Shaolin Sisters (1999)

Blurb:
Juline Kenga had always thought that she was an only child and heiress to her martial arts clan. So, it comes as quite a suprise when an old kung-fu master gives her a magical bell and tells her to find her 2 older sisters. She must find them quickly because the evil King Baiwon is trying to capture the 3 bells that the Kenga sisters hold. Finding her first sister is not so hard - Juline finds Kaline in a nearby town ... but the third - and oldest - sister is another matter entirely ... Seiline, a pirate captain(!), will not believe that the other two are her sisters unless they defeat her in combat ...

Source: www.anisearch.com/manga/334