Frigates:
Constitution Class Frigate - USA Unique Unit (Max of 6)
Warrior Class Ironclad Frigate - England

Modern Submarines:
Akula Class - Russia, India
Astute Class - England
Kilo Class - Russia, India, China, Poland, Persia, Indonesia
Los Angeles Class - USA
Scorpene Class - Brazil, Spain, India, Indonesia, Poland
Typhoon Class - Russia
Type 212A - Germany, Rome
Seawolf Class - USA
Ohio Class - USA
Virginia Class - USA

WWII Submarines:
U-Class - England
UBoat Type XXIII - Germany
I-400 Class Submarine/Carrier - Japan
U-20 Class Submarine - Austria

Destroyers:
Arleigh Burke Class - USA
Udaloy Class - Russia
Kongo Class - Japan
Wickes Class - USA, UK, Canada - WWI Era Destroyer
Narvik Class Destroyer - Germany - WWII Era

Battleships:
Tegetthoff Class - Germany, Austria - WWI Era Battleship
Iowa Class - USA - WWII & Beyond era Battleship (Can carry Sea based Helicopters and Sea based Missles)

Carriers:
Essex Class - USA - WWII Era Carrier
HMS Ark Royal - England - WWII era
Implacable Class - England
Shokaku Class - Japan

Amphibious Assault Ship:
Wasp Class LHD - USA Only - Carries Air based units, such as AH-1 SeaCobra, AV-8b SeaHarrier II, F-35B, UH-1 SeaHuey II, SH-60B
Amphibious Transport Ship(LHD) - GENERIC UNIT ALL CIVS

America Class LHA - USA - Carries LAND based units, such as Marines, Force Recon (new badass land unit), Paratroopers, as well as land based helicopters such as AH-1 Cobra, UH-60M Blackhawk, AH-64B Apache, Helicopter Gunship.
Amphibious Assault Ship (LHA) - GENERIC UNIT ALL CIVS

Cruisers:
Ticonderoga Class Cruiser - USA only (Can carry SeaHueyII, SeaRAM, SeaTomahawk & Sea Sparrow)
Pallada Class Cruiser - Russia, Japan - WWI Era Cruiser
Kirov Class Battlecruiser - Russia
Admiral Class Battlecruiser - England
Light Cruiser - Dresden Class Light Cruiser - Germany
Duetschland Class Cruiser - Germany - WWII Era

Corvette - Flower Class Corvette - England, USA, France, Multinational

Aircraft:
AH-1 SeaCobra - Multinational - Helicopter designed to be based in cities, airbases or Wasp Class LHD's. Acts like a bomber aircraft, excellent against armor, and can preform air recon. Intercepts at 1 tile. - GENERIC ALL CIVS
AV-8B SeaHarrier II - Harrier Aircraft for Amphibious Assault Ships only. - GENERIC ALL CIVS
F-35B Lightning II - Joint Strike Fighter with VSTOL ability, Amphibious Assault Attack Ship only.
UH-1 SeaHuey II - Same as SeaHuey but can deploy on Destroyers (only for now) - GENERIC ALL CIVS
SH-60B - Multinational - Helicopter designed to be based in cities, airbases or on Wasp Class LHD's.

Missiles:
SeaTomahawk - Cruise Missile, deploys on Destroyers
SeaRAM - Rolling Airframe Missile - Deploys on Destroyers (can intercept aircraft, packs a wallop)
Sea Sparrow - Deploys on Destroyers (can intercept aircraft, earlier tech missile)
Tomahawk Missile - Acts like regular missile, but with extended range and no resource requirements.

Ground Units: ---
Continential Marines - USA
Redcoats - England
Civil War Marines - USA
Great War Marines - USA
Modern Marine - All Civ's - Information era Marine unit upgrade from default game

Special Forces:
Force Recon Marines - USA
Royal Marine Commando - England
US Navy SEALs - USA
Special Forces - Unique Art for (African, Asian, European, Middle Eastern, South American) - ALL CIVS
Spetsnaz - Russia Special Forces

Steam Powered Battleships:
Braunschweig Class - Germany
Connecticut Class - USA
Erzherzog Karl Class - Austria
Majestic Class - England
Mikasa Class - Japan
Potemkin Class - Russia
Re Umberto Class - Rome
Republique Class - France
Generic Pre-Steam Battleship - All Civ's - This unit is for all civ's that don't have a specific Pre-Steam Battleship

Unique Galleons
-Danish
-French
-Greek
-Italian
-Portugal
-Russian
-Swedish