Lines and drawings

I am working on a project for kids and am introducing them to some basics of reference lines of a ship but preferably a sub. I am looking for a good explanation with a diagram of the center line, frame lines, and buttock lines. Thank you.

 

Welcome to the forums.
Most modern submarines don't have traditional lines plans like you are thinking. They are bodies of revolution and everything else is an appendage.
Additionally, a lot of submarine technology (which includes shapes) is covered by the International Treaty on Arms Reduction (ITAR) as almost all submarine technology is dual-use.

Now, WWII subs is a different mater. Try here for Ship Information Booklet (SIB) and Training Aid Booklet (TAB) pictures.
Submarine Photo Index https://www.navsource.org/archives/08/08212b.htm
Researcher@Large - USS Roncador SS-301 Booklet of General Plans Drawings http://www.researcheratlarge.com/Ships/SS301/Plans/

 

Thank you for the info. Will check it out. What about for ships? Looking for a good explanation with a diagram of the center line, frame lines, and buttock lines.

 

Try this website.

How to Read a Ship Plan https://www.themodelshipwright.com/prototype-shipbuilding/how-to-read-a-ship-plan/

Edit to add: Just make sure you understand the difference between stations (used on the lines plan to define the hull shape), sections (used to show internal structure), and frames (i.e. the actual physical structure that forms the transverse hull shape). So while a 400 ft long ship lines plan may have 10 stations to define the hull shape, there might be 200 or more actual frames detailed on the construction plans that need to be picked off the loft floor to make up the physical hull.

Boats for Beginners - Navy Ships https://man.fas.org/dod-101/sys/ship/beginner.htm
Nomenclature of Naval Vessels https://www.history.navy.mil/content/history/nhhc/research/library/online-reading-room/title-list-alphabetically/n/nomenclature-naval-vessels.html

 

If you want want some examples that are easy to understand and visualize, try Ruel Parker's Sharpie Handbook.
For a bit more advanced examples, try 100 Boat Designs Reviewed. Both are widely available and very affordable as used books.

 

This book by John Teale is also an excellent introduction to boat design -
https://www.amazon.com/How-Design-Boat-Power-Sailmate/dp/1408152053/ref=sr_1_1

If you scroll down on the 'read sample' link (under the photo of the cover) it shows a very basic and simple lines plan introduction.

Or you could buy a secondhand copy of an older edition for $ 3 - this is the edition which I have a copy of.
https://www.amazon.com/Design-Boat-Sailmate-John-Teale/dp/0713635290/ref=sr_1_3

 

Thank you all for your help.