ased _on the number of rowers that sat on
one bench pulling each his separate oar, but through one_ portella _or
rowlock-port_.[2] And to the classes of galleys so distinguished the
Italians, of the later Middle Age at least, did certainly apply, rightly
or wrongly, the classical terms of _Bireme_, _Trireme_, and _Quinquereme_,
in the sense of galleys having two men and two oars to a bench, three men
and three oars to a bench, and five men and five oars to a bench.[3]

That this was the mediaeval arrangement is very certain from the details
afforded by Marino Sanudo the Elder, confirmed by later writers and by
works of art. Previous to 1290, Sanudo tells us, almost all the galleys
that went to the Levant had but two oars and men to a bench; but as it had
been found that three oars and men to a bench could be employed with great
advantage, after that date nearly all galleys adopted this arrangement,
which was called _ai Terzaruoli_.[4]

Moreover experiments made by the Venetians in 1316 had shown that four
rowers to a bench could be employed still more advantageously. And where
the galleys could be used on inland waters, and could be made more bulky,
Sanudo would even recommend five to a bench, or have gangs of rowers on
two decks with either three or four men to the bench on each deck.

[Sidenote: Change of System in the 16th century.]

26. This system of grouping the oars, and putting only one man to an oar,
continued down to the 16th century, during the first half of which came in
the more modern system of using great oars, equally spaced, and requiring
from four to seven men each to ply them, in the manner which endured till
late in the last century, when galleys became altogether obsolete. Captain
Pantero Pantera, the author of a work on Naval Tactics (1616), says he had
heard, from veterans who had commanded galleys equipped in the antiquated
fashion, that _three_ men to a bench, with separate oars, answered better
than three men to one great oar, but four men to one great oar (he says)
were certainly more efficient than four men with separate oars. The
new-fashioned great oars, he tells us, were styled _Remi di Scaloccio_, the
old grouped oars _Remi a Zenzile_,--terms the etymology of which I cannot
explain.[5]

It may be doubted whether the four-banked and five-banked galleys, of
which Marino Sanudo speaks, really then came into practical use. A great
five-banked galley on this system, built in 1529 in the Ven