I agree that there is a history of spiritualizing the scriptures resulting in error. But there are too many similarities to this account.

As I stated, there is not a verse that specifically says "The Ark is a type of Christ. But one word that has always stuck out for me was "pitch" which comes from teh root meaning forgiveness, pardon, atonement and is only used here.

Also the similarities of the Ark and Christ.

Pilgrim, believe me I have seen many gross exagerations of types in writings, but this is not one of them. Many learned men confess the same thing.

http://grace-for-today.com/1324.htm

Parks does a better job than i could

There never was a sinner half as big as Christ is as a Savior.