USCGC Sycamore (WLB-209) is a United States Coast Guard seagoing buoy tender, the second of her name and the ninth of the Juniper-class. She is now home-ported in Newport, Rhode Island, following a one year long Midlife Maintenance Availability (MMA) in Baltimore, Maryland. She was originally home-ported in Cordova, Alaska. Sycamore primarily tends to aids-to-navigation (ATON) in Martha's Vineyard, the Long Island Sound, Hudson River, and New York City Harbor and entrances; however, she is also responsible for maintenance support of National Data Buoy Center's offshore weather buoys. In addition to her primary ATON role, Sycamore also performs other duties, such as, marine environmental protection, maritime law enforcement, domestic icebreaking, search and rescue, and homeland security missions.