|The description of the activity.
|The duration of the activity in hours.
|The geographical location of the vessel at the ending of the activity.
|The end date of the activity.
|A utility object to wrap additional activity attributes.
|The historical MMSI numbers of the vessel performing the activity.
|The activity Unique Windward assigned ID.
|Whether the activity is still in progress.
|The MongoDB of the port call following the activity occurrence.
|The attributes of the polygon in which the activity occurred.
|The MongoDB of the port call preceding the activity occurrence.
|The attributes of the second vessel involved in the activity.
|The geographical location of the vessel at the beginning of the activity.
|The starting date of the activity.
|The classification category of the activity.
|The attributes of the vessel performing the activity.
|The Unique Windward assigned ID of the vessel performing the activity.