Albert Barnes on Acts 28:13

We fetched a compass. We coasted about; or we coasted along the eastern side of Sicily. The course can be seen on the Map.

And came to Rhegium. This was a city of Italy, in the kingdom of Naples, on the coast near the south-west extremity of Italy. It was nearly opposite to Messina, in Sicily. It is now called Reggio. See the Map.

The south wind. A wind favourable for their voyage.

To Puteoli. The wells. It was celebrated for its warm baths; and from these, and its springs, it is supposed to have derived its name of the wells. It is now called Pozzuoli, and is in the campania of Naples, on the northern side of the bay, and about eight miles north-west from Naples. The town contains at present about 10,000 inhabitants.