The differences between the Panokseon and Japanese ships were significant. Japanese equivalents were the large Atakebune class and the medium Sekibune-class ships. In contrast to the Panokseon, the hulls of the Japanese vessels had sharp, V-shaped bows. A sharp underside was favorable for swift or long-distance travel in the open seas because of lower water resistance (thus these ships had faster cruising speeds). Since this variety of hull had a deep draft (penetrates deeper into the water), however, the ship’s turning radius was considerably large and changing direction was therefore a lengthy process. In addition, ships with larger drafts have a more difficult time of navigating narrow and shallower waters. Japanese ships were thus vastly less maneuverable than the panokseon in Korea's narrow channel waters.