle1188 3 месяца назад

Hi Perry, I just fell into your rabbit hole and I am not sure I will escape ;-) This is an awesome project, well researched and innovative, your background serving you well Sir. Bravo! Thanks for mentioning your sources of inspiration which I have devoured: Yann Quenet (Baluchon) and Gérôme Delaunay, Naval Architect (Tenten 305, Tenten 425,..). Delaunay's junk sails are interesting, though perhaps not quite as OC as Yann's furling rig. The French are an OC people, inheriting from the Romans to the Vikings. Have you seen the Wharram Wingsail? That could be an interesting high performance solution. The twin stub keels you opted for are sensible, practical and prudent modification. Centreboard boxes are a risk to hull integrity. Paul, Quebec City.

@ocean_capable_small_sailboat 3 месяца назад

Thanks Paul, I'm glad you enjoyed them. I'd heard of Wharram cats but not that specific rig. Looks good, I like boomless solutions.

@Len02013 3 месяца назад

Hi Perry, you’ve probably progressed further. But possibly put another layer of fiberglass on top of carbon fibre could have been beneficial. As long as it’s not that thick, it goes clear and don’t notice it. Plus when sanding, it goes into the sacrificial glass layer instead of carbon layer. Or even on the bottom a few layers glass for future bottom paint removal :) Least that’s what I’ve seen anyway with other cf work where it’s not weight critical :)

@ocean_capable_small_sailboat 3 месяца назад

Appreciate it. The surface looks pretty good to me already, I don't think much sanding is needed. I have to add some fairing compound to a few low spots and sand that.

@Len02013 3 месяца назад

@@ocean_capable_small_sailboatbtw, reckon your doing great job. Keep it going & looking forward to seeing it in the water :)

@ocean_capable_small_sailboat 3 месяца назад

Thanks me too. We are finally getting close.

@curtiscagle6261 3 месяца назад

Perry, I love your boat. Great idea of putting an access hatch on the transom.

@ocean_capable_small_sailboat 3 месяца назад

Thanks 👍

@NM-ql9er 3 месяца назад

Freaking awesome dude. You're getting it done. You'll be in the middle of the ocean chilling soon

@ocean_capable_small_sailboat 3 месяца назад

Hope so!

@billywhizz6483 3 месяца назад

Looks great! Your meticulous planning and preparation clearly pay off, love the carbon fibre too!

@ocean_capable_small_sailboat 3 месяца назад

Thanks so much! I love the carbon fiber look too. It's temporary though, the boat has to have bottom paint for long voyages unfortunately.

@thomastaylor6991 3 месяца назад

Gonna be an awesome vessel. I would need a swim elevator . Back to the drawing board,i suppose.

@ocean_capable_small_sailboat 3 месяца назад

Thanks! Maybe just no swimming for you, or a very good hinged ladder.

@nemosvoid 3 месяца назад

Beautiful! 😍

@arnekvinge6073 Месяц назад

Aiaiaiai!! 10 000 !

@Monkeywrenchmotorcycles 3 месяца назад

The carbon fiber would look amazing with a layer covering the whole boat, then clear coated to get the glassy look

@ocean_capable_small_sailboat 3 месяца назад

I thought so too, that would be cool. It would be pricey though.

@polderfischer8565 3 месяца назад

Amazing last layer with carbon fibre!

@ocean_capable_small_sailboat 3 месяца назад

Isn't that cool? I love that look.

@PineappleAdrift 3 месяца назад

That's a ton of work to do by yourself! Bravo!❤

@ocean_capable_small_sailboat 3 месяца назад

Indeed, had to break it up into parts.

@Trevlead 3 месяца назад

Learning a lot. Thanks!

@raw123yt 3 месяца назад

Congratulations, that is a BIG job done. You may have already thought of this but I think it will be hard to get a foot on your swim step when you are floating in the water. Are you going to have any kind of rope ladder hanging below the swim step?

@ocean_capable_small_sailboat 3 месяца назад

It could be added if needed, but I don't think I'll need it.

@nasseemmuttur778 3 месяца назад

Good work captain. Can't wait to see more.

@Stupha_Kinpendous 3 месяца назад

I'm really looking forward to this bit.

@samijokinen6923 3 месяца назад

Nice work!

@moosebonsai 3 месяца назад

Well done.

@jpendres 3 месяца назад

Keep going!

@kathymacadam7613 3 месяца назад

Bullet Proof... Great job

@normankaesberg8049 3 месяца назад

Thank you so much. I can hardly wait to see the next episode.

@ocean_capable_small_sailboat 3 месяца назад

Hey, thank you! Very kind.

@PaulGibson-bx6sv 3 месяца назад

Looking better and better, keep up the good work.

@ocean_capable_small_sailboat 3 месяца назад

Thank you, I keep marching forward to the goal!

@rebuildingnoseas 3 месяца назад

Awesome work Cap! Great idea on the Carbon.

@ocean_capable_small_sailboat 3 месяца назад

Thanks 👍

@andrewwastney9228 3 месяца назад

your doing so well mate!I really enjoy your content! good job!

@ocean_capable_small_sailboat 3 месяца назад

That's awesome, thanks a ton! I finally feel like maybe I'm on the downhill side of this build.

@sailingona 3 месяца назад

Wow this is amazing 👍⛵️⛵️ į can feel your pain , well done

@ocean_capable_small_sailboat 3 месяца назад

Thanks 👍. Thank goodness for peel ply and being able to break the task up into 5 days.

@DowneastThunderCreations 3 месяца назад

👍👍👍

@BrunoWiebelt 3 месяца назад

nice

@rickpawl 3 месяца назад

I am really loving seeing this project come together step-by-step. I can’t wait until lunch day. One question, are those white spots in the carbon fiber along the centerline bubbles or air pockets?

@ocean_capable_small_sailboat 3 месяца назад

Thanks. The peel ply comes folded so what you're seeing is where the peel ply wouldn't lay perfectly flat on the carbon fiber due to the peel ply's crease. So you get some little raised parts where it's white. I just had to sand those areas a bit after removing the peel ply.

@Garryck-1 3 месяца назад

@@ocean_capable_small_sailboat - What I found helped tremendously when it came to the fold lines in peel ply, was after cutting to size, I'd use a steam iron set on low temperature to get the creases out. A little more work, but still less (and easier) than sanding epoxy!

@ocean_capable_small_sailboat 3 месяца назад

@@Garryck-1 Thanks!

@TomStuchberySailing-eg9vr 3 месяца назад

Really impressive effort, that would have been a brutal job by yourself. It’s a shame you didn’t have Kevlar instead of carbon, that might have more impact resistance than carbon for the underside? Although I suppose the keel and skeg will obviously draw more than the hull anyway. Keep going, can’t wait to see it out on the water!

@ocean_capable_small_sailboat 3 месяца назад

Thank you, it was indeed tough work. Kevlar would be great, but I feel pretty good about all the layers I chose to add. And after all it's a tiny boat.

@TomStuchberySailing-eg9vr 3 месяца назад

Yep, I think it looks bulletproof, can’t wait to see it on the water!

@SailingThruLife 3 месяца назад

Looks good, Captain! I'm super excited to see it in the water, and I hope you reach 10k and beyond. Just wondering, have you looked into the best way to combine carbon with glass? What you're doing is probably fine, but I've heard that it can have an overall negative effect on the structure.

@ocean_capable_small_sailboat 3 месяца назад

No I hadn't heard that. I just treated it the same as another layer of fiberglass.

@leemelbourne3297 3 месяца назад

Great video. I look forward to seeing how you finish the hull. It is unfortunate the carbon sheet layer wont be visible above the waterline. I noticed that you dont seem to get many stray fibres at the edge of the fibreglass sheets. That is a major problem for me whenever I glass something. How do you manage that?

@ocean_capable_small_sailboat 3 месяца назад

The CF will also get painted over, but I am enjoying looking while it's still unpainted. Hm I get some stray fibers too but not bad. I guess I try not to handle the cloth much once it's cut, and I roll it up gently. Then I roll it out onto the surface when it's time to epoxy. Peel ply over the cloth and past the ends, mushing any stray fibers down onto the surface they just cure onto the project with the rest of the cloth, or remove them before the peel ply if they've full separated from the cloth anyway. Good luck.

@newkid8092 3 месяца назад

Hey, well done! Why do you use a full ply of carbon on the buttom? I am interested in calculations for glass or carbon boats. Especially in how to adapt from a wooden design.

@ocean_capable_small_sailboat 3 месяца назад

I don't fully understand your question. But, I think you can build any plywood design with foam sandwich construction. The end result just might be a bit lighter. I actually think once the fiberglass is on the foam the weight is pretty similar to plywood, but probably a bit lighter. Depends on how much fiberglass is used of course.

@joell439 3 месяца назад

👍😎👍

@realnutteruk1 3 месяца назад

1th!

@user-qb7ms5nw1o 3 месяца назад

Does it matter in which order one lays down the fiber? In other words, is carbon over glass the same strength/stiffness as glass over carbon?

@ocean_capable_small_sailboat 3 месяца назад

I don't know for certain. I wanted the CF as the last layer to protect all the other layers, and because it gives a nice smooth finish which will be easy to fair and paint. Also, it looks cool😉.

@EUC-lid 3 месяца назад

Carbon is electrically conductive, so it’s usually insulated with a layer of glass just to prevent any potential for galvanic corrosion with adjacent hardware. Probably not a concern for the bottom of the boat. Structurally, it’s usually a bad idea to add a high modulus material onto a lower one. Adding a similar (to fiberglass) modulus material like kevlar isn’t a huge concern, but what The Captain has done here was perhaps unwise (I missed if he mentioned an engineer signing off on his layup schedule). Any structural test of the tensile strength of the CF covered fiberglass will result in the (4x stiffer) CF taking all the forces long before the fiberglass is involved. This _could_ mean delamination of the CF layer. But as he says, it is a small boat, so the forces involved may not matter. He does cite using the CF as a protective layer, which is a bit odd, since CF is more brittle and prone to impact damage than fiberglass, but perhaps he’s protecting it from something else.

@user-qb7ms5nw1o 3 месяца назад

Thank you AdamJ. I want to check that I understand what you said. Glass and Kevlar are compatible in a laminate layup because they have similar stiffness. Right? Does it matter if one uses epoxy or polyester resin? If it is the case that glass and Kevlar have similar moduli, would you put the Kevlar on the outside to offer better protection from rock strikes and other abrasive damage?

@EUC-lid 3 месяца назад

@@user-qb7ms5nw1o The matrix (epoxy vs poly resin) shouldn’t matter much when it comes to mixing fibers (except for stranded mat which needs poly to dissolve the adhesive properly). There are matrixes that are better suited to high modulus CF, but that’s aircraft/racecraft stuff. Yes generally adding a few layers of aramid (Kevlar) on the outside of a fiberglass layup for impact and abrasion resistance will be effective while having little effect structurally. Aramid is typically within the modulus range of glass fibers. Unfortunately, mixing CF and fiberglass isn’t the same thing and can disrupt load paths potentially resulting in point loading and delamination. Think of it like a series of 5 small chains designed to hold a 10lb load. Each chain is a layer of fiberglass. Together they can hold 50lbs. Now you add a stronger chain to the mix that can hold 40lbs, but it’s one link shorter (higher tensile strength).. that’s your CF. Now your system can hold 40lbs, but at 41lbs the short chain breaks and the 50lb chains now have to deal with a sudden dynamic load. Things _can_ go badly. But I’m just some dude on the internet. I think The Captain should consult a composite engineer to review his layup choices and get it approved for intended loads.

@Garryck-1 3 месяца назад

@@user-qb7ms5nw1o - Kevlar works much better for impact resistance than abrasion resistance. But what almost nobody realises is that it needs to be sandwiched between two layers of plywood/foam/fibreglass for effective impact resistance. It should not be an external or internal layer. For an external layer of highly abrasion resistant material, the best approach is a layer of Dynel. Dynel also has the advantage that it's not as expensive as Kevlar.

@bruunism 3 месяца назад

What is the price in materials so far?

@ocean_capable_small_sailboat 3 месяца назад

The cost is no joke, I've passed 8 grand already...

@setkacagarro-blogspot-com 3 месяца назад

Wow watching your layout of all the glass , I was wondering if you were going to do it in one shot, thats a shed load of glass and fabric, good job and its is super extra strong now

@ocean_capable_small_sailboat 3 месяца назад

Thanks! Yes it was way too much work to do in a single day by myself.