What is required when approaching a blind bend in a waterway?

When approaching a blind bend in a waterway, the appropriate action is for vessels to blast their horn. This practice serves as an effective means of signaling to other vessels that may be hidden from view due to the angle of the bend. The sound of the horn acts as a warning to alert anyone who might be approaching from the opposite direction, promoting safety and preventing collisions.

Using sound signals like honking the horn is a crucial part of navigational protocol, especially in areas where visibility is limited. It's important to understand that this approach is aligned with safe boating practices and helps to create a mutual awareness among mariners of each other's presence, thus reducing the risk of accidents in confined or hazardous waterways.

Slowing down, while often prudent in many situations, is not a universally mandated action in this context, nor is the displaying of flags or the absence of specific requirements intended to address the inherent risks of navigating blind corners effectively.