What does Plate #1 describe in terms of navigational aids?

The description of Plate #1 as referring to the lateral system when viewed from a specific perspective is crucial for understanding navigational aids. In navigation, particularly in the context of the lateral system, it indicates how mariners encounter these aids upon entering from the sea. The lateral system is designed to mark channels and provide guidance for safe navigation; therefore, understanding how this system is depicted when approaching from seaward is essential for safe maneuvering.

Knowing how navigational aids are presented in this context helps mariners recognize which side of the waterway they should favor during their approach. This understanding is vital in avoiding hazards and ensuring compliance with the established navigational markers. By viewing the lateral system from this perspective, mariners can better interpret the information these aids provide, leading to safer navigation practices and a clearer understanding of channel layouts.