I though this was just a issue of squat but there was also a question about the soundings. Some similarities to the Fenica, pilot onboard.Grounding of the Queen Elizabeth 2
Ripped open the bottom, something like 14 million dollars of damage.
Even with today’s full bottom-coverage sonars, can hydrographers guarantee that their surveys represent the bottom with absolute accuracy? Should mariners have unconditional confidence in the information conveyed on any nautical chart? Most mariners understand that nautical charts may not be 100% accurate – thus the term ‘prudent mariner’ comes into play. Generally, the deficiencies that mariners become aware of are the ones they can see, for example, a buoy being off station or a landmark that has been removed. It is rare that a mariner will find a depth discrepancy by grounding. There is a simple explanation for this: a prudent mariner will factor in a safety margin when using nautical charts. Prudent mariners have the wisdom to know that charted depths might not be 100% representative of the true bottom.