Conversation so far:
what was the name of gilligan's boat
The S. S. Minnow is a fictional charter boat on the hit 1960s television sitcom Gilligan's Island.
When was the show, Gilligan's Island first aired on television
Gilligan's Island premiered in the CBS network on September 26, 1964.
When was the series finale for Gilligan's Island aired
The Gilligan's Island series finale aired on April 17, 1967.

Question: How many seasons
Self-contained rewrite: How many seasons of Gilligan's Island are there