Is the ferry fare of 9000yen for one or two persons?

Question:

I'm looking at Kampuferry, the ferry between South Korea and Japan. Please, if you know Japanese, can you tell me whether the 9000yen is per adult or per room?? I read the translated version but I just don't get it.

http://www.kampuferry.co.jp/unchin.htm

Answer:

I think 9,000 yen is the fee for one adult, one-way.
it can't be room charge because 9,000 yen is rank of 2nd class.
2nd class guests look like to sleep together in a huddle. Room charge is available at 1st class and upwards.