Assisted navigation systems and methods

A system comprising:

• a user interface device providing a display, wherein the user interface device is associated with a mobile structure;
• and
• a logic device configured to communicate with the user interface device and a plurality of sensors associated with the mobile structure, wherein the logic device is configured to:
• receive data from the sensors,
• determine a plurality of navigational hazards disposed within a monitored area associated with the mobile structure,
• process the data and/or the navigational hazards to determine, for each point of a plurality of points in the monitored area:
• a distance from the point to each of one or more navigational constraints for the mobile structure;
• and
• the smallest distance of the distances from the point to the one or more constraints, the smallest distance being encoded into an operational context of the mobile structure,
• generate a context-dependent navigational chart for the mobile structure, wherein the navigational chart comprises greater or fewer of the navigational hazards in response to the determined smallest distances,
• update the navigational chart in response to changes in the data, and
• cause a navigation control system to steer the mobile structure in accordance with the updated navigational chart.