NASBLA Public Library

In support of the Gravina Access Project and together with a similar effort to identify aviation requirements, this updated reconnaissance of vessel navigation requirements supports the process of identifying practical alternatives for improving access between the City of Ketchikan and Gravina Island in southeast Alaska.

This report identifies the number and characteristics of vessels using Tongass Narrows and assesses effects of the proposed project alternatives on marine navigation. Included are projections of future cruise ship traffic in Tongass Narrows and an analysis of the navigation impacts of the proposed bridge alternatives—Alternatives C3(a), C4, C3(b), D1, F1, and F3—especially impacts on cruise ship schedules and costs.