Ships by launch class/history

Below is a listing of the various crafts and their initial designation. Some designs have flown multiple times with slight variations in instrumentation, but most major revisions of launch vehicles are present.

On top are current series as well as future plans presented briefly, and below at the end is the main bulk of the retires series of rockets.

Proton Series

The Proton series of Kerbinian rockets is dedicated to our initial manned space program. The series is the main workhorse of lifting our kerbals and their equipment into orbit around Earth for their missions.

Aside from this main use, the modularity of the series has also extended its use to lifting probes for other planets into orbit, where the probes then use their own set of engines to intercept the planet they’re aiming for.

From left to right are the Proton-1, Proton-1a, Proton-2, Proton-2a, Proton-3 (updated), Proton-4, Proton-4a, Proton-5 and Proton-5a.
Craft First mission
Description Utility


Recovery-2C The Proton-1 is our first rocket designed to carry a kerbal into Low Earth Orbit. 3,5 T payload to LEO.


Earth MapSat-2 Proton-1a is the evolution of our smallest basic lifter for minor LEO payloads – it is also the first rocket only using Hydrolox fuel, minimizing the environmental impact of the space programme. 6 T payload to LEO.


KomSat-1 Proton-2 is an up-scaled  version of Proton-1, with added boosters, capable of delivering early LEO KomSat networks to a 3 Mm circular orbit. 14 T payload to LEO.


Intended as a step between Proton-2 and Proton-3, it ended up having the same capacity as a Proton-3, at a higher price. Planned: ~15 T payload to LEO.


Lunar Lander 1 Proton-3 is our early heavy lifter, capable of delivering an impressive 19 tonnes to orbit. 19 T payload to LEO


To be designed Planned: ~20 T payload to LEO.


Kerlab Transport 1 While numerically not the last, the Proton-4 was designed to have an intermediate step in between the Proton-3 and Proton-5 rockets. 30 T payload to LEO


KSS Hab Module 2 Continuing the trend of the A-series, the Proton-4a incorporates more efficient upper stages and is able to deliver nearly 40T to LEO, while eschewing the 3rd stage entirely. 38T payload to LEO.


Venus-3 The Proton-5 is the pinnacle of our traditional kerosene-fuelled rocket series, able to put just over 50 tonnes into low Earth orbit. 50 T payload to LEO


KSS-Core Expanding upon the Proton-5, the Proton-5a uses a more efficient second stage, eschewing the 3rd stage like the Proton-4a, while still allowing for delivery of a 30 % heavier payload. 65T+ payload to LEO.

Prototype Series

Series of unique rockets that are constructed for an absolutely singular goal. These rockets generally are absolutely cutting edge, but are also highly experimental – requiring extreme planning and care in their use. They are also all planned as simple one-off missions, with no regard to repeatability at all.

Craft First mission Description Utility
Bear-1 Bear-1 Highly experimental rocket, using the newest and most powerful engines. The only way to lift up our initial lander design. 130 T to LEO, or alternatively carrying the Bear-1 experimental Lunar Lander to orbit.
Gargantua Lunar South Pole Mission A new experimental lander design, allowing 3 kerbonouts to land on the Moon, stay there for a few days and return to Earth. ~150T to LEO, design yielded the Kosmos-2 series through later refinements.

Kosmos Series

The Kosmos series is the Kerbinian heavy lifters, capable of lifting most anything into orbit of Earth, as large as small stations. The largest of the series is also capable of lifting the Kerbinian prototype Venutian Discoverer vessel into orbit.

From left to right are the Proton-5a for comparison, a blank space for the future Kosmos-1, Kosmos-2 and Kosmos-3.

Kosmos-3 is also the first design to incorporate retro-boosters for all stages in the core design, negating the need to add retro-boosters to the orbital stage along with the payload.

Craft First mission Description Utility
Kosmos-1 To be determined Planned: 100+ T to LEO


KLS-Transport Heavy lifter designed to have a capacity at least twice that of the Proton-5a. Capable of lifting most Lunar return/landing missions to orbit. 150T payload to LEO.


Venutian Discoverer The biggest lifter in the heavy series, adding nearly 50 % to the capacity of the Kosmos-2. Capable of lifting our first interplanetary spaceship, the Venutian Discoverer, to LEO. ~220T payload to LEO max.

Energia Series

Future ultra heavy lifter series.

Craft First mission Description Utility
Energia-1 To be determined Planned: 300+ T to LEO
Energia-2 To be determined Planned: 400+ T to LEO
Energia-3 To be determined Planned: 500+ T to LEO

eXperimental Aircraft’s

The eXperimental Aircraft (XA) series is designed to improve Kerbinian understanding of the atmosphere and aerodynamics. This should lead to better recovery of spacecrafts and possibly more efficient means of launching in the future.

Mission Craft Description Utility
XA-1 Valentinas Spirit Design lost while moving offices, but who cares, since the dumb thing didn’t fly anyway? Flight
XA-2 Valentinas Spirit mk. 2 Second version. Swerving insanely on the runway, but piloting skills got it airborne, and a parachute down. Flight
XA-3 Valentinas Thunder To solve the steering issues on the ground for the first jet, the wheels were simply removed. Launched with rockets and landing by parachute seems to work though. Flight
XA-4 Valentinas Jet This first regular jet is mostly to prove that we can fly and land such a thing. It has extra sturdy landing legs, attached only to the fuselage. Flight
XA-5 Valentinas Looker This advanced jet has several hull mounted kameras, and is capable of continuous supersonic speeds at 12-15 km, along with a longer range than any previous jets. Reconnaissance flights
XA-6 Classified Classified Classified

Mission definitions:

XA: eXperimental Aircraft.

Retired series

SRP: Sounding Rocket Platform.

JBI: Jebedias Bad Idea (seriously, why are we even doing these missions?!?).

LRP: Lunar Reconnaissance Probe unmanned Lunar series.

RH: Red Herring reconnaissance series.

Jebediahs Bad Ideas

Mission Craft Description Utility
JBI-1 Jebedias Brain-something Val and Jeb decides that going to space can’t be as hard as Werner think, and clandestinely begins to build a rocket ship. Passing the Kerman Line
JBI-2 Jebedias Brain-something V2 Having been found out, and almost succeeded Bill and Bob joins Val and Jeb and perfect the design of the rocket ship, making it able to go to actual space.

Lunar Reconnaissance Probe Series

The Lunar Reconnaissance Probe (LRP) series is dedicated to furthering the Kerbinian knowledge of the Moon, as well as establishing a permanent Kerbinian presence both in orbit and on the surface of the Moon.

Mission Craft Description Utility
LRP-1 Lunar 1 Delivery of the first Lunar probe to orbit of the Moon. The probe is completely self-sustaining with solar panels and spare fuel for manoeuvres. It also carries numerous scientific instruments, as well as no less then 4 Kameras. Delivery of payload to Lunar orbit.
LRP-5 Venus 1 Modified LRP launcher, adding a slightly more massive probe, capable of performing a fly-by of Venus. 12 T payload to LEO.

Red Herring Series

The Red Herring (RH) series of rockets are designed to place Kerbinian probes in orbit around the Earth. These can vary from reconnaissance satellites to providing a launch platform for the global Kerbinian communications network.

The design was retired early (officially), due to the development of the superior Proton-series.

Mission Craft Description Utility
RH-1 Red Herring 1 The Red Herring 1 type was designed as the first orbital probe launcher, although the payload it can deliver is extremely limited. The plan was for the satellite to go “beep” when passing over the Illyriens, but the battery didn’t last long enough – it stayed in space though. LEO of minimal payload or < 3600 km
RH-3 Red Herring mk. 2 The Red Herring mk. 2 was designed as the first polar orbital probe with both scientific sensors as well as a camera – with a high enough battery capacity to continue functioning in orbit for an extended period of time, in order to properly document the Illyriens launch centre. Polar orbit for a classified amount of time.
RH-5 Recovery-1 The Recovery-1 was the first orbital probe designed to be able to survive re-entry. Orbit, re-entry and recovery.

Sounding Rocket series

Mission Craft Description Utility
SRP-1 Boomer 1 Boomer 1 is the first test rocket ever launched. The main thing learned from this launch, was that space is higher than 12 km. Atmospheric testing
SRP-2 Boomer 2 Boomer 2 was the first test rocket to reach actual space, carrying scientific instruments. 2-400 km
SRP-3 Boomer 3 Boomer 3 was an attempt to get scientific instruments as high as they could, though it was the first test rocket where the payload was not designed to be recovered.
SRP-7 Boomer 4 The Boomer 4 series is solely designed to achieve height. It has no scientific payload, and is simply designed to keep those pesky Illyriens in the dust!