Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Early next year (564) the Roman fleet resumed its operations. Gaius Livius left the Rhodian fleet--which had appeared in good time this year, numbering 36 sail--to observe that of the enemy in the offing of Ephesus, and went with the greater portion of the Roman and Pergamene vessels to the Hellespont in accordance with his instructions, to pave the way for the passage of the land army by the capture of the fortresses there. Sestus was already occupied and Abydus reduced to extremities, when the news of the defeat of the Rhodian fleet recalled him.
The Rhodian admiral Pausistratus, lulled into security by the representations of his countryman that he wished to desert from Antiochus, had allowed himself to be surprised in the harbour of Samos; he himself fell, and all his vessels were destroyed except five Rhodian and two Coan ships; Samos, Phocaea, and Cyme on hearing the news went over to Seleucus, who held the chief command by land in those provinces for his father.
But when the Roman fleet arrived partly from Cane, partly from the Hellespont, and was after some time joined by twenty new ships of the Rhodians at Samos, Polyxenidas was once more compelled to shut himself up in the harbour of Ephesus. As he declined the offered naval battle, and as, owing to the small numbers of the Roman force, an attack by land was not to be thought of, nothing remained for the Roman fleet but to take up its position in like manner at Samos.
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Reference address : http://www.ellopos.net/elpenor/rome/3-09-war-antiochus-asia.asp?pg=26