General: humanity spent significantly longer than usual compared to other species as a interplanetary/ interstellar non-eezo civilization and the late discovery of Ezoe (most civilizations take 10 to 40 years to discover Element zero, it took humanity nearly 400) has left an impact on the technology and ship design of humanity
Civilian ships: In comparison to most civilizations civilian vessels, humanities can be considered over gunned and over Armored. This is a remnant of humanities time as an inter-planetary/non-FTL civilization alongside their extremely advanced life support technology. In travel between planets and systems human ships were extremely vulnerable to astroids and the designs of human ships reflect that with high quality sensors to detect astroids, thick armor to absorb small hits, and weapons to deflect or destroyed them. This became a significant boon to humanities merchant fleet, as they could detect pirates farther out than most other species ships, and could defeat converted civilian vessels while having enough time to get away from former military vessels. Human ships also had superior life support systems allowing them to travel farther distances without ports of call, opening new markets unavailable to other species. This comes at a cost though, alien ships of similar size to human ships are generally of a lower cost because of the lack of these features. To compensate most human tankers and transports were significantly larger than contemporary alien ships, allowing economy of scale to even out the prices per cubic meter.
drones: drones are ubiquitous in human society and that does not exclude space. There are multiple different types of drones used by humanity in space. They are significantly cheaper than piloted vessels and can usually do the job better.
Construction drones: commonly used for space construction, they are significantly cheaper than their human counterparts and substantially superior in workmanship.
Mining drones: these drones are used to survey, sample, and extract mineral deposits on astroids.
Survey drone: Used commonly for the e exploration of systems, survey drones carry multiple different active and passive sensors to catalogue all significant objects in a solar system.
Combat drones: There are three separate classes of combat drone, light, medium, and heavy. They are each used for a different purpose and have different specifications.
Light: more commonly called interceptors, these drones are used as a extension to the defense grid of individual ships. The primary interceptor of the systems alliance at the time of the first contact war was the trident
Trident:
Length:14.5 m
Width:3.25 m
Height: 1.85 m
Armament:2 4x1x1 mass accelerator machine guns, two light ordinance hard points (5 cubic meters each)
Medium: Medium drones are generally used for patrol or reconnaissance. The primary medium drones of the systems alliance are the tanto patrol drone and the short sword scout drone.
Tanto:
Length:16 m
Width: 20 m radiators retracted,32 m with radiators
Height: 3.21 m
Armament: 1 multi megawatt chemical laser,4 medium ordinance hard points (20 cubic meters each)
Short sword:
Length:30 m
Diameter: 3 m (radiators retracted),15 m radiators deployed
Armament:n/a (equipped with advanced passive sensors) electronic warfare variant replaces sensors with electronic warfare equipment.
Heavy drones: heavy drones are designed with the sole purpose of destroying enemy warships. The only heavy drone in the systems alliance arsenal is the claymore
Claymore:
Length:30 m
Width:15 m
Height: 3 m (radiators retracted),16 (radiators deployed)
Armament: six heavy ordinance pods (60 meters cubed each)
Warships:
San Diego class frigate:
Length:289 m
Width:60 m
Height:40 m (radiators retracted), 120 m (radiators deployed)
Armaments:6,000 8x1x1 variable ordinance missiles in 400 15 round magazines, 8 point defense guardian lasers.
crew: 40, 24 ULIC
Background: named after the bloodiest battle in American history, the San Diego class frigates was designed to be the guardian angels of systems alliance fleet. Capable of being equipped with anti-ship nuclear shaped charge, Area suppression neutron bomb, and anti-Drone homing flechette warheads, The San Diego's missiles can support the fleet in multiple ways. The guardian lasers aboard the ship can be used to destroy enemy ordinance and drones. there are 144 San Diego class frigates in the systems alliance Navy at the time of the first contact war.
Geneva class cruiser:
Length:480 meters
Width:60 m
Hight: 80 m (main body),160 m (hammerhead), 200 (radiators deployed)
armament:1 432x40x40 553 kiloton mass accelerator, 1,000 40x2x2 anti-ship cruise missiles, 12 Guardian lasers
Complement: 5 squadrons of 24/16 light/medium drones, 4 raptor shuttles (Battlestar Galactica raptor)
Crew:180 personnel , 100 ULIC
Background: Named after the city of Geneva, The Geneva class cruisers are designed to stay at a significant distance from an opponent and pound away at them with its mass accelerator and cruise missiles, while staying protected by the thick armored hammerhead. 45 Geneva class cruisers were part of the systems alliance fleet during the first contact war.
Swordfish class light carrier:
Length:480 meters
Width:60 m
Hight: 80 m (main body),160 m (hammerhead), 200 (radiators deployed)
Armament:12 Guardian lasers
complement: 25 squadrons of 24/16/12 light/medium/heavy drones, 4 raptor shuttles (Battlestar Galactica raptor)
Crew:180 personnel ,100 ULIC
Background: named after the aquatic animal of the swordfish, Swordfish light carriers were designed to give cruiser and Battle groups increased reconnaissance ability, force projection, and defense against drone attacks. 12 are deployed with the systems alliance fleet, and 18 are deployed to system defense forces. The swordfish is built on the hull of the Geneva class cruiser with the mass accelerator and cruise missiles removed and replaced with hanger space
Everest class dreadnought:
Length 888 m
Width: 112 m
Height: 150 m (main body), 600 m (radiators deployed)
Armament:1 800x80x80 4.1 megaton mass accelerator,10,000 40x2x2 anti-ship cruise missiles, 64 guardian lasers
Complement:20 squadrons of 24 light drones, 10 raptor shuttles (Battlestar Galactica raptors)
Crew:1,250 personnel, 800ULIC
Background: named after the largest mountain on earth, the Everest class dreadnoughts were designed to be an unstoppable force and the flagship of every systems alliance fleet. Meant to be used in extreme range bombardment against enemy forces. only 2 dreadnoughts were active during the first contact war, The Everest, and the Fuji, with the Vesuvius under construction.
Danube class carrier:
Length: 600 m
Width:130 m (main body) , 350 m (radiators deployed)
Height:75 m
armament:32 guardian lasers
complement:75 squadrons of 24/16/12 light/medium/heavy drones,30 raptors
Crew:1,000, 480 ULIC
Background: Named for the river Danube, The Danube class carriers are designed to be able to assault enemy ships and positions from extraordinary distances away it using it colossal drone compliment.12 carriers were in service to the systems alliance during the first contact war.
Rapid class patrol torpedo boat:
Length:100 m
Width:40 m (main body), 80 m (radiators included)
Height: 24 m (Without turrets),27 m (with turrets)
Armament: 300 heavy ordinance pods, 12 Multi megawatt Chemical laser turrets (each has a 12 shot capacity)
crew:9
Background: And the rapid class PT boats I meant for use by system defense forces to conduct patrols and response to minor threats and they work in squadrons of eight PT boats. A total of 2400 rapid class PT boats were in operation at the beginning of the first contact war.
Heavy ordinance pod:
Length:15 m
Width:2 m
Height:2 m
Payload: four stacks each capable of containing either 3 5x1x1 Multi payload missiles, 5 3x1x1 acid filled breacher rockets, 1 15x1 nuclear missile (shiva warhead)
gunboats:
Length:N/A
Width: N/A
Height: N/A
Background: Gunboats are less a class or type of ship and more a concept, put old guns on a skeletal hull with with a reactor (or battery's), engines, and simplistic control VI. These ships then act like mobile orbital defense platforms for a lower cost than a purposed built ODP. They're are many types of gunboats, from the small Pahlawan class (30 m) equipped with 4 127 mm railguns stripped off of decommissioned USN ships, to the Niezwyciężony class (400 m) commonly called the cruiser harmonica for its 9 ,740 mm railguns stripped off the EUN's Warsaw class cruisers. There are three main classifications of gunboat:
light gunboat: Usually larger than a heavy drone to around the size of a PT boat, light gunboats are used to defend and patrol, minor, colonies or mining outpost. Many pirates use light gunboats built off civilian ships or purpose built and armed with railguns created in 3-D printers as their ship of choice. A notable light gunboat was the Liberty, previously the USS prestigious. The liberty was used in the third American Civil War by a anti-argumentation terrorist group called HLF (human liberation front) to attack pro augmentation colonies around Saturn until its destruction by the USS Chesapeake.
heavy gunboat: Around the sides of a PT boat, too slightly larger than I frigate, heavy gun boats are used to protect more important colonies than light gunboats. They are usually equipped with the removed, spinal mounted weaponry of cruisers.
Gunbarge: gun barges are the largest iteration of the gunboat concept, commonly the same size or larger than a cruiser, and usually out gunning one, Gunbarges are used for the protection of important colonies, and sometimes used in fleet battles alongside cruisers. The most famous Gunbarge to ever exist in human space was the Overlord, 790 m flagship of the Galilean Liberation League, a organization that fought against the United States and European Union during the Jovian wars (1'st 2205-2211, 2'nd [When the Overlord was the flagship] 2221-2230). The Overlord was constructed from components and weapons from over 30 destroyed ships leading to an extremely powerful, but maintenance intensive warship. The Overlord was eventually destroyed during the battle of Ganymede when it was attacked by heavy drones from the USS John Johnson, and USS John Paul Jones.
Lion class assault carrier:
length: 600 M
Width: 200 m
height: 50 m (58 m with dropship attached)
armament: 20 guardian lasers, 2400 ground support missiles, 100 high penetration orbital strike missiles,
crew: 1200,
Complement: 6400 ULIC, 1600 heavy infantry fighting vehicles, 240 drone gunships, 100 heavy dropships
background: designed for planetary assault, the lion class assault carriers are more a Ftl capable tug for its 100 Raven class heavy dropships, each capable of holding a Battalion of robots. Only 6 are operated by the systems alliance military. Complex computers on the ship control and coordinate the robots on the ground.
Scimitar class heavy dropship:
length: 45 m
width: 26 m
height: 8 m
armament: N/A
crew: N/A
complement: 16 heavy infantry fighting vehicles and 640 ULIC (one battalion) Or 16 tanks
background: designed to get an entire battalion of marine robots on the ground, the raven class heavy dropship is relatively bare-bones. Consisting of a reactor, 4 heavy lift engines attached to the side in pods capable of rotating 90, fuel, and it's payload of troops. Due to the lack of defenses, they must be escorted by light drones to the drop zone, but due to their extremely low cost and lack of human crew, losing even dozens of them in an assault are considered acceptable losses.
Carthage class strategic warfare cruisers:
Length:450 m
Width: 18 m
height: 92 m
armament: 20 phoenix interstellar strategic missiles
Background: named for destroyed cities in human history, the Carthage class was originally designed by the systems alliance in case of the discovery of an alien threat that required significant planet wide destruction. Well, the classes existence is known to the public, the locations of the five ships of the class (SSV Carthage, SSV Pompeii, SSV Hiroshima, SSV, Nagasaki, and SSV Annapolis,) are always obscured, with the ships hiding in Oort clouds or interstellar Space. Due to the possibility that their ordinance would be required to be used after the extinction of humanity(and thus any chain of command), the captains have full capability to launch there payloads. Each of the captains were thoroughly screened for extreme loyalty to humanity over loyalty to individuals, or even the government, and integrated with their ships permanently.