Talk:H-II Transfer Vehicle

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I think that the assumption that the HTV is simpler than the Progress since it performs berthing rather than docking like the Progress is by itself a rather simplistic statement.

The berthing requires station keeping of the HTV in the vicinity of the ISS, which is a risky operation. Grappling of a 15-ton free flying object by the SSRMS is an operation, which has never been attempted before.

It is not comparable to grappling of a satellite by the Shuttle arm, because Shuttle offers direct visibility and more maneuverability than the ISS.

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