John Chrysostom

And how, say you, did they go without food, having taken nothing? How did they bear it? Their fear possessed them, and did not let them fall into a desire of food, being, as they were, at the point of extreme jeopardy; but they had no care for food. Moreover, the place is a trying one, for it was in the Adriatic, and then their long abstinence. They were in the midst of death. It was now the fourteenth day that they were going without food, having taken nothing.

Homily on Acts 53 ↗

Bede

And as the day was about to dawn, Paul urged everyone to take some food. In this passage, the most beautiful sense of allegory is laid open, as Paul urged those he promised would be saved from the wreck to take food. And because they were being guided by four anchors amid the force of the waves in the middle of the night, at daybreak, they made for the shore; for no one escapes the tempests of this age unless he is fed with the bread of life. …

Commentary on Acts ↗

Cassiodorus

"And when it began to be light, Paul besought," etc. After fourteen days of storm, Paul besought them to take food, since it was clear that, of two hundred seventy-six men, not even a hair of their heads had been lost. To encourage others by his own example, he broke bread and himself began to eat. When it was day, catching sight of a certain creek, they made towards the nearby shores. The ship, however, was broken up by reefs and waves, and the decision was that everyone should swim out. …

Complexiones on the Acts of the Apostles ↗