USCGC Oak has an area of responsibility within the First Coast Guard District which covers the northeast United States, up to the Canadian border. While her primary mission is servicing aids-to-navigation (ATON), the ship can also support search & rescue, domestic icebreaking, living marine resources maritime law enforcement, environmental protection, national defense and homeland security missions.
The USCGC Oak operates within the First Coast Guard District's jurisdiction, covering the northeast United States up to the Canadian border. Its primary function is to maintain navigation aids, but it can also support search and rescue missions, icebreaking operations, maritime law enforcement, marine resource protection, national defense, and homeland security initiatives.