Bay Street Seaport is a fictional location featured in comic books published by DC Comics. It is associated with the Batman line of comics and first appeared in Detective Comics #934 in August, 2016.
The Bay Street Seaport was a warehouse facility located somewhere in Gotham City. The Penguin used it as one of many such locations for his weapons smuggling operations. A group of the Penguin's henchmen were anticipating the arrival of a shipment of weapons, but the deal was interrupted by the arrival of Stephanie Brown, aka Spoiler. The Penguin's goons had superior firepower, but fortunately for Spoiler, she had backup in the form of Red Robin.