Queen Emeraldas is a four-episode Japanese anime OVA from 1998 that continues the Harlock Saga franchise created by Matsumoto Leiji. The anime was adapted from Matsumoto's 1978 manga of the same name.
It is the story of the space pirate spacecraft, Queen Emeraldas, which is captained by the mysterious and beautiful Emeraldas.
This tag implicates harlock_saga (learn more).