Considering the importance of Owada no tomari, Kiyomori built an artificial island in front of the port because, as mentioned before, traditionally the southeast wind and wave often destroyed the port facilities, and to build a safe dock, he began the reconstruction work by spending his own money.
大輪田泊の重要性を深くみとめた清盛は、上述したように、従来、南東風による風浪が港湾施設を破壊することが多かったため、湊の前面に人工島を築いて安全な碇泊地を設けようと、私費を投じて修築工事に着手した。