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Imperfections in a new hull? Advise please.

Old 07-14-2019, 05:05 PM
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Looks like a Dusky
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Old 07-14-2019, 05:07 PM
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"dents" are not good

some wave-y-ness is probably normal for gelcoat

stand further back and take a pic head-on

if things look blurry/wavey it could be a problem

you should see a mirror image/good reflection

a fix might be sanding down, filling in, smoothing out, and having it painted....
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Old 07-14-2019, 05:12 PM
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Any wave or hole and be sanded, filled and fared. But what happens 5 years from now and 200,000 waves later?
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Old 07-14-2019, 05:20 PM
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When you lay up a hull the outer surface is against the mold, so you will not see a defect in it until its pulled and exposed. The glass on the inside layup side is rough, so "dents" like these that can be seen in shiny light on the smooth mold side are not desernable on a laminate that has very rough grey woven roving ending up from 3/8 to 3/4 of an inch thick.

The way you usually get a waves, warps, or dents is when you have uneven forces working against each other. This can happen in several ways. One is to add lets say a lot of glass to the sides, leaving the transom thinner for the following days work. This lets a thicker stronger side area pull or warp a thinner transom when it heats to harden, and this a common complaint of motor installers on new powers that want to match uneven glass and motor plates that are machined flat to tight tolerances. Another way this can happen is when you add layer after layer of glass to the side, then finish the last layer with a hotter catalyst mixture to go off faster as your shift ends to stop wet resin from running down the wall and pooling in the bottom of the hull when you are not there after work to mop it up with a roller.

The remedy is to vacuum infuse using all the resin in one application so that it and the glass cures together at the same time being held still by mechanical force long after it gels, especially on larger hulls. Fiberglass and resins shrink, sometimes up to an inch per 12 feet, so this like welding needs to minimized and controlled, especially during temperature controlled cures.

Boeing invented this technology to produce stealth aircraft, like the B-1 Bomber and the F-35.

But fabricators like Bayliner produce a hull in less than a day, per mold, so there are lots of ways to put skin on a cat, imo.
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Old 07-14-2019, 05:36 PM
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Using a piece of string held on each side of the "dent" how deep are they? I don't have any solutions, just wondering if the gloss dramatically magnifies the deformities.
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Old 07-14-2019, 05:38 PM
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and it wouldnt be far-fetched that a bad detail/wax job could cause things to look like there is a problem

happened to me, got a better detailer, didnt have the issue again
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Old 07-14-2019, 05:40 PM
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Originally Posted by Metalbound View Post
I recently took delivery of a new boat that was custom built from a reputable builder and although it seems like a great boat the hull is covered in major imperfections ranging from deep scratches to no less than 10 major dents the size softballs. When you look down the length of the hull it is completely wavy and resembles a fun house mirror. I was told from the builder all of his hulls are like that and I should focus on how great the boat rides. At this point all I want is for the hull to look like new boat and not one that was beat with a baseball bat. Does anyone know how this can be repaired?
I'm attaching a photo but with the suns glare its hard to capture in pictures.
please post a couple pics that are in-focus from the side. I also think it would help to explain the brand and model. There are many other owners on here and someone could show pics of theirs either good or bad.I dont understand why some members are afraid to tell what brand their boat is. The guy with the Cobia problems was taken care of in a couple hours when Cobia saw the post.
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Old 07-14-2019, 06:11 PM
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Isn’t this your new Competition?
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Old 07-14-2019, 07:25 PM
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Originally Posted by Nineeight9898 View Post
Isn’t this your new Competition?
It obviously is.
Let's See Your "Competition Boat" 22, 25 or 31
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Old 07-14-2019, 07:25 PM
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Look at other boats..Regulator probably has one of the cleanest production hulls and compare yours to that. I bet their hullsides are not "perfect" either. Then you at least have a data point to compare to. Your pics are impossible to intrepret.

White hulls show defects the least. Dark shinny like your show the most. Paint it flat white..problem solved.

I am not a fan of dark colored hulls
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Old 07-14-2019, 07:30 PM
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In all fairness after my 7th Grady I just had one have a major
manufacturing defect which has me disgusted. They aren’t all perfect.
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Old 07-14-2019, 08:09 PM
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Builder trade secret exposed. It's like golf ball. Dents are there to reduce drag...

Injecting some comical relief. Too bad your happy moment was disrupted by this...
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Old 07-14-2019, 08:16 PM
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Anything can be fixed. In this case you will need this:

and this

and this
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Old 07-14-2019, 08:48 PM
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Originally Posted by mystery View Post
"dents" are not good

some wave-y-ness is probably normal for gelcoat

stand further back and take a pic head-on

if things look blurry/wavey it could be a problem

you should see a mirror image/good reflection

a fix might be sanding down, filling in, smoothing out, and having it painted....
zero waviness is the standard. No excuse for waves in hull sides.
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Old 07-14-2019, 08:58 PM
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Put a straight edge over the dent and take a pic from above so we can see the gap (how deep it is indented)......
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Old 07-14-2019, 09:20 PM
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If you paid 140 for a 31 I would ask Manny to detail it for you and move on before some idiot publishes this all over the internet hurting the both of you .

You are looking at something that is probably only 2-3/1000th deep, but if it bugs you, then it bugs you, and that's no good.
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Last edited by Bullshipper; 07-15-2019 at 02:50 PM.
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Old 07-14-2019, 09:33 PM
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Originally Posted by vandlor View Post
Looks like a Dusky
no it doesn’t
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Old 07-14-2019, 09:55 PM
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Dark hull sides can reach temps that post cures the composite and cause waves.
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Old 07-14-2019, 10:20 PM
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$140k for a boat that looks like a golf ball? I’d be livid. Did you take possession of the boat like that? I’ll be honest, I probably wouldn’t have noticed it when taking delivery.
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Old 07-15-2019, 12:14 AM
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if the manufacturer said all his boats look like that go see if they do. if they dont sue him for your money back.

if they do you are screwed as you bought and accepted what he does.

if you ordered a boat without ever seeing one live you have to take what you receive to some extent if that is his true work.

and when you buy anything custom you go over it and check it out carefully before you make the final payment.
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