Her head is resting on a catamaran boat hull- (one of the them) -a kind of sailboat, and in this case, a small one. That thing pointed towards the camera that gets blurry is the rudder, in the "up" position (because it's out of the water). It's a little boat- and you can see the little silver rudder-pin to hold the rudder down or lock it or remove it just behind her left shoulder there. It's up on tires so it doesn't scrape the paint/coating off on the rough surface there.
The model is pretty/sexy. Nice wardrobe too. I think this is mostly the pro photographer, basic setting and a girl who simply looks good/sexy in probably any light -nice skin tone and a pretty face. Hard to go wrong. She's a pro if those are all links to her work.
That is a hard object to recognize. I wouldn't have known had I not lived around boats all my life.
I usually don't comment because someone else has said it all. This is a very unique take though. The used tires with the brunette and the garter I suppose is what sets it off for me with her eyes looking through you. Got to love it! very well done and that is one HOT brunette! Thanks!