The analogy of a ship might not be totally appropriate, nor the point of no return. After all every ship must have a destination, and since the earth is not flat, it will eventually find a harbor. Perhaps a rocket would be more suitable.Teleportation even better, since Enoch was translated.
Abraham looked for a heavenly city.
I completely agree that analogies can be misused, abused, and misconstrued. They definitely have their limitations. I was thinking of the old days, when they were searching out new lands and new frontiers. Sometimes only those who are willing to go beyond the point of no return will find the promised land. We must surrender all to Jesus and leave the past far behind. Never turn back. Don't even look back.