τριακόντορος
From LSJ
ῥεῖα δ' ἀρίζηλον μινύθει καὶ ἄδηλον ἀέξει, ῥεῖα δέ τ' ἰθύνει σκολιὸν καὶ ἀγήνορα κάρφει → easily he humbles the proud and raises the obscure, and easily he straightens the crooked and blasts the proud (Hesiod, Works and Days 6-8)
English (LSJ)
(sc. ναῦς), ἡ,
A thirty-oared ship, Th.4.9, X.An.5.1.16, etc.; so written in IG22.1629.121,335 (iv B. C.); but τριακόντερος ib.12.23.4 (restd.), 22.1649.6 (iv B. C.), τριη- Hdt.4.148, 7.97: cf. πεντηκόντορος.