| Title | Shape Coding for Daymarks |
|---|---|
| Record ID | 49969 |
| Personal Name Creator |
Hill, J. Harry; Abernethy, C. N. |
| Source | 42p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Corporate Contributor |
John A. Volpe National Transportation Systems Center (U.S.) |
| Publisher | United States. Coast Guard |
| Publication Date | 19740301 |
| Language | English |
| Abstract | Three experiments were conducted on form discrimination to select and evaluate forms for shape coding of daymarks. The discriminability of the forms was measured by the frequency with which each form was identified correctly and the frequency with which each form was confused with the other forms under evaluation. The form, in addition to the presently used can and nun, that was found sufficiently discriminable for use as a shape code for daymarks is the hourglass or a cylinder of equal aspect ratio. (Author) |
| Rosap ID | dot:11376 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/11376 |
| TRT Terms | Navigational aids; Geometry; Discrimination; Buoys |
| General Subjects | Daymarks; Coding |
| Classification | NTL - MARINE/WATERWAYS TRANSPORTATION - Marine Safety; NTL - MARINE/WATERWAYS TRANSPORTATION - U.S. Coast Guard |
| Geographical Coverage |
United States |
| Report Number | DOT-TSC-CG-72-04; CG-D-78-74 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/49000/49900/49969/DOT-TSC-CG-72-04.pdf |
| Format | |
| Database | NTL Digital Repository |