Periplus


A periplus, or periplous, is a manuscript document that lists the ports and coastal landmarks, in order and with approximate intervening distances, that the captain of a vessel could expect to find along a shore. In that sense, the periplus was a type of log, the nautical counterpart of the later Roman itinerarium of road stops. However, the Greek navigators added various notes, which, if they were professional geographers, as many were, became part of their own additions to Greek geography.
The form of the periplus is at least as old as the earliest Greek historian, the Ionian Hecataeus of Miletus. The works of Herodotus and Thucydides contain passages that appear to have been based on peripli.

Variant

A word equivalent in meaning to "periplus" is "periplum", defined in the Oxford English Dictionary as being "riginally and chiefly in the poetry of Ezra Pound" As a noun, Pound uses "periplum" simply to refer to a voyage or journey, as in canto 74, line 3: "The great periplum brings in the stars to our shore." Here the "great periplum" refers to the daily journey made by the Sun God, Helios. "Periplum" is also used in The Cantos adverbially, as seen in this example from canto 59:
Periplum, not as land looks on a map
But as sea bord seen by men sailing.
In his book ABC of Reading, Pound describes the geography of Homer's Odyssey as "correct geography; not as you would find it if you had a geography book and a map, but as it would be in 'periplum,' that is, as a coasting sailor would find it." Gabriel Levin: "One more night crossing, one more periplum..." Poet Denise Levertov compared Pound's use of the term to the slow panning of a movie camera or looking out a car or train window, while also noting that this would not fully give the reader a full sense of the term's literal meaning as the speed "does not allow for the kind of changes in the beholder that contribute to new perceptions".

Etymology

Periplus is the Latinization of the Greek word περίπλους, which is "a sailing-around". Both segments, peri- and -plous, were independently productive: the ancient Greek speaker understood the word in its literal sense; however, it developed a few specialized meanings, one of which became a standard term in the ancient navigation of Phoenicians, Greeks, and Romans.

Known ''peripli''

Several examples of peripli that are known to scholars:

Carthaginian

n sailors had long had their own sailing guide books, called Rahnāmag in Middle Persian.
They listed the ports and coastal landmarks and distances along the shores.
The lost but much-cited sailing directions go back at least to the 12th century. Some described the Indian Ocean as "a hard sea to get out of" and warned of the "circumambient sea," with all return impossible.

Tactic of naval combat

A periplus was also an ancient naval maneuver in which attacking triremes would outflank or encircle the defenders to attack them in the rear.