By FRNash/PHX, AZ (Frnash) on Saturday, January 28, 2012 - 06:11 pm:
Bob Jewell, Farmington Hills (Rjewell): 
 
"FRNASH 
2008 should be Mackinaw not Mackinac." 
 
Well except for ships, I do know that about the only thing that is Mackinaw is the City: Mackinaw City, (actually it is technically a village, not a city) all the rest are Mackinac! 
 
So as to ships, I had to do a bit of research: 
 
As for USCG Cutters, we may have a small dilemma: 
The picture was taken in 1958, so here is the dilemma: 
 
1. USCGC Mackinac (WAVP-371), in service from 1949 to 1967. 
 
2. USCGC Mackinaw (WAGB-83), an icebreaker in commission from 1944 to 2006. 
 
3. USCGC Mackinaw (WLBB-30), an icebreaker in commission since 2006. 
 
Depending on which (#1 or #2) is shown in the picture, either spelling could be right!