This week, NOAA’s Office of Coast Survey hosted its third annual workshop on nautical chart adequacy. Twelve students participated in the training and learned techniques to evaluate the suitability of nautical chart products using chart quality and publicly available information. This year’s workshop emphasized cartography and the ability to transfer NOAA procedures to the students’ charting products. The workshop provided a theoretical background on:
- Chart production at NOAA
- Review of NOAA charted symbols and abbreviations
- Review of automatic identification systems (AIS) and satellite-derived bathymetry (SDB)
- Overview of the chart adequacy procedure
Continue reading “NOAA hosts third annual workshop on nautical chart adequacy”
We are on the verge of acquiring a significant new source of data to improve NOAA nautical charts, thanks to an enthusiastic industry and mariners equipped with new technology.
By Lt. Adam Reed, Integrated Oceans and Coastal Mapping (IOCM) Assistant Coordinator
The United States has about 3,400,000 square nautical miles of water within our coastal and Great Lakes jurisdiction. Coast Survey, who is responsible for charting that vast area, averages about 3,000 square nautical miles of hydrographic surveying each year. The data collected by those surveys update over a thousand NOAA charts. However, hydrographic surveys are expensive and laborious, and so Coast Survey directs them toward the highest priority sites, which leaves many coastal areas without updates for many years.
Coast Survey may soon get new sources of information, provided voluntarily by mariners, which will alert cartographers to areas where shoaling and other changes to the seafloor have made the chart inaccurate.
Continue reading “Beta test of crowdsourced bathymetry holds promise for improving U.S. nautical charts”