Verbal location: This should be the starting point for the section, for example:
America is located in the channel between Thompson Island and the main island, locally known as North Gap, out of Washington Harbor at the western end of Isle Royale.
Chart description: Bearings must be accurate. The chart magnetic variation should be indicated and bearings referenced as true or magnetic. This information should be computed from current nautical charts and be complete enough to allow accurate field location, for example:
The vessel is 0.7 statute miles from the northeast tip of Grace Island on a true bearing of 331.5 degrees and 20 degrees true from the porthand can buoy (C5) between Barnum and Booth Islands. The vessel is marked by a privately maintained porthand navigation buoy in North Gap channel. America can be located in the channel by rounding the tip of Thompson Island, entering Washington Harbor, using the white beacon on Thompson as a point of reference on a true bearing of 119 degrees and traveling a distance of 0.2 statute miles.
UTM coordinates should enclose all sites following standard National Register guidelines outlined in Bulletins 12 and 16. If UTMs are not available, longitude and latitude or Loran C coordinates are acceptable.
Area Definition: This describes the site and shape of the nominated area. When combined wth the general verbal description, chart description, latitude/longitude, Loran C, or UTMs, this should provide an accurate location of the vessel and the area to be included in the nomination, for example:
The area included in the site is a square 2,000 feet on a side; the geographical center is the charted vessel position; UTMs, latitude/longitude, or Loran C coordinates.
A detailed boundary justification is a required part of the geographical documentation for the National Register. General guidelines for boundary delineation of archeological resources are provided in Bulletin 12 from the National Register. The approaches advocated by the National Register in that bulletin should be fully applied.
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