Is Hakodate a freeze-free port?

Hakodate is an ice-free port. According to relevant information, Hakodate, as the only ice-free port in Hokkaido throughout the year, is a famous tourist destination. The night view of Hakodate, one of the three most famous night views in the world, is a scenery not to be missed when traveling in Hokkaido. As night fell and the lanterns came on, we organized the crew to climb Mount Hakodate and enjoy the most beautiful night view in the world.