Voyager Technologies

Bishop Airlock

Operational

The first and only permanent commercially owned module on the International Space Station, built by Nanoracks (now Voyager) with Thales Alenia Space and Boeing. The bell-shaped, ~4 m³ airlock - five times the capacity of the station's government airlock - deploys CubeSats and external payloads, hosts experiments and ejects trash, and has operated since its December 2020 arrival on SpaceX CRS-21.

Latest update Jul 12, 2026

Bishop Airlock

01

Current status

Installed on the ISS Tranquility module December 19, 2020; in commercial service for NASA and private payload customers

02

Specifications2

Internal volume

~4 m³, 5x the capacity of the ISS government airlock

In service since
December 2020 (launched on SpaceX CRS-21)

03

More from Voyager Technologies3

04

More in Space Stations