Percent of U.S. EEZ surveyed to an appropriate level of certainty to support safe navigation per the Adequate Hydrographic Health Index (AHHI)2020-09-30T00:00:000.3660.3381.08284ExceededPercent of U.S. EEZ surveyed to an appropriate level of certainty to support safe navigation per the Adequate Hydrographic Health Index (AHHI)2021-09-30T00:00:000.3660.3381.08284ExceededPercent of U.S. EEZ surveyed to an appropriate level of certainty to support safe navigation per the Adequate Hydrographic Health Index (AHHI)2022-09-30T00:00:000.4040.3471.16427ExceededPercent of U.S. EEZ surveyed to an appropriate level of certainty to support safe navigation per the Adequate Hydrographic Health Index (AHHI)2023-09-30T00:00:000.460.3561.29ExceededPercent of U.S. EEZ surveyed to an appropriate level of certainty to support safe navigation per the Adequate Hydrographic Health Index (AHHI)2024-09-30T00:00:000.50Percent of U.S. EEZ surveyed to an appropriate level of certainty to support safe navigation per the Adequate Hydrographic Health Index (AHHI)2025-09-30T00:00:00