The model is a 314S according to the CC brochures - there are a couple of them shown on the galleries page. Also, the brochure states that 312, 311, 313, and 314 all had lengths of 31' 6". So, last number was some sort of model number, same hull I believe.
The 314S is interesting - I would assume this is basically for the person that wanted a 312 with the lower? maintenance of the outboards and the added benefit of more room in the cockpit. I have an uncle-in-law who swears by outboards - easier to take off, replace, etc. But, I prefer the 312s because of the cleaner lines. There are examples in the galleries of people converting 312s to outboards as well.