Yes, at Chersonensus in 48 BC Caesar won a sea battle when he went to collect the 37th Legion and stores, which had been blown off course. As he had not intended to do any fighting his squadron was manned only by sailors, but he went to the rescue of one of his Rhodian vessels when it was beset by the whole Alexandrian fleet, which had soldiers aboard, and scored a remarkable victory. There was a further victory a few days later, but though he was present, this was enabled on his behalf by the Rhodian fleet.

The occasion on which he was involved in a conclusive defeat at sea was earlier in the same year when, frustrated by Pompey's fleet, he took a small boat across the Adriatic from the coast of Epirus to find out what was happening with Mark Antony and the rest of his troops at Brundisium. In spite of his efforts at encouraging the crew, they had to turn back because of the weather.

What say we ask Quintus Julius Caesar to ask the next question?