NOAA Alaska reporting areas
An sf object in EPSG:4326. Native fields include REP_AREA (reporting
code), SubArea (BS, AI, GOA, Arctic, or Donut), and OBJECTID. Added fields:
area_code, area_name, authority, area_type, source_url, retrieved_utc.
Code 550 is international water. Some reporting areas include state waters.
Source
NOAA Alaska Regional Office Base_Map service; see [get_sources()].