Limitations of iPhone maps

The iPhone resolutely refused to believe that I can walk on water. I was actually on a Thames Clipper en route from London Bridge to Embankment so in the middle of the river.

The normally accurate map claimed not to know my true location as indicated by the wide uncertainty radius of the blue halo. Instead it skulked along the riverbank tracking me as we sailed and refusing to get its feet wet.



Is this a bug or a feature?