θαλασσοκρατέω
From LSJ
Ὁ δὲ μὴ δυνάμενος κοινωνεῖν ἢ μηδὲν δεόμενος δι' αὐτάρκειαν οὐθὲν μέρος πόλεως, ὥστε ἢ θηρίον ἢ θεός → Whoever is incapable of associating, or has no need to because of self-sufficiency, is no part of a state; so he is either a beast or a god
English (LSJ)
A to be master of the sea, Hdt.3.122, Th.7.48, Plb.1.7.6, Phylarch.1 J.:—Pass., to be beaten at sea, Demetr.Com. Vet.2.
German (Pape)
[Seite 1183] das Meer beherrschen, die Oberherrschaft zur See haben; Her. 3, 122; Thuc. 7, 48; Pol. 1, 7, 6; Lucill. 112 (XI, 247). – Pass., com. bei E. M. 335, 18.