Yes, I am using it and XHP221 in my Landcruisers. It has a marine grease pedigree, so will serve you well in your boat application. Not being marketed as such, but it is an extended service life grease. XHP Special has 0.75% Moly - more than enough for automotive needs.
This is not the only grease I like, there are many excellent grease products..
Belgian Chevron which is marketed as Texaco in Europe is also an excellent grease and on various MB-Approval grease lists