First Tau'ri ship the USS Prometheus was build largely from reverse-engineered Goa'uld technology. Prometheus played a huge role in the later stages of the Tau'ri-System Lords war. The ship was ultimately destroyed over Tegalus.
First of the new 304 class battlecruisers. Presented in every main conflict, except the Atlantis's last stand against Queen Death. Following the "Battle of the Frozen Planet", the Deadalus was refitted with additional hangar bay, allowing it to carry more supplies to now ZMPles Atlantis.
Third Tau'ri warship to be constructed, the Odyssey served, for better part of the decade, as Earths flagship. Following the raid on Atlantis by Quicksilver, Odyssey controlled the only ZPM available for the Tau'ri. It was later preferred to the USS Agamemnon, following its commission.
First non-US ship to ever be constructed. It was destroyed on its maiden mission in the Battle of P3Y-229. It took almost 13 years for Russia to construct a new ship, yet unnamed Flight II 304 class battlecruiser should enter service sometimes mid 2018.
Fourth Tau'ri warship, the Apollo was rushed into service moments before presumed Ori invasion of the Sol system. Following the activation of the Ark of Truth, Apollo proceeded to aid Atlantis in its conflict against the replicators. The ship was heavily damaged in the Battle of the Super-hive. The difficulty in repairing the damage, prompted IOA to establish Lunar base as first Tau'ri dry dock.
Second non-US ship. The Sun Tzu was heavily damaged in the Battle of the Super-hive. It was later cannibalized by the crew of USS Apollo and left adrift in the massive void between two galaxies. The ship was later salvaged by USS Deadalus.
USS George Hammond
Last of the Flight I 304 class battlecruisers. Named after deceased George S. Hammond, this ship played a vital role in the Queen Death war. The lose of Asgard beam weapons in the early part of the war, prompted a development of a new Asgard beam turrets, which are easier to service and repair.
First of the new 304 class battleships, the Austerlitz was direct response to the Queen death conflict,although entering service too late to participate in it. These mighty ships are designed to serve as flagships of Tau'ri battlegroups. They are not only the first Tau'ri ships to carry drone armament, but also the first to utilize the newly developed Beam turrets. EUS Austerlitz currently serves as the flagship of the Pegasus fleet. Enforcing the uneasy truce between Geni, Wraith and Tau'ri.
INS V. Radhakrishnan
First Indian-operated ship, and also the first of the new 304 class science vessels, the Radhakrishnan is scaled down version of the 304 battlecruisers. These science vessels doesn't carry any fighters, and the armament was reduced to the Beam turrets and Railguns. V. Radhakrishnan is currently searching the Milky Way galaxy for Icarus-type planet.
USS C. Langford
Second 304 class science vessel. With Atlantis's ZPM's gone, the Langford is currently searching the Pegasus galaxy for remnants of Lantean technology, in hopes that of the many words in Ancient database provides clues on how to build them. The ship is assigned to the Pegasus fleet, and is one of the three permanently assigned ships in Pegasus. The current commanding officer of USS Langford is Dr. Daniel Jacskon.
Second 304 class battleship, the Agamemnon is the current Tau'ri flagship, serving as both flagship of the Milky Way galaxy, and the entire Tau'ri navy. The ship carries Earths only ZPM which makes her the most powerful ship in the known universe. Although entering service in early 2015, it currently holds the record for "most ships destroyed", participating in basically every battle of the Tau'ri-Lucian Alliance war.
USS Endeavour and USS Challanger
First of the new 304 Flight II battlecruisers, the Endeavour and its sister ship Challenger are currently the most technologically advanced Tau'ri ships. These ships are presented as a cheaper alternatives to the 305 battlecruiser program. These mighty warships entered service only few months ago, and are still ironing all the kinks. They should enter service sometimes later this year.
The first, and possibly the last of the new 305 class Battlecruiser line. Its all around better at everything then the previous 304 class. Designed from the ground up with the asgard core in mind, this mighty warships will be the pinnacle of Tau'ri engineering. The project, which started in the early 2015, run into multiple setbacks costs almost unbelievable 75 billion dollars, not counting the USS Achilles unit currently in production. The program was scaled from original 7 ships to 5, to current 1, and with price tag of 23 billion dollars per unit, the future of this class is uncertain.