The Buoy Deck on the USCGC Mackinaw (WLBB-30). This deck holds sinkers, buoys, and other equipment needed to service buoys. The deck is capable of maintaining a load of 85 tons. The large yellow apparatus is the Inhaul Winch, unofficially referred to as the "Winch-A-Saurus". In the process of retrieving a buoy, the buoy is lifted aboard and secured to the buoy deck and then the inhaul winch is used to retrieve the buoy chain and the sinker (the heavy weight that holds the buoy in place). Seen during the Mackinaw's 2011 visit to the Lower Harbor in Marquette, Michigan.