BOTH INTERNATIONAL & INLAND Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should __________.

Correct Answer: Option C — answer with one prolonged blast

Under Inland Navigation Rules, for the condition where 'Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should', the correct requirement is: 'answer with one prolonged blast'. This standard ensures clear navigational intent and collision avoidance.