I really like the colours and composition of #15. Would be interesting to see what it looked like if you changed the colour of the top wave to green, beige or yellow, in a way to represent the beach, shore or land. Norwegian shores are usually rocky and beige.
This center is owned by a group of churches. I spoke with one of the representatives yesterday, and he wondered if it was possible to make the logo suggest that this is a Christian camp, without making it difficult for people of other beliefs to rent the place.
So we don't want to use the cross or angels as part of the logo. However, the word "Oven" actually means "Above", so I am thinking maybe the logo should rather emphasize that - a connection to good things above, something that brings the thoughts to heaven, revelation, love from above - without getting too playful. ;)
Since you have some of the top entries, I would like to challenge you to see if you could come up with something along these lines.