TIDAL CURRENTS
In Nantucket Sound the tidal currents are strong and their times and velocities vary considerably from place to place. Tidal current predictions are available on the internet from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS) at https://tidesandcurrents.noaa.gov/water_level_info.html and https://tidesandcurrents.noaa.gov/currents_info.html.