Right, from now on its going to be thus:
Unit (country where built) (current users) - notes
Naval Units
SSN: Attack Submarine (Nuclear-Powered) - some of the most modern ones can carry Cruise Missiles for land attack
- Astute class submarine (UK) (UK) (first boat in commission 2009)
- Trafalger Class submarine (UK) (UK) - non buildable starting unit
- Swifture class submarine (UK) (UK) - non buildable starting unit
- Virginia class submarine (US) (US)
- Seawolf class submarine (US) (US) - non buildable starting unit
- Los Angeles class submarine (US) (US) -non buildable starting unit
- Graney class submarine (Russian Federation) (Russia) (in service 2010)
- Akula class submarine (USSR) (Russia\India) - non buildable starting unit
- Sierra I&II class submarine (USSR) (Russia) - non buildable starting unit
- Victor III class submarine (USSR) (Russia) - non buildable starting unit
- Barracuda class submarine (France) (France) (first boat in commision 2016)
- Rubis class submarine (France) (France) - non buildable starting unit
- Type 093 submarine (PRC) (PRC)
- Type 091 submarine (PRC) (PRC) - non buildable starting unit
SSBN: Ballistic Missile Submarine (Nuclear-Powered) - Carries 6 SLMBM's
- Vanguard class submarine (UK) (UK) - non buildable starting unit
- Ohio class submarine (US) (US) - non buildable starting unit
- Borei class submarine (Russian Federation) (Russia) - first commisioned 2008
- Red October Class (USSR) (US) - non buildable starting unit
- Typhoon class submarine (USSR) (Russia) - non building starting unit
- Delta III & IV classes (USSR) (Russia) - non buildable starting unit
- Le Triomphant class submarine (France) (France)
- Type 094 submarine (PRC) (PRC)
- Type 092 submarine (PRC) (PRC) - non buildable starting unit
- Advanced Technology Vessel (India) (India) - commisioned in 2012
SS: Attack Submarine (Diesel-Electric Power) - some of the most modern classes can carry cruise missiles for land attack
- Lada class submarine (Russia) (Russia)
- Kilo class submarine (USSR\Russia) (Russia\Algeria\PRC\India\Indonesia (arriving 09)\Iran\Poland\Romania) - non buildable starting unit
- Romeo class submarine (USSR) (Russia\PRC\Bulgaria\China\Syria\Egypt\ Nrth Korea) - non buildable starting unit
- Foxtrot Class (USSR) (India\
- Type 214 submarine (Germany) (South Korea\Greece (due to commision soon)\Turkey)
- Type 212 submarine (Germany)
- Dolphin class submarine (Germany) (Israel) - non buildable starting unit
Ula class submarine (Germany) (Norway - non buildable starting unit
- Type 209 submarine (all sub classes produced by Germany)
-1500 (Brazil\India\Portugal (in service 2009))
-1400 (Brazil\Chile\South Africa\Turkey)
-1300 (Ecuador)
-1200 (Colombia\Greece\Indonesia\South Korea\Peru\Turkey\Venezula)
-1100 (Argentina\Peru\Greece)
- Type 206 submarine (Germany\Italy) (Germany\Italy)
- Södermanland\Västergötland class submarine (Sweden\Singapore) - non buildable unit
Gotland class submarine (Germany) (Sweden) - non buildable starting unit
- Kobben class submarine (Germany) (Poland) - non buildable starting unit
- Collins class submarine (Australia) (Australia) - non buildable starting unit
- Upholder\Victoria Class Submarine (UK) (Canada) - non buildable starting unit
- Scorpène class submarine (France\Spain\under licence in India) (Chile\India\Malaysia)
- Daphné class submarine (France) (Albacora class Portugal) -Non buildable starting unit
- Agosta 90B class submarine (France) (Spain\Pakistan) - non buildable starting unit
- Tench class submarine (US) (Taiwan) - non buildable starting unit
- Nahang class submarine (Iran) (Iran)
- Yugo class submarine (Iran) (Iran) - non buildable starting unit
- Sauro class submarine (Italy) (Italy) - non buildable starting unit
- Harushio class submarine (Japan) (Japan) - non buildable starting unit
- Oyashio class submarine (Japan) (Japan) - last boat commisioned in 2008
- Walrus class submarine (Netherlands) (Netherlands) - non buildable starting unit
- Hai Lung\ Zwaardvis class submarine (Netherlands) (Taiwan) - non buildable starting unit
- S-80 class Submarine (Spain\UK) (Spain) -in service 2011-2014
bloody hell that took me 2 hours!
there is an alternative to non buildable thing, for more recent units the player can decide to build more of them however the first unit built of that paticular class will take 5 times the build time what any following unit of the same class would take, this will acurately reflect the real problems and expense of setting up an entire production line\machining parts\r+r & training.
although for all units pre 1990 I feel that they should not be buildable at all, it would be illogical to build 18+ designs if newer ones are available