ParanoidGamer said:David Drake's (http://david-drake.com/bibliography.html) RCN is the Royal Cinnabon Navy. (possible bad spelling). The first book is "With the Lightnings" and introduces Lt. Leary, the central character of at least the first few books (I'm still on book 2, "Lt. Leary Commanding").
A list of the books in this series can be found at http://david-drake.com/RCN.html
For STL/Normal Space it is much like the Harringtonverse in that it is like the 'age of sail', in like that ships have momentum and a vector and don't turn on the dime due to inertial-less drives or some such thing.
A great game for realistic starship combat is the "Saganami Island Tactical Simulator" (or SITS) published by Ad Astra games (http://www.adastragames.com/products/adastra/sits.html). Once you get the hang of how it handles 3D combat (yes, 3D!) the game plays quickly and is quite a bit of fun.
Cinnabar, though I kinda like your spelling. Mmmmnnn Cinnabon...
For those who do not know, Baen (Harrington and RCN series publisher) hands out a LOT of their old books as free downloads. First book for HH is On Basilisk Station and the first RCN is (as stated) With the Lightnings.
EDIT:
Looks at Deniable's post. What he said. I guess I should have refreshed after I got called away from the computer.