to Java

Until we can get to the island of Java our only option from Kupang is the Pelni Shipping lines.
The details on the website are pretty sketchy and a little hard to use.
Another site, Pelni.com has the 2006 schedule although it is a little hard to decipher the routes.
Some other travellers have a better 2006 timetable.
I did manage to get a timetable eventually out of pelni.co.id, to official site.

Nama Kapal: KM.TATAMAILAU Via:
KUPANG - MAUMERE - BIMA - BENOA/DENPASAR
13:00 | 06:00 +3 Days (approx 1 per week)

It closely matches the 2006 timetable.

Economy is a little scary.