Survey. So the NOAA ship Fairweather surveyed the area where the Fennica went aground, and indeed we found several depths that were shoaler than what the chart showed. The soundings that the chart showed in that area were based on a 1935 lead line survey, visual control, so while the point soundings from the lead line may have been okay and certainly met the standards of the day, it's what was it between those lead line soundings. So that said, if you look at all of Alaska in particular and the vintage of the charts, the vintage of the hydrographic surveys that underlie the charts, it is a patchwork that represents 100 or 150 years of effort, and certainly the technology has changed. I most important for the program was our realization how much the usage of that area has changed, and it's understanding that change in usage that certainly needs to be driving our survey
Survey. So the NOAA ship Fairweather surveyed the area where the Fennica went aground, and indeed we found several depths that were shoaler than what the chart showed. The soundings that the chart showed in that area were based on a 1935 lead line survey, visual control, so while the point soundings from the lead line may have been okay and certainly met the standards of the day, it's what was it between those lead line soundings. So that said, if you look at all of Alaska in particular and the vintage of the charts, the vintage of the hydrographic surveys that underlie the charts, it is a patchwork that represents 100 or 150 years of effort, and certainly the technology has changed. I most important for the program was our realization how much the usage of that area has changed, and it's understanding that change in usage that certainly needs to be driving our survey
0917NOAA.HSRP.docx