A few more relevant points are interesting. The trireme was said to be capable of 8 knots, which is good compared to sailing ships of the time. Pliny cites some Roman sailing records the fastest of which is a run from Ostia to Africa of 270 nautical miles at an average speed of 6 knots. How long the rowers could maintain their speed is unknown. One would imagine exhaustion setting in after 10-20 minutes, but we don’t know whether all rowers were pulling in order to make an 8 knot speed.
And one more thing. Rowers were not slaves as portrayed in popular culture – at least the Greek oarsmen weren’t. There are pay slips extant showing that the thalamite rowers were paid less because their oars were shorter.