Quintus Curtius Rufus, History of Alexander 9.4.11

9.4.11

In oculis omnium duo maiora navigia submersa sunt: leviora, cum et ipsa nequirent regi, in ripam tamen innoxia expulsa sunt. Ipse rex in rapidissimos vertices incidit, quibus intorta navis obliqua et gubernaculi inpatiens agebatur.

But the meeting of the rivers makes the waters swell in great billows like those of the ocean, and the navigable way is compressed into a narrow channel by extensive mud-banks kept continually shifting by the force of the confluent waters. When the waves, therefore, in thick succession dashed against the vessels, beating both on their prows and sides, the sailors were obliged to take in sail ; but partly from their own flurry, and partly from the force of the currents, they were unable to execute their orders in time, and before the eyes of all two of the large ships were engulphed in the stream. The smaller craft, however, though they also were unmanageable, were driven on shore without sustaining injury. The ship which had the king himself on board was caught in eddies of the greatest violence, and by their force was irresistibly driven athwart and whirled onward without answering the helm.