From the 4th century BC on, new types of oared warships appeared in the Mediterranean Sea, superseding the trireme and transforming naval warfare. Ships became increasingly large and heavy, including
The famous 2nd century BC Nike of Samothrace, standing atop the prow of an oared warship, most probably a trihemiolia.
The Lenormant Relief, from the Athenian Acropolis, depicting the rowers of an "aphract" Athenian trireme, c. 410 BC. Found in 1852, it is one of the main pictorial testaments to the layout of the trireme.
1:10 scale model reconstruction of a quadrireme based on a graffito from Alba Fucens in Italy, mid-1st century AD, Museum für Antike Schiffahrt, Mainz
The Isola Tiberina prow in Rome. according to Coates, it depicts a Greek-type "five" or "six", while according to Murray, it is a "five".
Tessarakonteres, or simply "forty", was a very large catamaran galley reportedly built in the Hellenistic period by Ptolemy IV Philopator of Egypt. It was described by a number of ancient sources, inc
Hellenistic-era warships
…quinquereme five, etc. However, the eventual appearance of bigger polyremes ("sixes" and later "sevens", "eights", "nines", "tens", and even a massive "forty"), made this theory implausible. Consequently, during the Renaissance and until the 19th century, it came to be believed that the rowing system of the…
The tessarakonteres, 1858 illustration
Ptolemy IV, who ordered the ship built
Speculative illustration of the Tessarakonteres with catamaran hulls, as Casson suggests