Which document provides the International Code of Signals?

The International Code of Signals is a standardized communication system used to convey navigational messages and safety information between ships. This code is detailed in a specific publication by the National Oceanic and Atmospheric Administration (NOAA), which is commonly referred to as Pub 102. This document outlines the signals, their meanings, and how to use them effectively in maritime communication. Pub 102 not only contains the codes but also provides guidance on the application of these signals in various situations, making it an essential resource for sailors and maritime professionals.

In contrast, Sailing Directions generally offer navigational guidance such as waypoints, depths, and hazards. The Nautical Almanac provides astronomical data, such as celestial position information that is used for navigation but does not include the International Code of Signals. Radio Navigation Aids refer to electronic systems that assist in navigation, rather than written or visual signals. Therefore, Pub 102 is the definitive source for the International Code of Signals, making it the correct choice in this context.