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2012 Map of Hyannis OE S

Name: 2012 Topographic Map of Hyannis OE S
Creator: U.S. Geological Survey
Published: 2012
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2012

About this map

Hyannis Breakwater Light stands as a primary navigational aid in this coastal chart of the waters south of Yarmouth and Barnstable. The map illustrates the complex maritime geography of the Atlantic Ocean shoreline, where prominent landforms like Point Gammon and Great Island define the eastern approach. Along the western edge, the interface between the mainland and the sea is marked by Phinneys Bay, Osterville Point, and Crystal Lake.

The seafloor is heavily detailed with named hazards and landmarks essential for local pilots and sailors. Features such as Gannet Rocks, Collier Ledge, and the Bishop and Clerks reef system indicate the treacherous nature of these shoals. Modern transit patterns are represented by established maritime routes, specifically the Hyannis - Oak Bluffs Ferry Crossing and the Hyannis - Nantucket Ferry Crossing, which bisect the open water.