The Jomon didn't (since they were there during the Iceage when it was just part of the continent). However, the Hakka (Ya Yoi) and Koreans definitely had to have boats.
I guess the sea-faring routes between Asia and Australia were responsible for the settling of Australia. You're probably right; the land bridge may not have existed.
However, I am still baffled about why a culture would voluntarily stop developing sea faring technologies that they used previously.