Some big ship of the ptolemaic? egypt

[Automatix]

Hi i would need help with to find some info about one really huge ship on ancient world, I have seen some pict many years ago and now i cant any info about that ship, I think that ship was a flagship of some ruler for ptolemaic dynasty but i am not sure.

Thanks for any info
Automatix

[bobbin]

http://en.wikipedia.org/wiki/Tessarakonteres

[Automatix]

thanks