BOSTON — The Coast Guard is conducting a Waterways Analysis and Management System Study on the Shallow Draft System, which applies to waters less than 12 feet deep, to update its policies and make navigable waterways of the United States safer and more efficient. Waterway users, interested parties, and stakeholders are invited to provide comments or feedback via the tool posted at https://www.surveymonkey.com/r/ShallowWaterWAMS....