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| Marble Head Schooner AKA "Sir Edward Hawke" CAD Drawings | ||
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Moderators: Winston, aew
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| Author | Post | ||
| daves |
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 Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | did you see the last posting on the bodyplan over at the other topic? The one you show here is not right | ||
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| trippwj |
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 Registered Member #2648 Joined: Fri May 25 2012, 08:14pmPosts: 256 | Probably just muddying the waters here, but in his American Ships of the Colonial and Revolutionary Periods (1978), John Millar has a set of lines for the Sir Edward Hawke based on the NMM plans (pages 261-262). The masts are shown with a pretty strong rake (but not to the degree you show). Interestingly (is that a word?), he drew it with the keel parallel to the baseline and the waterline at an angle. The station lines appear to be perpendicular to the keel in his drawing. | ||
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| Gary M |
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| Registered Member #4198 Joined: Tue May 07 2013, 10:50pmPosts: 904 | Thanks, Wayne. The body plan is from Chapelle with an extra rail shown by Hahn. This being all said, I am going back to the original plans and will start a fresh drawing. No waters muddied. Keep the dialogue flowing. G | ||
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| Winston |
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winston  Registered Member #1 Joined: Sat Jun 13 2009, 02:08pmPosts: 2530 | This might help some. The original Marblehead plans from the NMM site. While the station lines are perpendicular to the keel, note that the waterlines are parallel to the actual water line.
Source: http://collections.rmg.co.uk/collections/objects/85876.html | ||
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| Gary M |
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| Registered Member #4198 Joined: Tue May 07 2013, 10:50pmPosts: 904 | Winston, Thank you for the plan link! I will buy them and start from scratch. I have learned so much this week and here I was, thinking this was going to be a break from the more complex drafting projects... Is it my imagination, or is the keel drag gone? When I trace these into CAD, I will overlay onto the Chapelle and Hahn plans to see How they compare. G [ Edited Tue Jan 06 2015, 06:40am ] | ||
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| daves |
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| Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | Gary M wrote ... Is it my imagination, or is the keel drag gone? yes you can say it is gone on this plan but when you level the waterline then it shows. My confusion, is the plan showing the vessel as it should look when afloat with the drawn rake on the masts and vertical sides to the gun ports and midship frame? when you level the waterline then all that changes. | ||
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| Winston |
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| winston Registered Member #1 Joined: Sat Jun 13 2009, 02:08pmPosts: 2530 | Does the rake of the mast on the drawing itself really mean all that much? According to Goodwin's "The Construction and Fitting......" pg. 167, the rake would have been included in the principal dimensions laid down by the Navy Board. On the previous page it also states that it was not uncommon for a "seasoned master" to adjust the rake to his own requirements, especially on smaller vessels. | ||
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| daves |
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| Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | I get what your saying about the rake of the masts. What I was thinking the guy who drew the original plan was he thinking "to the waterline" or not. anyhow this is very confusing and I just don't know how to lift frame shapes with a slanted keel or for that matter how to draw and build a model when the keel and lwl do not match. so I thought why not ask someone who might know. Here is a link to people who might be able to clear this up. It would be so much easier if one of them could read the topic rather than try to explain the issue. So either Winston or Gary contact all the people or one at a time and include a link to our topic. I would but my brain hurts from trying to figure this out I tried once before and gave up. http://name.engin.umich.edu/people/ good luck Gary you sure picked a tough project [ Edited Tue Jan 06 2015, 04:20pm ] | ||
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| Gary M |
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| Registered Member #4198 Joined: Tue May 07 2013, 10:50pmPosts: 904 | I am happy to take it to the next level. Thanks, G | ||
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| Gene Bodnar |
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 Registered Member #126 Joined: Tue Jul 21 2009, 11:20amPosts: 1778 | Take a look at the Bluenose practicum on the Projects page of MSB. Here, the keel and the lwl do not match. It is a matter of creating an imaginary baseline that is parallel to the lwl, and lofting all frames by using the baseline as your reference point for every frame. Of course, the jig that holds the frames and keel assembly must incorporate the slanted keel, not the imaginary baseline, and the top edge of the jig is built to accommodate the lwl. Gene [ Edited Tue Jan 06 2015, 07:38pm ] | ||
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