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1986 Bertram 42 Fiberglassed in tank???

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1986 Bertram 42 Fiberglassed in tank???

Old 01-17-2020, 10:39 AM
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Default 1986 Bertram 42 Fiberglassed in tank???

I saw a friends 86 Bertram 42' the other day and was a little confused by the tank configuration. I noticed it had what looked like a fiberglassed-in fuel tank midships forward of the engine space. I have never seen a fuel tank that was fiberglassed in. I am pretty sure it was indeed a fuel tank and not a potable water and definitely not the holding tank. Does anyone have any insight or diagrams?
Old 01-17-2020, 12:03 PM
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Yes bertrams had fiberglass tanks
Old 01-17-2020, 12:24 PM
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Definitely a fiberglass tank. Bertram fiberglass tanks are far superior to aluminum tanks.
Old 01-17-2020, 12:40 PM
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yes they are fiber glassed tanks and good ones at that . the only problem that arises is when you have gas motors and start using gas with ethenal . diesel boats like the 42 - no problem
Old 01-17-2020, 09:55 PM
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That's a 200 gallon fuel tank.
Old 01-19-2020, 06:57 AM
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Thank you guys! I did not know that fiberglass tanks like that were allowed under ABYC recommendations? This particular tank had a leak and was no good....
Old 01-19-2020, 10:49 AM
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When i first read this I thought you meant it was fiberglassed to the boat.

my 31 has a 220g fiberglass tank.
Old 01-19-2020, 11:30 AM
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There is a Bertram in Miami Craigslist this am that was priced to be a sweet project boat this am.
Old 01-19-2020, 02:14 PM
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Originally Posted by Budward View Post
Thank you guys! I did not know that fiberglass tanks like that were allowed under ABYC recommendations? This particular tank had a leak and was no good....
Was it loose and moving around in the boat? I'm a big fan of fiberglass fuel tanks and have made a lot of them for both diesel and gas, I've never seen one developed a leak it wasn't a manufacturing problem.
For a diesel boat, I think that progress makes the best fuel tanks, I would say the same for gas if it weren't for ethanol.
I have fiberglass tanks in my own boat that was made with a resin that is rated for 15% ethanol @100°F.
Gerald
Old 01-19-2020, 03:02 PM
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I too thought you meant the tanks had been physically restrained with glass. The boat I own now has an aluminum tank restrained by a layer or two (translucent) of glass. First time I'd seen that.

Seems clever enough. Time will tell.

Old 01-29-2020, 05:53 PM
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It sure appeared as though it was secured with glass.
Old 01-29-2020, 06:26 PM
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It was secured with glass, and is made with glass

just like the tanks that store fuel at the gas stations
Old 01-29-2020, 06:48 PM
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plenty of boats have fiberglass tanks, viking is another one that has fiberglass fuel tanks. what is leaking on your friends tank? they are pretty much indestructible

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