Two examples of giant Hellenistic Galleys, the Leontophoros and the Isthmia, which belongs in the 3rd Century BC to the Thracian King Lisymachus.
Leontophoros, property of Lysimachus, King of Thrace, offered to Ptolemy II. It was probably the largest monorem (one level of rowers) ever built. Particularly narrow and despite having eight rowers per bench, which made it a “triple” octer at the time standard (100 oars), it had to be very fast, but was defeated by the Isthmia of Antigonos Gonatas.

The Isthmia, in the colors of Macedonia, of which she was the ambassador, was very different. More stout (20 m wide but only 70 m long), she was slightly slower although having still 2,300 rowers in two rows (rows of 64 oars), but much more manageable and stable, more powerful and devastating in ramming.