A person who lives on their boat is often referred to as a "liveaboard." This term typically describes individuals who reside full-time on a boat, whether for lifestyle reasons or as a means of housing. Liveaboards may be found in marinas, harbors, or anchored in various locations.
friend
friend
Friend
We can call them as Boat Builders.
Sailor or fisherman
A person from Venezuela is a Venezuelan.
Hermit!
a gypsy!
A "Duluthian"
A Russian
haligonian
Cantabrigian