We're probably looking at a time when Greece was part of the Roman empire, depending on the date it was made and when it was on the ship. Evidently it was made earlier, but sank about 65 BC.
Rome was full of Greek teachers at that time, and Greek was the language of the eastern part of the Empire. Many Romans learned Greek, too. So, maybe it could be considered a combined product.
The Greeks were very mathematical and inventive, but the Romans tended to be good engineers. They were the ones who invented the arch and the waterwheel.
To be picky: the Romans were the first to widely implement the arch, not necessarily invent it.