The H-II Transfer Vehicle is an orbital transfer vehicle designed to transport cargo to International Space Station (ISS) using the Japanese H-IIA rocket. The HTV will approach the Internatioal Space Station to be captured by the ISS manipulator arm to be berthed to a lock. The HTV is planned to be outfitted with two types of logistics carriers.

The HTV has 2 types of logistics carrier. One is a mixed (pressurized & unpressurized) carrier and the other is a pressurized carrier. The cutaway illustration shows the mixed carrier which can carry up to 8 ISPRs (International Standard Payload Racks) in pressurized section, and up to 3 EFPLs (Exposed Facility Payloads) on exposed pallet in the unpressurized section. The pressurized section has air conditioning ducts and lights to create the same environment for crew activities as other pressurized modules of Space Station. The unpressurized section of the HTV has an exposed pallet for cargo handling by the ISS manipulator arm.