Question 181Navigation General

The correct answer is C) 1:100,000. Coastal charts used for navigation typically have a scale of 1:100,000. This scale provides the appropriate level of detail and coverage needed for coastal navigation. Larger scale charts, such as 1:25,000 or 1:35,000, are generally used for more detailed navigation in harbors and restricted waterways. Smaller scale charts, like 1:500,000, cover larger geographic areas but lack the detail needed for coastal navigation. The 1:100,000 scale is the standard for coastal charts to ensure mariners have the necessary information to safely navigate along the coastline.