Recent activities on the Dashboard answers one question: who has been in this yacht's records recently, and when.
What a row means
Each row reads User last activity: followed by the person's email address, with the date and time on the right. That timestamp is the last time that person opened this vessel in Nauticare — it is recorded whenever someone loads the yacht, and it is updated in place, so each person appears once with their most recent visit rather than once per visit.
The list is ordered with the most recent visit first, and it is specific to the vessel you are looking at: the same person may have a different timestamp on another yacht.
Who is included
The list covers the crew currently assigned to this vessel together with the users belonging to the managing company. Someone who has never opened this vessel has no row at all.
Seeing the whole list
The widget shows the five most recent entries. When there are more, a View the full list of activities button opens the Full list of activities panel with all of them. If nothing has been recorded yet, the panel shows No activities found. Close it with the Close button.
When the widget does not appear
The widget is hidden from crew members who have not been granted any permissions at all. Everyone else with access to the vessel sees it.