Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to the U.S. Navy Operations of Surveillance Towed Array Sensor System Low Frequency Active Sonar

NMFS, upon application from the U.S. Navy, is issuing regulations to govern the unintentional taking of marine mammals incidental to Navy operation of the Surveillance Towed Array Sensor System Low Frequency Active (SURTASS LFA) Sonar. Issuance of regulations, and Letters of Authorization issued under these regulations, is required by the Marine Mammal Protection Act (MMPA) when the Secretary of Commerce (Secretary), after notice and opportunity for comment, finds, as here, that such takes will have a negligible impact on the affected species or stocks of marine mammals and will not have an unmitigable adverse impact on their availability for taking for subsistence uses. These regulations set forth the permissible methods of take and other means of effecting the least practicable adverse impact on the affected species or stocks of marine mammals and their habitat.