W911KB25R0018-0004 Attachment Example high res hydro.pdf

The image is a high-resolution hydrographic survey side scan of mooring components for Anchor #27 and Chain #27. The visualization depicts underwater mooring infrastructure with detailed 3D mapping, showing anchor chains extending from vertical structures to the seafloor. The image uses color gradients of blue, green, and yellow to illustrate depth and positioning of the mooring elements. A small inset map in the bottom right corner provides additional geographic context, showing the survey area in relation to a coastal landscape. The side scan sonar technique allows for precise underwater mapping and assessment of underwater infrastructure, which is likely critical for the proposed floating breakwater replacement project at Bar Point Harbor in Ketchikan, Alaska.