Go to the Homeland Security site and look thru the menu. There is a sticker/registration for vessels and aircraft. You can fill out the form on line and submit with a credit card. It usually takes me maybe two to three weeks to receive the sticker thru USPS. You can expedited for an additional charge. It is good for one year. I have been doing this for many years. and it has never been a problem. I cannot renew for 2016 yet but will be able to do so in another month or so. It really is a no brainer. You can purchase a sticker for 2015 now but they must be renewed again for January 1, 2016. Not a big deal and has served me very well over the years.