Boat Registration Contact Information For Boat Registration and Unregistration Information in Kansas contact: KDWP Pratt Operation Office 512 SE 25th Ave. Pratt, KS 67124 Phone: (620) 672-5911 Fax: (620) 672-3013 Or use this Form to Email KDWP Your full name Phone number (in case email does not work) Email* Confirm Email* Subject* Message*