抄録
This offshore berth was constructed for Idemitsu Hokkaidou Refinery to receive crude oil from 300, 000DWT class tanker. It is one of the largest jacket-type offshore berth in the world with 10, 000t steel. The crude oil was unloaded from the first tanker in Aug. 73, only 10 months after the beginning of construction.
Its performance is sound through 24 years operation. On the basis of experiences of construction and operation, this paper presents the technical key suggestion that should be considered in planning, designing, operating and maintaining offshore berths and offshore facilities generally.