Having a little trouble identifying the Sheer on my Trawler 28 build

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MageDK
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Having a little trouble identifying the Sheer on my Trawler 28 build

Post by MageDK »

Afternoon all. I'm starting to build the Jig for my hull and I am going through all the instructions over and over. There is one part that I am having some trouble with.
the instructions say to mark the centerline, baseline and sheer on the molds.

The baseline is marked on the plans, and the centerline is straight forward but I can't seem to figure out where the sheer line is on each section.

I don't see it marked on the plans anywhere and I read the "Self Aligning Jig System" tutorial on the site, but it doesn't mention it.

any help is appreciated.



TomW1
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Re: Having a little trouble identifying the Sheer on my Trawler 28 build

Post by TomW1 »

MageDK the chine is the joint where the bottom and side meet. Here is a glossary for your use in the future. https://www.glen-l.com/resources/glossary.html Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

fallguy1000
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Re: Having a little trouble identifying the Sheer on my Trawler 28 build

Post by fallguy1000 »

Sheer is the bottom edge of the station jigs when the stations are upside down. Does that help or do you need dimensions?
My boat build is here -------->

viewtopic.php?f=12&t=62495

MageDK
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Re: Having a little trouble identifying the Sheer on my Trawler 28 build

Post by MageDK »

fallguy1000 wrote: Wed Aug 17, 2022 5:54 pm Sheer is the bottom edge of the station jigs when the stations are upside down. Does that help or do you need dimensions?

Since the stations include the full cross-section including the pilot house, etc. You basically just cut it off at the edge of the side and that becomes your sheer line?

like this?
https://drive.google.com/file/d/1aftzSq ... sp=sharing
Image

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cape man
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Re: Having a little trouble identifying the Sheer on my Trawler 28 build

Post by cape man »

Yes. The sheer line on a boat is the top of the sides, so doesn't include any superstructure like a cabin. It will define the lines of the boat when viewed from the side.
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TomW1
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Re: Having a little trouble identifying the Sheer on my Trawler 28 build

Post by TomW1 »

I goofed the sheer as described by cape man is correct. I will read your questions more carefully in the future. Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

fallguy1000
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Re: Having a little trouble identifying the Sheer on my Trawler 28 build

Post by fallguy1000 »

I can't answer any better than Capeman.
My boat build is here -------->

viewtopic.php?f=12&t=62495

MageDK
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Re: Having a little trouble identifying the Sheer on my Trawler 28 build

Post by MageDK »

thanks all. I just want to make sure I have everything right in my head before I start cutting wood this weekend.

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