Dehumidifier Possibility?

I found this dehumidifier for a boat at West Marine and was wondering if anyone has used it or has any advice toward or against trying it out. It's only $80 and only draws 90w vs. the 400w + my current dehumidifier uses.

http://www.westmarine.com/webapp/wcs/stores/servlet/Product_11151_10001_100586_-1?ci_src=14110944&ci_sku=100586&cid=sc_googlepla&device=c&network=g&matchtype=&gclid=CKyYm9CvwbYCFQ9eQgod8DEAnA#.UWYFjKU-NrU

Thanks All!

That is just a fan attached to a heater. It is not an actual dehumidifier.