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Florida Gulfcoast Spearfishing Post here to discuss regional action or issues about spearing on Florida's Gulfcoast. |
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12-27-2017, 04:11 PM | #31 |
Dan MacMahon
Join Date: Jan 2003
Location: Hudson, Fl
Posts: 1,904
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quality Hull, nice size, good pick.
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If you stay in this sport, and really apply yourself , in 10 years you might be the diver you think you are today. Smart people realize they know very little. Stupid people think they know everything. |
12-29-2017, 12:22 AM | #32 |
Registered User
Join Date: Oct 2007
Posts: 1,720
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
I've the same boat as Moose and doing the same (albeit not as pretty). Now that you've settled on a Bertram hull, understand the deep-vee effect on loading, ride and drift. You cannot load them too heavy. The bow can stuff in following seas. They trim, they burn fuel, they roll, but are awesome sea-boats. Decks are usually soft by now, but stringers should be okay. They really paid attention to lamination. Beautiful boat and best to you -sometimes working on them is as fun/rewarding as using them.
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12-29-2017, 08:32 AM | #33 |
Retired Comm. Shooter
Join Date: Sep 2002
Location: Largo, Florida
Posts: 5,140
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Those older Bertram’s are great hulls. Both Moose and Harvester made good points on weight and weight distribution. After looking at your drawing, I doubt you will be able to place that many scuba tanks that far forward as it will likely make the vessel quite bow heavy. If you place too much weight forward of the “break out point” of the hull, the boat rides too deep in the water and this will adversely affect speed and fuel efficiency. Plus like Harvester said, forward weight may cause your bow to bury in a following sea and this can be very dangerous. Older Bertram’s can be susceptible to this problem so you may want to be very flexible in your design options for tank placement. Give me a call and I will tell you a design for your fish box and tank storage that may help you.
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Ocean Rhino Spearguns: Designed & Built By Commercial Spearfishermen Manufactured By: Spearfishing Specialties (727)-548-7686 E-mail: oceanrhino@gmail.com Web: OceanRhino.com Last edited by Spear One; 12-30-2017 at 09:00 AM. |
12-29-2017, 03:10 PM | #34 |
Registered User
Join Date: Aug 2013
Posts: 92
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Dont let all these fuddy duddies mess with you, they are forgetting you are putting the heaviest parts 2-3 aft of where they were and normal tanks only weigh 40lbs so 4-5 equals 1 person in my world. If you are concerned do a float test after installing bracket and motors. That bertram is a bad dude, rides great but will never be fast. I would look into 115's if you can obtain cruise @ 75% throttle fully loaded. My biggest concern would be fuel capacity, I am thinking fuel mpg of 1.5 maybe a little better but always plan on worst case.
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12-29-2017, 09:42 PM | #35 |
Registered User
Join Date: Aug 2015
Location: Palm Harbor, FL
Posts: 953
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Thanks for the insight fellas. Sometimes it's good not to be first and fortunately there are a number of people with build threads that have gone through the trial and error process on this hull.
I realize this boat will not be a speed demon, but I'm more interested in a nice ride in while everyone else is getting pounded. Weight is going to be a consideration, but given the fact the factory offered this hull in a heavy fiberglass flybridge option with twin v8 v drives in the belly, settees, sinks and cabinets, etc, I think I can keep her well under weight, especially by using Coosa and Nidacore, where appropriate. Here's an interesting write up on weight regarding this hull. http://www.cssims.com/25%20Bertram%2...t%20Budget.htm I've also heard these hulls had a tendency to be light in the bow and would bounce a bit. Consequently, the solution was to add concrete or lead in the anchor locker. If you like boat porn, here's an awesome B25 project build. https://www.thehulltruth.com/boating...storation.html This one came out very nice and provides some inspiration. No fish box though. Maybe my design is too optimistic. |
12-30-2017, 02:12 AM | #36 | |
Registered User
Join Date: Oct 2007
Posts: 1,720
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quote:
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12-30-2017, 08:02 AM | #37 | |
Retired Comm. Shooter
Join Date: Sep 2002
Location: Largo, Florida
Posts: 5,140
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quote:
That Hull Truth rebuild resulted in a beautiful vessel. However, his design and weight distribution was quite different than what you are planning. If I were about to invest the kind of time and money in a rebuild like you are about to undertake, I would do everything possible to make sure the end result has a very high likelihood of meeting my needs and expectations. When you decide to tackle a project like this, you will make mistakes along the way and that’s to be expected. It will cost more and take more time than you estimated and that’s ok too, it’s normal. However once you are finished, you will have a great sense of pride and satisfaction that you built this boat and that feeling is what made the whole process worth it. Good luck on your build and please keep us posted on your progress.
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Ocean Rhino Spearguns: Designed & Built By Commercial Spearfishermen Manufactured By: Spearfishing Specialties (727)-548-7686 E-mail: oceanrhino@gmail.com Web: OceanRhino.com Last edited by Spear One; 12-30-2017 at 09:01 AM. |
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12-30-2017, 08:25 AM | #38 | |
Registered User
Join Date: Aug 2015
Location: Palm Harbor, FL
Posts: 953
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quote:
The first step is to get that bottom paint off and begin prepping the exterior of the hull. |
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12-30-2017, 08:54 AM | #39 | |
Retired Comm. Shooter
Join Date: Sep 2002
Location: Largo, Florida
Posts: 5,140
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quote:
PS, make sure you have a high quality respirator with a charcoal filter and make sure you have a couple replacement prefilters and charcoal filters. Your lungs will really appreciate it. The rebuilding process involves contact with a lot of really toxic dust and fumes.
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Ocean Rhino Spearguns: Designed & Built By Commercial Spearfishermen Manufactured By: Spearfishing Specialties (727)-548-7686 E-mail: oceanrhino@gmail.com Web: OceanRhino.com |
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12-30-2017, 04:42 PM | #40 | |
Registered User
Join Date: Oct 2007
Posts: 1,720
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quote:
BTW, I'm also doing a complete build. Let's share. I definitely need schooling on lightweight construction. Being a dinosaur, I grew up working on wood and heavy projects that gave strength and durability, not necessarily svelte, fast efficient runners. <a href="http://s52.photobucket.com/user/shaver2098/media/IMG_0026_zpsz91w0ggy.jpg.html" target="_blank"><img src="http://i52.photobucket.com/albums/g3/shaver2098/IMG_0026_zpsz91w0ggy.jpg" border="0" alt=" photo IMG_0026_zpsz91w0ggy.jpg"/></a> <a href="http://s52.photobucket.com/user/shaver2098/media/P3130085.jpg.html" target="_blank"><img src="http://i52.photobucket.com/albums/g3/shaver2098/th_P3130085.jpg" border="0" alt=" photo P3130085.jpg" style=""></a> <a href="http://s52.photobucket.com/user/shaver2098/media/P1200527.jpg.html" target="_blank"><img src="http://i52.photobucket.com/albums/g3/shaver2098/th_P1200527.jpg" border="0" alt=" photo P1200527.jpg" style=""></a> Last edited by HARVESTER; 12-30-2017 at 04:56 PM. |
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12-30-2017, 05:27 PM | #41 |
Registered User
Join Date: Jun 2013
Location: New Port Richey FL
Posts: 1,984
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
James, I assume rear seating will be beanbags?
BTW - how do you think the hull will handle our wonderful short-wave period 1-3 foot chop? Last edited by grey2112; 12-30-2017 at 05:46 PM. |
12-30-2017, 06:28 PM | #42 | |
Registered User
Join Date: Aug 2015
Location: Palm Harbor, FL
Posts: 953
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quote:
I will definitely update my progress here. |
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12-30-2017, 06:42 PM | #43 | |
Registered User
Join Date: Aug 2015
Location: Palm Harbor, FL
Posts: 953
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Quote:
I think she'll cut through it like butter. I'm expecting her to turn "iffy" days into, "let's go!" At least that's what all my research suggests. Original deep vee, strong heavy hull. She'll probably suck and be tipsy in the drift or anchored, but we don't drift or anchor when diving so really overnight on anchor may be a little less than ideal, but that's part of the deal with boats, right. Gotta give something up to get something in return. |
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01-10-2018, 09:32 AM | #44 |
Registered User
Join Date: Aug 2015
Location: Palm Harbor, FL
Posts: 953
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
So, I'm having the engines, outdrives and fuel tanks pulled this week. I got a few quotes and most were really high, but one came in so cheap it would cost me more to buy chain hoists and tie up everybody's time.
If anyone knows someone looking for Alpha One outrdrives, I have a pair in clean, but unknown condition. I will pull the hardtop and start prepping to do the transom. Then we'll start laying her out. One nice positive of an old boat is when you register her you can claim it's an antique and only pay about $8/ year. My trailer will cost me more than the boat every year. |
01-10-2018, 12:09 PM | #45 |
Registered User
Join Date: Aug 2012
Posts: 117
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Re: Project Boat Discussion: Tips, Ideas, Mistakes...
Only thing is to be antique registered it has to be powered by original style engine and year engine as boat.
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