I was part of the team that shipped the first ECDIS' to the the Navy over 20 years ago. Electronic Chart Display and Information System are the marine equivalent to aircraft automated flight navigation controls. ECDIS was in response to the Valdez finding a rock and folks asking why can ships' navigation systems do that planes can do? The charts are "smart" and will not let you plan a route over too shallow of an area. I know our product was on the Enterprise and Constellation 20 years ago. Why are they not on these smaller ships? FYI, back then the navigator on these nuclear aircraft carriers (yes there was a specific officer assigned to this) also had a sextant, watch, paper charts and compass, just in case.