BOTH INTERNATIONAL & INLAND An authorized light to assist in the identification of submarines operating on the surface is a(n) __________.

Correct Answer: Option C — intermittent flashing amber/yellow light

Under Inland Navigation Rules, for the condition where 'An authorized light to assist in the identification of submarines operating on the surface is a(n)', the correct requirement is: 'intermittent flashing amber/yellow light'. This standard ensures clear navigational intent and collision avoidance.