The 3000 warnings were from berth to berth, where the great majority was certainly on the destination side, in the pilotage area; some 20 miles In the shallow estuary and 13 miles up the tortuous Charente river to Rochefort.
…the 2/O was aware that the ‘check route’ function had checked the whole of the route from the berth at Teesport to the berth in Rochefort, and she assumed that the hazards were concentrated in the pilotage areas. The 2/O cleared the window showing the hazards…
This assumption could be seen as false by a second brain overlooking the route. Or:
… Although the 2/O was aware that the ‘check route’ function could be applied to individual legs of a voyage plan, she preferred to rely on visual checks alone.
With hindsight, nobody was harmed, it looks a bit comical:
For half an hour, the ship plowed through the sandbank with diminishing speed. At 0.3 knots the rudder could not turn the stranded ship any longer.
Since the autopilot is out of order, we try with manual steering…