Logo feedback

So a friend of mine asked me to play around with some logo ideas for his middle school ministry, "submerge".  This is the first one that I've really settled on, but I wanted some feedback on what others thought.

 

In case it's not completely obvious, the art above the text is actually the letter "s" in a different font.  I liked the way the "s" looked, but not the font in itself.   Anyway, that's what I have for right now - so bring on the feedback. :)