Where would anyone be without a space travel? Humanity is no longer confined to a single planet but due to the lack of any faster-than-light means of travel, any travel beyond the New Helios system is only reserved for specially conceived long range vessels.
Ships are divided into several classes according to their size, armament and ability to enter, leave and maneuver in atmosphere.
Tiny Ships (10 to 200 Tonne)
*Shuttles are two to eight person crafts made for small travel or landing in tight spots where the attached ship cannot go. Alternatively, they are used to transfer goods and people between large ships and stations not meant to dock them. Shuttles typically do not feature personal quarters other than for 2-seaters.
*Fighters are attached to cruiser or larger ship or space station. They do not feature life support and only have a maximum of 24 hours of autonomy. They carry small weapons and are usually deployed in wings to attack, used for escort or orbital patrols. Fighters are either equipped with heavy weapons and serve as bomber or smaller ones to be used as interceptors. Fighters are not able to survive planet fall or operate in atmosphere most of the time.
*Maintenance Pods are fighters who's equipment has been replaced with tools to perform repair and in-flight resupply.
*Boarding Pods are a shuttle variation that are equipped with a magnetic grapple, a fusion cutter and are meant to send boarding crew into large vessels. Another version of this are the 'suicide pods' where single men are shot like torpedo in miniature breach vessels.
*Life pods while technically not a ship are considered small vessels. Life pods are however not a survival guarantee as they do not posses the means for more than one to three days of life support and only minimal trusters. They are capable of surviving planet fall if not too damaged and are otherwise meant to be picked up by companion vessels. Life pods serve little purpose in the big empty and are meant to be used close to fleets or planets.
Small Ships (1000 to 5000 tonne)
*Liners and Freighters are similar ships but fitted to handle either passengers, cargo or a mix of both. Both of whom are unarmed. (Those ships also exist in other size class, but begin at small sized.)
*Corvettes are the small military vessel that have a high speed and light weapon, mostly meant for quick movement. Corvettes are popular with smugglers and freelancers due to their high speed.
*Destroyers are slightly bigger than Corvettes and feature a heavier armament and armor but are primarily equipped with short range weapons as their primary purpose is to protect other ship's flank.
*Frigates are somewhat the same size as Destroyers but are armed for combat on longer range and serve as heavy cannon.
Medium Ship (5000 to 20000 tonne)
Medium ships usually require added detachable rockets to be able to leave atmosphere due to their massive weight.
*Cruiser are the standard military units and usually carry a strong weapon array, a six-unit fighter wing and are decently armored. Destroyers often accompany them.
*Assault Carriers only pack light point defense armament but carry four wings of fighter or bombers with them. A larger version carries eight wings with them.
*Suppression Ships are orbital bombers called in after the actual space battle, the ships are equipped with bombs and mass drivers to shoot down at settlements.
*Troop Carriers are a more humane means of seizing a planet, packing hundreds to thousands of soldiers in a small environment and deploying them with small drop ships and sometimes pods.
Large Ship (20'000 tonne and above)
Large ship as a rule are incapable of entering or leaving atmosphere and are built on spatial dry docks.
*Battleships are heavy duty combat vessels that are used for heavy hitting. They are also bricks and hard to destroy but very clunky. Battle ship also use fighters usually carrying two six-man wings.
*Dreadnought are called in when a message needs to be sent, these monsters rival the size of mass Carriers but are mostly weapons and armor. Dreadnough are typically over a kilometer long.
*Mass Carriers are somewhat different than their modern navy counterpart as they do not carry fighters normally but are used to carry smaller, slower ships or those with low range. They are effectively massive engine with cargo bays that hold transported goods or ships.
Ships are most typically powered with a fusion engine that use hydrogen batteries that generate both the energy used to power the ship's system and the propulsion. Although batteries have to be bought and manufactured, long range ships are equipped with scoops which allows to collect a small quantity of fuel while on transit. The plasma core of the engines are stable and when damaged beyond repair do not explode but spill, generally incinerating anything in the room in seconds and melting a part of the ship.
Most ships with the exclusion of tiny ships (Shuttles excluded) generate gravity although the field is not quite as powerful as most planet, ranging from 0.3g to 0.8 depending on the ship size and it's engines. While Inertia is largely reduced, it is not completely gone as such during fast accelerations and rapid turns, the crew is to be belted down.
Many space marines and all guild navigators are generally augmented to be able to resist the effect of G-LOC (G-force induced Loss Of Consciousness) which gives them the ability to intentionally cause G-force knock outs and easily pick off boarders.
Oxygen is created from a mixture of mechanical recycling filters and tanks of extremely durable and productive bio-engineered algae. The filters also recycle most of the water that the crew sweat, exhale or that evaporates. Ships are also equipped with secondary life support; huge tanks filled with various gasses to keep the air pressure normal and the CO2 level safe. Auxiliary life support is used when true life support is down or when pressure was lost due to a breach.
Wastes are generally partially filtered for water but have to be emptied at docks at regular intervals or jettisoned (and their tank replaced) Extremely large ships such as the Arks or Space stations have recycling systems that reuse almost everything.
Hulls are made of extremely durable materials and generally requires high speed collision with large mass (such as ramming maneuvers) or weapon blasts to seriously damage. Ships generally have reflective coating to protect against lasers but are vulnerable when the outer layer has been scrapped as armor is almost entirely abrasive, peeling off as it gets damaged. Atmo Plates are also installed on ships to ease the entry into a planet's atmosphere.