The N-II or N-2 was a derivative of the American Delta rocket produced under licence in Japan. It used a Thor-ELT first stage a Delta-F second stage nine Castor SRMs and on most flights either a Star-37E or Burner-2 upper stage identical to the US Delta 0100 series configurations. Eight were launched between 1981 and 1987 before it was replaced by the H-I which featured Japanese-produced upper stages. All eight launches were successful.
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