There is no special term, it's just called a sailor's hat.
Crew
Sailors on any type of vessel are called a crew of sailors.
A collection of sailors is called a crew of sailors.
cap and gown. the hat is called a mortarboard.
a leperchaun's hat :P
The hat is also called a homburg hat in English.
Its called a hat box
According to Irish folklore, it's called a cocked hat.
A guardsman hat is called 'Bear Skin'
This is called mutiny and the sailors are mutineers.
Chart.
sailors