Free!
 
Here is a downloadable scan of official US Navy Booklet of General Plans drawings of the Balao-class submarine USS Mapiro SS-376 (TCG Pirireis S-343 in Turkish service) in her Fleet Snorkel Program (SCB 47B) configuration prepared by San Francisco Naval Shipyard dated 7 December 1959.
 
The original scan was obtained from the US National Archives and Records Administration by Mr. Ed Zajkowski and graciously donated to the San Francisco Maritime National Park Association for release to the public.
 
Click here for more San Francisco Maritime National Park Association ship plans.
 
Add to cart and order as if this were a model.  You will be able to download the plans as a *.pdf file after ordering at no cost to you.
 
Notice: these plans may not print at the scale stated on them due to the scanner settings chosen when the plans were originally scanned.