The Origin of the ship's name has to with its registry - 1648.
In 1648 the Peace of Westphalia was signed and that defined what is known as modern Europe, the formation of nation states as current diplomatic system. I would recommend editing out that the ship was named after one of Jupiter's moons.
You say it with so much conviction, but with so little proof. If there is that much doubt, then all references should be removed. --Alan del Beccio (talk) 02:41, September 28, 2017 (UTC)
Since Starfleet ships ususually use the English names of geographical locales (USS Constantinople, USS Havana, Norway-Class), I'm pretty sure it references the moon or the mythical figure. Kennelly (talk) 05:36, September 28, 2017 (UTC)
If it was named USS Europe, I would agree, but it isn't. You might be right about the number, but with regards to the name we should go for the most obvious rationale(the moon). Wikipedia states that the moon was not named for Europe either. 31dot (talk) 09:18, September 28, 2017 (UTC)