Who has the authority to relieve a COXN while underway?

The authority to relieve a commanding officer (COXN) while underway is given to the CO/OIC (Officer in Charge), the XO (Executive Officer) or XPO (Executive Petty Officer), or any senior officer present. This provision exists because effective command at sea is crucial for the safety and operational integrity of the vessel and its crew.

In situations that require a change in leadership due to incapacitation, misconduct, or an inability to perform assigned duties, it is essential that there are clear and established protocols. The presence of senior officers with the authority to step in helps ensure that command continuity is maintained, which is vital during operations that may involve complex decision-making or emergencies.

The distinction of allowing senior officers rather than just limiting the authority to the CO or XO ensures a flexible chain of command that can adapt to circumstances without waiting for a possibly delayed response. This flexibility is fundamental in maintaining order and ensuring that decisions can be made swiftly to address any immediate issues that may arise while the vessel is underway.