A ship in port is safe, but that's not what ships are built for.

A ship in harbor is safe—but that is not what ships were built for.

A ship in harbor is safe—but that is not what ships were built for.

More ships dock at the Port of Dubai than at any other port outside the U.S..

One can advise comfortably from a safe port.

Maybe you could build a hotel around it and it could be a ship in port.