What do diamond-shaped daymarks identified with 'N' provide?

Diamond-shaped daymarks identified with 'N' serve as a navigational feature that indicates that there is no lateral significance associated with them. This means that the daymark is not intended to indicate the presence of a channel or provide guidance in terms of navigation regarding where to proceed. Rather, they are often used in a regulatory context, implying that the mariner should not use this mark to determine their course or position relative to navigating safely through a waterway.

While other types of daymarks may indicate channel limits, hazards, or navigational aids, the 'N' daymark specifically communicates a different purpose. Thus, it reinforces the importance of understanding what different markers convey when navigating, ensuring that mariners interpret them correctly and adhere to safe navigation practices.