Paralus was the state trireme of Athens. See Xenophon's Hellenica, book II,
http://www.worldwideschool.org/library/books/lit/historical/Hellenica/chap9.html and
http://www.worldwideschool.org/library/books/lit/historical/Hellenica/chap10.html This article is a stub. You can help Wikipedia by fixing it.