Gravship

For the endgame ship, see Ship.

For trade ships, see Trade ship.

Gravships are a new method of traversal and living introduced by the Odyssey DLC.

Grav engine	Gravship substructure	Gravship hull	Small chemfuel tank	Large chemfuel tank	Small thruster	Large thruster
Pilot console	Grav field extender	Signal jammer	Gravcore power cell	Fuel optimizer	Gravship shield generator	Pilot subpersona core

Summary

A functional gravship requires various parts in order to be spaceworthy. A gravship begins with a grav engine, and various structures and walls can be connected to the grav engine via gravship substructure, which acts as the floor of the gravship. Anything built on the connected substructure will be considered part of the ship and brought along upon launch.

At the very minimum, a gravship requires only one small thruster, one small chemfuel tank, a pilot console and a grav engine with enough gravship substructure to connect all of the mentioned parts. A gravship of this calibre is able to travel between tiles of the world map, akin to a portable transport pod or shuttle. However, attempts to travel to locations in orbit without the protection of gravship hulls or vacsuits will be met with a swift end.

A list of fundamental parts are listed below:

• Grav engine
• Gravship substructure
• Pilot console
• Small chemfuel tank or Large chemfuel tank
• Small thruster or Large thruster

A gravship also comes with various limitations and constraints:

• The grav engine can only initially support up to 500 tiles of gravship substructure, all of which can only be built within a radius of 19 tiles around the grav engine originating from its center.
  • This limitation can be improved using grav field extenders. Each one added to a gravship increases this limit of buildable tiles by 250 tiles, up to a maximum of 2000 supported tiles with 6 grav field extenders. Grav field extenders themselves have a supported radius of 17 tiles.
• Any substructure built beyond the limit supported by a grav engine will be left behind upon launch, including anything or anyone standing on said substructure.

When desiring to launch the gravship into orbit, additional preparation is required in order to make the gravship spaceworthy in a sense that the crew can survive sufficiently in the absence of an atmosphere. The research Orbital tech will allow pawns to build orbital scanners, oxygen pumps, and vacsuits that protect against the vacuum of space.

Analysis

Obtaining a Gravship

To start building a gravship, a grav engine must be obtained either by beginning the game with the gravship start scenario, or obtaining the grav engine via a quest that will cause a grav engine to fall onto the map from space. The grav engine can then be inspected and reinstalled at a more convenient location in order to further expand it.

To add structures and walls such as gravship hulls, gravship substructure must be placed underneath and must be connected to the grav engine. Gravship substructure can be placed using gravlite panels which will be given during the initial grav engine quest. Gravship substructure acts as the floor of the gravship and anything placed on the substructure of a functioning gravship will be taken to space as well. However, gravships have limitations on the total number of tiles of substructure that can be placed, initially supporting only 500 tiles, all of which can only be placed within a set radius around the grav engine. Both of these limitations can be reduced with grav field extenders which increases the max amount of substructure tiles supported, and extends the radius of placeable substructure beyond the initial radius of the grav engine. Any attempt to build beyond the max supported limit of substructure will result in excess substructure, and anything placed upon them, to be left behind on launch, these tiles will be highlighted in red to indicate that they are not supported, this is also true for substructure that are not connected to the grav engine.

Gravships are built around a grav engine and start with a limit of 500 tiles, and a 19 tile radius around the engine.

Both the number of tiles and the available area of a gravship may be increased by using extenders. Extenders must be placed within the radius of the grav engine to - up to a maximum of 6 extenders, each providing a radius of 17 tiles and increasing the number of tiles by +250, up to a maximum of 2000 tiles.

If a gravship leaves a tile with no grav anchor installed, then the map will be deleted, and cannot be returned to. Any pawns left behind will be lost. Wastepacks left on the map will be dumped.

Expeditions

Make sure to always bring enough resources. Especially important are chemfuel, food, medicine and components to fly, eat, heal and repair.

Raids

Landing the gravship at a site owned by another faction is always a raid against that site. Raiding with the grav ship allows most or all of the player's resources to be deployed to the raid and ready for use on arrival. However, there is a risk that all raiders will suffer grav nausea from a mishap.

Trade

Landing the gravship directly at a faction base is a hostile act, and landing nearby (within 4 map tiles) creates a colony, which may impose goodwill penalties^{[Needs Detail]}. Nevertheless, landing at the minimum permissible distance will ensure a reasonably short caravan. Using the gravship it is possible to reach previously distant faction bases for trade in a reasonable time frame, albeit less conveniently than by use of a passenger shuttle.

Additional modules and buildings

Pilot subpersona core: Increases piloting efficiency by 15 percent up to a maximum of 30.

Fuel optimizer: Increases fuel efficiency by 30 percent up to a maximum of 60.

Gravcore power cell: Passively generates electricity on the ship.

Signal jammer: Allows the gravship to land on heavily-defended orbital locations.

Gravship shield generator: Generates a shield with a radius that blocks incoming ground level and overhead projectiles.

Oxygen pump: Generates breathable air in enclosed areas on the ship.

Vac barrier: Does not block entry, but prevents transfer of breathable and reduces transfer of temperature.

Heaters: Generates heat, which is important when traveling to orbit.

Take off

Gravship range

Grav Ship travel distance is based on the amount of Thrusters, assuming there is sufficient fuel loaded into Small or Large Chemfuel tanks.

Structure	Maximum structures	Range per structure	Maximum range
Small thrusters	4	10	40
Large thrusters	6	16	96
Total			136

Launch ritual quality

The chance for a minor crash landing and the cooldown to launch a Gravship again is entirely based on the Launch Ritual quality.

Source		% per	Maximum	Maximum quality gain
Crew count		2%	5*	10%
Small thrusters		1%	4	4%
Large thrusters		3%	6	18%
Pilot subpersona core		15%	2	30%
Pilot's piloting ability	10%	0%	1	0%
	100%	20%	1	20%
	250%	30%	1	30%
Co-pilot's piloting ability	10%	0%	1	0%
	100%	10%	1	10%
	250%	15%	1	15%

*You may have additional crew on-board, but they will not contribute to the Launch Ritual quality

Launch quality is capped at 100%

Launch Cooldown is based on Ritual Quality:

Chance of Gravship landing mishap is based on ritual quality:

Gravship Landing Mishaps

Incident name	Description	Result
Minor Gravship Crash	While landing <Gravship Name>, <pilot> accidentally disengaged the grav engine too early, causing the gravship to free-fall for several feet. Some buildings on the gravship have sustained light damage from the crash.	Some buildings on the ship will have taken damage and will need to be repaired.
Thruster Breakdown	While landing <Gravship Name>, <pilot> overheated the ship's thrusters, frying valuable components. The thrusters will need to be repaired before they can be used again.	Thrusters will be broken down and will need components to be fixed.
Overheated Grav Engine	While landing <Gravship Name>, <pilot> over-engaged the grav engine, causing it to overheat. The grav engine will take longer than normal to cool down. In the meantime, the gravship can't be launched.	Grav engine cooldown will be extended longer than expected.
Grav Nausea	While landing <Gravship Name>, <pilot> was forced to do an emergency maneuver, resulting in an intense and prolonged deceleration. The experience has left your colonists feeling extremely nauseous. The effects will quickly fade.	Colonists on the ship will suffer from grav nausea for 2-5 hours.

All incidents are equally likely.

Version history

• Odyssey DLC Release - Added.
• 1.6.4535 - Fix: Gases on gravship never dissipate after landing.
• 1.6.4566 - Gravships no longer clear pollution when landing.

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Architect

Odyssey

Chemfuel tank (Small, Large) • Grav anchor • Grav field extender • Gravship hull • Gravship substructure • Orbital scanner • Oxygen pump • Passenger shuttle • Pilot console • Signal jammer • Thruster (Small, Large) • Vac barrier

Related

Gravship • Grav engine • Gravcore power cell • Fuel optimizer • Gravship shield generator • Pilot subpersona core