Ahoy, buckos.
So we're muchachos on land and buckos on the sea?
Correct. The words convey the same meaning. As does the once oft-used term among sailors "bully."
Who woulda known that "Feeling Blue" has a nautical origin...
This term refers to a custom to mark when a ship had lost her captain at sea. The ship would have a blue band painted along her hull and would fly a blue flag when she returned to port. Now, the term refers to being sad or down.