Yes they are very similar to the British MRS-3 system which were based heavily on the USN Mk 56 GFCS
www.shapeways.com/product/265C…
www.shapeways.com/product/265C…
Thank you very much! I didn't know you knew shapeways. I have a shop there.
I just stumble upon that site when I search for equipment drawings but as they don't provide top and side views I don't find them useful
but sometimes I can check the little details.
I only draw not build these ships.
Oh well I do that with your drawings 
if you don't mind. I really love your works and I find them very useful to build paper ships.
if you don't mind. I really love your works and I find them very useful to build paper ships.