U.S. Navy Releases Command Investigation into USS Connecticut Grounding 

PEARL HARBOR — The U.S. Navy has released the command investigation into the USS Connecticut (SSN 22) grounding that occurred Oct. 2, 2021, the U.S. Pacific Fleet said May 23.

USS Connecticut grounded on an uncharted seamount while operating submerged in a poorly surveyed area in international waters in the Indo-Pacific region. The investigation determined the grounding was preventable. Specifically, the grounding resulted from an accumulation of unit-level errors and omissions in navigation planning, watch team execution and risk management, all of which were deemed to fall far below U.S. Navy standards. 

The investigation and endorsements describe what happened, promulgate lessons learned, memorialize completed corrective actions, document accountability actions and delineate pending actions that must be finalized with a sense of urgency.

In addition to addressing the unit-level errors that caused the grounding, the investigation highlighted specific areas for improvement in the deployment training and certification process, and the Navy is urgently implementing these improvements across the Submarine Force. This investigation delineates 28 corrective actions, of which 14 actions are complete, 13 actions are in progress, and one is enduring. 

In implementing these significant improvements, the Navy said it will become a more effective fighting force.