#dead_reckoning  navigation without the aid of celestial observations
  supertype:  pilotage__navigation__piloting  the guidance of ships or airplanes from place to place
     supertype:  steering.control__guidance__direction  the act of setting and holding a course; "a new council was installed under the direction of the king"
        supertype:  control  the activity of managing or exerting control over something; "the control of the mob by the police was admirable"
           supertype:  activity  any specific activity or pursuit; "they avoided all recreational activity"
              supertype:  human_action__humanaction__act__human_activity__humanactivity  something that people do or cause to happen
                 supertype:  process__proces  situation commonly considered as making a change during some period of time
                    supertype:  situation  something that "occurs" in a real/imaginary region of time and space
                       supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                    supertype:  process_or_process_description
                       supertype:  processing_thing
                          supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                             supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                 supertype:  process__proces__physicalsituation  intuitively, the class of things that happen and have temporal parts or stages; examples include extended events like a football match or a race, actions like pursuing and reading, and biological processes; sumo#process is not identical to pm#situation because an instance of pm#situation is not necessarily an instance of sumo#physical
                    supertype:  situation  something that "occurs" in a real/imaginary region of time and space
                    supertype:  process_or_process_description
                    supertype:  physical__physical_thing  an entity that has a location in space-time; locations are themselves understood to have a location in space-time; click here for more details on the identical category sowa#physical_thing
                       supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

No statement uses or specializes dead_reckoning; click here to add one.