The Gowanus Dredgers' Pirates of the Gowanus Halloween Parade on Saturday, October 31, at 5:30 PM, from the Gowanus Dredgers Canoe Club Boathouse at 165 2nd Street. It's one of three Halloween parades in Brooklyn Community Board 6 on Saturday, all on the map at bkcb6.app/spookycb6. Events can be delayed or cancelled, including for weather.