ONE PIECE Episode 185: The Two Awaken! On the Front Lines of the Burning Love Rescue!
Episode 185 of 1180 of ONE PIECE, aired March 14, 2004, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Usopp and Sanji split up to rescue Nami, but the first one to get on deck is Usopp.