NOAA announces change in channel depths on raster nautical chart products


#1

https://www.nauticalcharts.noaa.gov/updates/?p=171708

For those that like to use RNCs or compare the paper charts to the ENCs (which would be more accurate since they will have the “controlling depths” updated on their charts). Consistency is good, but be aware of potential shoaling in “project depth” areas if you aren’t using ENCs.


#2

Great, God. What are they thinking? There are many recreational mariners that only use the raster charts and have no idea how out of specification the controlling depth is from the project depth. Since ACE has been neglecting any dredging responsibilities where there isn’t a high commercial demand, many inshore channels have silted up to less than half the project depth. Near me there is one channel with a project depth of 24’ that has a controlling depth of only 4’. I can’t see any good coming from this jarhead decision.