Operational fleet

Every active vehicle in the MSC programme across three contractors and nine eras.

Interplanetary

HESTIA - KerbalX / KeedMartin / KOEING joint build. First MSC interplanetary vehicle. Eight crew, classified propulsion, 58-day transit to Duna. Now in Duna orbit, orbital science phase under way. VESTA cargo companion docked. HESTIA tracker.

Primary crew - LAS-equipped

R-SLS5+ - KOEING. Latest crew vehicle. Flew HESTIA Crew Launch 1 (TENDING). 4-seat, lunar-plus rated extended range. Successor to R-SLS3+. Quietly built, appeared on a stand, rated.

KLS - KOEING with KeedMartin. Flagship crew vehicle. Custom crew-compartment LAS (rated on-pad, capable atmospheric, theoretical vacuum). Fuel transfer hoses, winch. Two crewed flights, two LSI dockings. Beautifully designed.

Orbital Transport System (OTS)

Confidence - KerbalX. OTS Hull 1. Flew OTS-2 through OTS-5 including HESTIA crew boarding (HEARTH) and second crew launch (MUSTER). 5-seat. Currently in maintenance after 4+ flights.

Heavy lift - testing

BelugaX - KerbalX. Heavy-lift vehicle. Three failures (HANDOFF: stage separation, CASCADE: engine cascade on reentry, AEGIS: heatshield decouple) before full success on flight 4 (METEOR, ocean recovery). Val's radio call named the patch.

Heritage vehicles

R-SLS2 / R-SLS2+ / R-SLS3+ - KOEING crew vehicle lineage. R-SLS2 flew MSC-002 and MSC-003. R-SLS2+ flew the RETRIEVAL rescue. R-SLS3+ volunteered for the ENCORE retrieval attempt. All retired or superseded.

SLS 2 / SLS 3C - KOEING. SLS 2 deployed KERBCOM and flew FSOM-stacked missions. SLS 3C was the KerbalOrbit winner (MSC-001). Workhorses of Eras 1-3.

Starship Heavy 3 / Starship Heavy 4 - KerbalX. SH-3 delivered SOLARCOM. SH-4 launched LSI 1 core. Both retired from active service.

L-SLS2+ / L-SLS3+ - Mun mission variants. L-SLS2+ flew MARE. L-SLS3+ flew TRANQUIL. Both retired, succeeded by LLS family.

LLS / LLSX - Lunar Landing System. Tri-party: KerbalX Stage 1 + KeedMartin/KOEING upper stage and lander. LLS flew MERIDIAN. LLSX upgraded.

KeedMartin systems - deep space

FSOM (Final Stage Orbital Maneuver Engine) - KeedMartin. Upper stage that attaches between payload and SLS2 third stage. 2 operational flights, 2 successes.

FARVIEW-1 - KeedMartin. First MSC deep-space probe. FSOM+SLS2 launch, Mun gravity assist, solar orbit on xenon ion engine. CLEARVIEW-1 camera system. Currently maneuvering to primary observation targets.

Contractor specifications and flight histories are published by KOEING and KerbalX.