On the 66i with latest software version 5.50 the Man Overboard function is very hard to find. Older devices used to have MOB on the keypad area and it was very easy to access. However on my unit it was not in the Main Menu. So went looking:
Main Menu > Setup > Menus > Main Menu > page down to the bottom a page at a time by pressing the - button to get to "Add Page" > Applications > Man Overboard was in here.
I selected it and then selected Move. I then moved it up near the top of the list so it could be more easily found near the top of the Main Menu.
There needs to be a shortcut to this function. The MOB is not mentioned in the user manual of the 66i or the marine version 86i.
If anyone knows of a method to create a shortcut (like a long press of Mark) please let me know. Thank you, Tony