Does every vessel need to signal intentions during fog according to the regulations?

Under the COLREGs (International Regulations for Preventing Collisions at Sea), vessels are required to signal their presence and intentions when navigating in conditions of reduced visibility, such as fog. This requirement is in place to enhance safety and avoid collisions in situations where visibility is compromised.

Every vessel, regardless of its type or mode of propulsion, has an obligation to sound appropriate navigation signals to communicate its intentions and position. This includes using fog signals, which are typically sound signals such as blasts of a whistle or horn, to indicate that they are underway or to signal their position to other vessels nearby.

The necessity for all vessels to signal during fog is crucial in ensuring that everyone on the water is aware of potential obstacles and movements, which is especially important when visibility is limited. It further promotes a collective understanding of each vessel's maneuvers, contributing to maritime safety.

While the other options may imply specific situations or vessel types that seem to require signaling, the general regulation emphasizes that all vessels must signal intentions in foggy conditions. This helps prevent misunderstandings and collisions, reinforcing the fundamental principle of safety in maritime navigation.