Visa for 7 hour cruise ship visit Port of Xiamen

We are on a cruise through Asia in 2014 with our cruise ship visiting Xiamen for only 7 hours.

Do we need entry permit to disembark ship for short stop over sighting on the day ?

If we stay on the ship and don't step on the land, do we still need one ie being on a ship visiting a chinese port without getting off the boat. ?