Which vessel is not obligated to carry sound signalling appliances?

Vessels that are required to carry sound signaling appliances are generally those that are larger and engaged in commercial activities, where their operations involve navigating congested waterways or interacting with other craft. The COLREGs and various national regulations often specify these requirements based on size and type of vessel.

A vessel 8 meters in length is not obligated to carry sound signaling appliances under certain regulations, as vessels below a specified length, typically around 12 meters, may not be required to have these devices for safety purposes. This exemption recognizes that smaller vessels may not operate in the same high-traffic environments as larger commercial vessels and that their risk profile is different.

In contrast, fishing vessels, cargo vessels, and recreational sailing vessels may be subject to requirements based on their operational zones, the number of persons on board, and other safety considerations. These types of vessels typically need sound signaling appliances while navigating to ensure their presence is known to other mariners, as they may operate in busy areas or engage in activities that involve potential interaction with other vessels.