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CDR_Ret

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About CDR_Ret

  • Birthday 02/01/1950

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  • Gender
    Male
  • Location
    Colorado Springs, Colorado, USA
  • Interests
    The physical sciences; Worldview, science, and education; Technical and educational writing; Reading: Accurate historical fiction, classical science fiction, biographies; Wood carving and ship models; research projects relating to landform origins, especially the US East Coast Carolina Bays.

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  1. Just installed the latest free version of DELFTship (v. 13.10 (324)). It appears that there are a lot of improvements. Most obvious to the familiar user are revisions to the menu tabs. However, if you dig into the settings, the user now has the option of creating models in centimeters and inches as well as the standard meters and feet. You can also set the decimal precision, which is really handy, since the default was four decimal places. This update may be of interest to modelers, who can now create their digital models in the actual dimensions they will build in. Also, the devel
  2. I might be able to assist you. What kind of vessel are you working with? Sorry, had to reread your post again. The DELFTship offset import function is very buggy. If you do a search on the D/S website using "offset import" key words, you will find there is a long history of problems with the function in at least the Free version. To begin with, I would not try to create offsets of the entire hull and keel assembly. I recommend modeling just the hull between the sheer rail and inner rabbets of the stem, keel, and sternpost, as applicable. If the lobster boat has a propel
  3. This Christmas, 2020, saw the completion of a project I set for myself more than seven years ago—carving and finishing the final bug ornament. When my son and his wife started having children, they gave them insect nicknames—even before they were born: Bumblebee, Firefly, Lady Bug, Dragonfly, and Grasshopper. It occurred to me when they were still small (or even unborn, yet), that it would be fun to give them an ornament carved after their nicknames. So in 2013, I embarked on that project. This year saw the completion of the last insect ornament. Thought it would be fun
  4. Rik, if your main drafting interest is 2D, you may want to check out Coreldraw Suite 2020 for about $500 US or CorelCAD (2D and 3D) for around $700 US. Corel is also now offering month-to-month subscriptions. I have used Coreldraw Suites since v 3.0 back in the early '90s and have found them to be very intuitive compared to the Adobe products. Currently using Coreldraw X7 for drafting ship plans. Haven't tried CorelCAD. All of these programs permit free download trials to check them out. Terry
  5. Bob, I have found that to be true about a lot of things. I was 50 years old before I realized what an interesting character my grandfather was. He died two years before I was born, but I failed to sit down with my mother and try to understand who he was before she, too, passed. I'm trying to instill in my grandchildren an interest in their own parents' backgrounds and their family histories, and begin journaling at a young age. Their parents are all for that.
  6. Ah, this explanation makes more sense. I was viewing the term "triangular sail" in a much narrower way than necessary. And I probably gave the spreader/batten or whatever we can call it more significance than needed. Appreciate the clear and complete clarification, Bob. Terry
  7. Thanks for the link, Thanasis. If the two types of mainsails were contemporaneous, this might be a good solution. However, the differences of the sailing eras, their shapes, and construction suggest that another term might be appropriate. Even Bob's suggestion is problematic, though appreciated. The definition of "jib-headed," according to several contemporary dictionaries, is essentially "a point at the top of the sail, like a jib." The short spar at the head of Galilee's mainsail (as well as Matthew Turner's) doesn't leave a point with a single attachment fitting, like an eye or
  8. I hear you Imagna and I agree. However, I've been thinking of creating a model of USS Parche (SSN 683) for some 45 years in a decent-sized scale to show the cool details. This requires a hull around two-feet long or so. Because US Cold-War submarines had circular sections along their entire length as well as curvilinear profiles at bow and stern, one would need to be a master wood turner or have a milling machine attachment to the lathe or have a four-axis CNC milling machine such as the Shark CNC to do an accurate job . Having none of these, sadly, my model will have to wait. The
  9. This Fall has been busy with many birthday and Christmas projects, and the resumption of homeschool with my grandchildren. So not much time has been available for work on Galilee's plans. However, a recent topic regarding gaff-rigged sails in this forum reminded me that I haven't been able to identify Galilee's mainsail type. Basically, it is a leg-of-mutton sail headed by a short spar. The not-so-all-knowing Internet claims that brigantines and hermaphrodite brigs all carry/carried a gaff-headed mainsail. Here is Galilee in all her glory, courtesy of the Carnegie Scien
  10. I was contemplating adding a new comment to an existing thread when I clicked on the Reply field at the end of the thread. The entire text of my previous post appeared in the field. Is this an intentional feature? It's been more than a day since I posted last and have shutdown and restarted my computer, so I don't think this was leftover content on the Clipboard or anything like that. Besides, I never selected the entire post. —Terry
  11. Ah, Sea Stories. The things we could tell...
  12. Based on the novel "The Good Shepherd" by C.S. Forester.
  13. Thank you for the detailed response, Jaager. Now that I know what to look for, I went back to the DTM photos and discovered that there indeed appears to be a seam between the inboard waterway and the pieces filling in between the stanchions. That certainly makes a lot of sense. I appreciate your input. Terry
  14. Here is another structural question pertaining to late 19th-century merchant ships. In the 1891 brigantine Galilee, there were massive waterway timbers (11 in. by 15 in.) visible in the photos provided by the Department of Terrestrial Magnetism (ignore the albatross). It is apparent that the waterways, or something else, filled in the open space between the stanchions formed by the upper frames. My question is this: Were the waterways notched for each stanchion, or were there filling pieces (or whatever they are called) added to close off the spaces between
  15. And here is my reconstruction of the capstan and windlass installation in Galilee. Basically, the screw actuators that tensioned the band brakes on the windlass drum were replaced by pry bar-actuated rods that tensioned the band brakes. I'm still not satisfied with the results because the loops which the pry bar fingers engage are much closer to the base of the capstan in my model than shown in the cyanotype photo. So, either the linkage is at a different angle than in the model or there may be a different lever configuration relating to the band brakes themselves. I suspect that windlass inst
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