50HP Evinrude - Coils not grounded

[Tally Marx]

Stupid question I believe, but, do these ignition coils need to be grounded? I do not see any ground wires and when I look at replacement coils online they all have an earth wire.

 

[F_R]

???What am I looking at under the mounting bolts' heads?

 

[Tally Marx]

Should I just go down with the boat now or later?

 

[racerone]

Looks like there is a ground to me !!!