Radar overlay on an ECS, if not an actual ECDIS, should be required on all commercial vessels.
The Rosepoint Coastal Explorer ECS program only costs $350. The US charts can be downloaded and updated for free. It runs fine on a $1500 computer. There is no excuse, except totally incompetent management, for a commercial vessel not to have this. I’m not sure what the cheapest radar with ecs overlay capability costs, but it’s probably under $3000. Again, there is no good excuse for not equipping a commercial vessel with this.
The really excellent Furuno 8000 series radars with an ARPA card and ECS compatibility cost about $20,000. That’s not much money for a vessel with a $3000 a day crew cost and that burns $8000 in fuel a day. No excuse for not having a good radar.