38 convertible and cored hulls

Post by **dougl33** » Wed Nov 30, 2005 3:20 pm

...btw, Coring in the topsides is OK. Its when its on the bottom that problems start to arise. I.E. Drilling extra holes for transducers and not bedding them properly. I wouldn't have any doubts about buying the boat (provided it surveys out all right!) Regards, Doug L. 1986 33 Bertram FBC Queen Elizabeth Marblehead, MA

photo finish · Post by **photo finish** » Wed Nov 30, 2005 4:47 pm

I think all the 37s had cored sides Tim Stamm Photo Finish 1981 33' Bertram FBC

Post by **dougl33** » Thu Dec 01, 2005 3:57 am

quote:Originally posted by photo finish I think all the 37s had cored sides Tim Stamm Photo Finish 1981 33' Bertram FBC Correct. Regards, Doug L. 1986 33 Bertram FBC Queen Elizabeth Marblehead, MA

Post by **Admin** » Thu Dec 01, 2005 7:21 am

Hmm, then what was a failure about it I wonder? David Sumich 33 Megabites Huntington Harbour, CA Forum Administrator

CB35 · Post by **CB35** » Thu Dec 01, 2005 7:23 am

Pasco is correct. Bertram did try some cored boats and they were all failures. Bertram did the right thing; buying them back and destroying them. This is a little known fact; but Pasco got his information right. Even Bertram made mistakes. Just look at the 20B's. Ever seen a dry one? Coring above is a good pratcice. I would always perfer a cored above the water line boat. They are quiter and better insulated. Buy the way I say one back in 1992 or 1993 or maybe 1994. It was a around fifty feet if I remember correctly. The boat kept sitting lower and lower in the water. It also stunk. The whole transom absorbed water and started to rot. That boat went back south never to be seen again. Charlie

gÃ©gÃ© · Post by **gÃ©gÃ©** » Thu Dec 08, 2005 10:07 am

have a look to http://www.yachtworld.com/core/fr/listi ... 19624&url= http://www.yachtworld.com/core/fr/listi ... ts=1131865&

Post by **dougl33** » Thu Dec 08, 2005 10:51 am

Ugh. The entire hull was stripped of its balsa core. That couldn't have been cheap. Regards, Doug L. 1986 33 Bertram FBC Queen Elizabeth Marblehead, MA

photo finish · Post by **photo finish** » Thu Dec 08, 2005 1:12 pm

Hey, I remember Good Bud from Davids slide show of Bertrams in his area. Tim Stamm Photo Finish 1981 33' Bertram FBC

franklyprice · Post by **franklyprice** » Thu Dec 08, 2005 5:25 pm

I saw an article on that boat about the repair process of stripping the core and replacing it. I think it cost somewhere around $200,000 to do the job. Not bad , considering... Frank Price

Don33 · Post by **Don33** » Fri Dec 09, 2005 3:15 am

quote:Originally posted by CB35 ...Coring above is a good pratcice. I would always perfer a cored above the water line boat. They are quiter and better insulated. Charlie FYI....from Bertram's website: "Above the waterlines, the hull sides of a Bertram are fully cored utilizing a state of the art process called vacuum bagging. The high density core is vacuum bagged into place creating a very light, yet structurally strong composite. This same process is also utilized on the deck, ensuring equal distribution of pressure during the installation of the core as well creating the optimum glass to resin ratio. This Provides not only higher strength to weight ratios but for both greater thermal and acoustical advantages as well."