They update charts regularly so print outs can be outdated. Their website mentions the "new products" charting programs, instant updates, measuring, piloting, real time information, stuff that isn't paper. NOAA has to jump aboard that new ship if it wants to stay current. All commercial traffic is likely using digital now. Paper is back up.
"The world of navigation is benefiting from advances in technology, Smith explained. He said that NOAA will consult with chart users and private businesses about the future of U.S. navigation, especially exploring the use of NOAA charts as the basis for new products."