Editing Trireme (section)

==Reconstruction==
{{main|Olympias (trireme)}}
[[File:"Olympias", Nachbau einer Triere im Schiffsmuseum Trokadero Marina, Paleo Faliro, Athen.jpg|thumb|''[[Olympias (trireme)|Olympias]]'', a reconstruction of an ancient Athenian trireme]]
[[File:Olympias.1.JPG|thumb|''[[Olympias (trireme)|Olympias]]'', a reconstruction of an ancient Athenian trireme]]
In 1985–1987 a shipbuilder in [[Piraeus]], financed by [[Frank Welsh (writer)|Frank Welsh]] (an author, Suffolk banker, writer and trireme enthusiast), advised by historian [[John Sinclair Morrison|J. S. Morrison]] and naval architect [[John Francis Coates|John F. Coates]] (who with Welsh founded the Trireme Trust that initiated and managed the project), and informed by evidence from underwater archaeology, built an Athenian-style trireme, ''[[Olympias (trireme)|Olympias]]''.

Crewed by 170 volunteer oarsmen, ''Olympias'' in 1988 achieved {{convert|9|knots|km/h mph}}. These results, achieved with inexperienced crew, suggest that the ancient writers were not exaggerating about straight-line performance.  In addition, ''Olympias'' was able to execute a 180 degree turn in one minute and in an arc no wider than two and one half (2.5) ship-lengths. <!-- see discussion page for issues about manoeuvrability --> Additional sea trials took place in 1987, 1990, 1992 and 1994. In 2004 ''Olympias'' was used ceremonially to transport the [[Olympic Flame]] from the port of Keratsini to the main port of Piraeus as the [[2004 Olympic Torch Relay]] entered its final stages in the run-up to the [[2004 Summer Olympics opening ceremony]].

The builders of the reconstruction project concluded that it effectively proved what had previously been in doubt, i.e., that Athenian triremes were arranged with the crew positioned in a staggered arrangement on three levels with one person per oar. This architecture would have made optimum use of the available internal dimensions. However, since modern humans are on average approximately 6&nbsp;cm (2&nbsp;inches) taller than Ancient Greeks (and the same relative dimensions can be presumed for oarsmen and other athletes), the construction of a craft which followed the precise dimensions of the ancient vessel led to cramped rowing conditions and consequent restrictions on the modern crew's ability to propel the vessel with full efficiency, which perhaps explains why the ancient speed records stand unbroken.