US Patent 12006014 Exhaust vent hoods for marine vessels and related methods

An embodiment of an exhaust collection system for collecting exhaust from a marine vessel includes an exhaust cleaning assembly including a tank. In addition, the exhaust collection system includes a vent hood in fluid communication with the tank of the exhaust cleaning assembly. The vent hood includes a frame including one or more extendable frame members, and an outer covering that covers the frame to define an enclosure with an opening configured to receive an exhaust stack of the marine vessel therethrough, the one or more extendable frame members to extend and retract to adjust a size of the opening.