If you stay at the Inn in Raftfleet directly after the "Intercepting Luger's Fleet" battle you will find yourself back before the battle again and you'll need to go through it again.
This is a good way to get some Flowing Pieces and Luck Rings as you can do it over and over again.
To continue the game simply leave Raftfleet without staying at the Inn after winning the battle.
This has been fixed for the PAL version.
Versions: NTSC UC