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Copying a 31 Bertram in Quepos Costa Rica

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Copying a 31 Bertram in Quepos Costa Rica

Old 04-29-2017, 09:13 PM
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Old 04-29-2017, 09:22 PM
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Oh yeah, I'm in a front row seat for this build.
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Old 04-29-2017, 11:15 PM
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A guy in Hawaii molded a SeaCraft Hull and called it a SaltWater. They got sued years ago for doing this. So they modified the hull and now call it a Yellowfin. Not the same Yellowfin from Florida, although all the good hull designs come from florida. Anyway, good luck with your build and hopefully Bertram doesn't hear about this one.
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Old 04-30-2017, 04:48 AM
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Sub'd been keeping an eye out for this.
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Old 04-30-2017, 04:56 AM
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Old 04-30-2017, 05:25 AM
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Originally Posted by SailFishQuepos View Post
This is kind of Ad hoc boat building, our fishing grounds are only 15-30 miles from the dock so other bertrams, like the one I am copying, are burning about 50-60 gallons a day total on day trips. This one will burn a little less. So I am assuming 80 is more than we will need. I may chicken out and do a 100 in the partition, yeah that sounds like a good idea, so we have more leeway. I can bring out a bladder, or maybe just a plastic 55 gallon drum for the FAD trips. I'm not sure I'm super interested in FAD trips, but that might change. I'm on the fence. A light weight 31 footer could get there for about half what the bigger boats are charging, and would catch just as many fish. i wonder if there are people that would want to do that? I know my captains would be up for it!

On the FAD trips, the way it's done here is leaving out at night and trolling all night to get to the FADS, then fishing two days, and trolling home the last night. That keeps the fuel burn and price of the trip down so more people do it. The bigger boats, 40-45 footers, are burning right 300 gallons, so I was thinking that we could do the same. My main issue is the tank and where it goes. I'm scared if I make it bigger than original it will offset my balance of the boat. Maybe that is a mute point with using the foam core, but also that is just where the tank goes. And i believe the original is 280 gallons, so that how big the space is, that's how much i get.

I LOVE ideas though, now is time before I get started. Everybody throw everything out there and I'll see what I can use!!!!


Kinda like my last project, this isn't a for sale boat, it's just for me and it's main goal will be to fish here in front of Quepos. I plan on fishing this one until the props fall off, and then buying new props and doing it again!


Yea.....having just been down there You would think I would be more clued in on how blessed y'all are on the short runs. My mind works on what we have to put up with. Curious to what you think the wet weight will be? I know the originals were all over the place during their production run. I guess I'd just rather have a pair of 260's running at 60-70% load than a pair of 210's running at 80-90% load. Then there is the days when the bite is going off 25 miles away........This will be cool.
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Old 04-30-2017, 05:39 AM
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Old 04-30-2017, 06:20 AM
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I be down there in a few weeks ......gotta ck it out.
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Old 04-30-2017, 07:04 AM
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Sub'd. I'm in! Looking forward to another great thread Capt. John. This one may be your most challenging project yet.
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Old 04-30-2017, 07:15 AM
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I'm in for this one
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Old 04-30-2017, 07:39 AM
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WOW, this is going to be awesome. whats the projected weight of the finish product? Timeline??
Keep posting lots of pics
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Old 04-30-2017, 07:48 AM
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Originally Posted by Riptide View Post
Yea.....having just been down there You would think I would be more clued in on how blessed y'all are on the short runs. My mind works on what we have to put up with. Curious to what you think the wet weight will be? I know the originals were all over the place during their production run. I guess I'd just rather have a pair of 260's running at 60-70% load than a pair of 210's running at 80-90% load. Then there is the days when the bite is going off 25 miles away........This will be cool.
I'm almost there with you. I was on the fence, I have 2 boats with a 6bt 210 and I have a boat with a 6bt 260 and 2 boats with a 330hp. The 210 and 260s are both great engines, 330s are a pain in the butt with the saltwater aftercooler, and the 330s wear out a lot faster. My biggest complaint on the 260 is the high idle. The 210s idle at 600-700 and the 260 idles at 900-1000. When you are bump trolling live baits that is a huge difference. And then the pump on the 260 is Nippondenso and it is hard to find parts to. The rotary pumps are fairly cheap (half the price of the inline) and I just had one go over 12,000 hours on my 28 footer so they last a LOT longer. And then with the 210 I can use the smaller (half price) ZF 65A, with the 260 it slipped a little bit on my bigger boat so I put in a ZF220A which is double the price and weight. I don't have an unlimited budget, or you would see twin QSB 380's in here and a 40 knot cruise! But boy wouldn't that be sweet!
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Old 04-30-2017, 07:51 AM
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Originally Posted by JAX808 View Post
A guy in Hawaii molded a SeaCraft Hull and called it a SaltWater. They got sued years ago for doing this. So they modified the hull and now call it a Yellowfin. Not the same Yellowfin from Florida, although all the good hull designs come from florida. Anyway, good luck with your build and hopefully Bertram doesn't hear about this one.
I see all sorts of people doing Bertrams, mine isn't for sale, it'll probably just be a one off, I'm hoping they don't bother me. That link above is a guy straight up copying the bertram and then selling them. I'm not even close to doing that. When I did the Ocean Master a year back and the owner actually called me and thought the project was cool. It would be bad publicity if they shut down people that really wanted to own a Bertram, but couldn't afford one, from building their own. I don't think they will bug me, we'll see.
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Old 04-30-2017, 07:54 AM
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Originally Posted by CGBOY View Post
Sub'd. I'm in! Looking forward to another great thread Capt. John. This one may be your most challenging project yet.
Most definitely. But I'm going to take my time more, not try to finish so quick. When I push really hard it takes the fun out of it a little, that's why I burned out last time and took a year off. And then when I'm done, I'm going to try not to jump into another one right away. But i do have my eye on that old Bert 38 wide body.....
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Old 04-30-2017, 07:58 AM
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Capt John, are you going to make Harold wear that female nightgown again?
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Old 04-30-2017, 07:58 AM
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Originally Posted by HTJ View Post
Great project

With lightweight at least some portion of your goal, and "only" packing 2 x 210 power....would you consider building it as an express? An express 31 Bert has been a long time pipe dream of mine, but with a pair of 330's
I did think about doing that, but it's actually cheaper for me to do the cabin because the most expensive part for me is the tower and aluminum work, since I don't do that myself. With the design like it is, all I have to have built is a small shade. And with the DivinyCell core, it won't be heavy at all.

And then for the business side, I have a few people that don't go with us because they want cabin and AC. So this is the 6th boat in the fleet, so I figure now's a good time to cater to those people. I'm going to try to keep this one priced at 950 for the full day offshore, so it'll be light years ahead of other boats here with AC and twin diesels in price. We'll see where it ends up and where the market is in a year though. I'm going to take a while to build this one, it won't be nearly as fast as the other builds, because they were just a kick in the pants. I want to enjoy this one more, and when I'm tired go home, and I might hire a few more crew so i don't have to sand as much!!!
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Old 04-30-2017, 08:04 AM
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Originally Posted by aFORDable View Post
Capt John, are you going to make Harold wear that female nightgown again?
Yes, a build wouldn't be complete without the terrible used clothes!
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Old 04-30-2017, 08:08 AM
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Originally Posted by Bamaboy14 View Post
WOW, this is going to be awesome. whats the projected weight of the finish product? Timeline??
Keep posting lots of pics
Will post lots of pics, probably too many! I have no idea, and I don't have a scale. I don't think there is a scale in this country. I don't know, that guy building the bertrams up above said his were 7500 pounds. I don't buy it because they are just glass, I don't see why they would be lighter. But mine with the foam core will be much lighter than original, probably 60 percent of original. And then our typical fuel capacity will be 200 gallons less when I don't fill up the FADS tank, that'll save some weight. It'll be light.

My goal is to take a year to do it, but if I get carried away we might finish a lot faster. I could do it in 4-5 months if I had to. No idea, but I want to be done by May 2018 for sure.
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Old 04-30-2017, 08:19 AM
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SUBD

Excited already.
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Old 04-30-2017, 08:40 AM
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Originally Posted by SailFishQuepos View Post
Will post lots of pics, probably too many! .........
That's impossible, let them flow. Really like watching.
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