Happy Holidays All!!!
krgf15:
As you may know, I am converting plans that I was kindly given of USS Permit to USS Greenling. I am maintaining a Build Log that you may find interesting at:
viewtopic.php?f=59&t=125875&start=20
Early on I was looking into the class and researching their characteristics and found some information that may be useful to you. I can�t 100% vouch for the accuracy of the information since it came from various sources on the internet, but I think it is probably fairly accurate.
First you can order a print of all of the Thresher/Permit class on-line for $25 at:
http://www.warart.com/index.php?crn=52& ... how_detail
Here's a low res version:
Using this print, and other Web sources I came up with the following table showing which subs had what size hull and sail.
Permit/Thresher Class Submarines
SSN USS Hull Sail
593 Thresher S S
594 Permit S S
595 Plunger S S
596 Barb S S
603 Pollack S S
604 Haddo S S
605 Jack XL S
606 Tinosa S S
607 Dace S S
612 Guardfish S S
613 Flasher L L
614 Greenling L L
615 Gato L L
621 Haddock S L
The Hull sizes are as follows:
S � Short: 278' 6"
L � Long: 292' 3"
XL � Extra Long: 297' 4" (Jack only)
The difference in length between the short and long hulls is 13�9�, which at 1/350 scale is 0.47�. I don�t see any reason why you couldn�t slice the hull and add a plug right behind the sail, as long as you can get a cut vertical to the long axis of the hull.
As for the sails, I never found any actual dimensions on-line, but from the plans I have, the small sail has the following dimensions:
Thresher/Permit Class Small Sail Sizes
Length: 20.80�
Height: 13.90�
Width: 4.17�
At 1/350 scale, the dimensions would be:
1/350 Scale Thresher/Permit Class Small Sail Sizes
Length: 0.71�
Height: 0.48�
Width: 0.14�
To get the large sail dimensions, I used the print. Below are 2 images from AutoCad. The top image shows the print scaled so that the hull length of Thresher matched the length of the plans. Note that the sail from the plans matches the size and location of the print nicely. The bottom image shows the same scaled print but realigned so that the print was aligned with the hull of Greenling, which was modified by adding the 13�9� to the �pipe� section of the hull. Note that the print length matches the modified plan length spot on. Also note that the sail of the Greenling on the print is clearly larger and moved slightly forward of the Thresher sail.
Assuming that since the print was accurate in the hull lengths and Thresher�s sail that it also accurately portrayed Greenlng�s sail I traced the sail on the print onto the AutoCad plans.
As both a check on the sail dimensions, and to see where the sail plane should be located, I overlaid the sails and Thresher�s sail plane over an image of Gato scaled so that the length of the sail in the photo matched the Greenling sail traced from the print.
After scaling the photo, I moved it so that the upper forward corner in the photo matched the tracing. The results as you can see are pretty darn good. Note that the Permit sail is added for comparison in size and sail plane location only and is aligned so that the aft ends of the sails are aligned, and does not therefore show the relative location of the sails. You can also see the sail plane sections that I developed from the photo.
So, using this method, and what I would normally call BPJ for Best Professional Judgement, but since I am by no means a professional at modeling or naval architecture, I�ll call it BMJ for Best Modeler�s Judgment, to determine the sail width, I came up with the following dimensions for Greenling (and all other large sails):
Thresher/Permit Class LargeSail Sizes
Length: 26.85�
Height: 13.90�
Width: 4.76�
At 1/350 scale, the dimensions would be:
1/350 Scale Thresher/Permit Class Large Sail Sizes
Length: 0.71�
Height: 0.48�
Width: 0.16�
Ii have no idea how accurate these really are, but it is the best I have come up with. If you find something better, please let me know. In the mean time, here are the results of using the dimensions provided. The first image is of my �model� sail from roughly the same perspective as the Gato photo above. The second one shows it from various perspectives, and the last one shows the entire ship in it's rough state and "painted".
I hope this helps, and good luck with whatever you end up doing.
CHEERS!!!
