True or False: Lake Ontario has no significant shoals dangerous to navigation.

Lake Ontario does, in fact, have significant shoals that can pose dangers to navigation. These underwater hazards can create challenges for boaters, particularly in shallow areas where larger vessels might have difficulty maneuvering safely. Shoals can be particularly concerning during times of low water levels, as they may become more pronounced and less visible to navigators.

Understanding the geography and hydrology of Lake Ontario is crucial for safe navigation. While certain areas might have fewer hazards, the presence of shoals should be recognized as a potential risk across the lake. Therefore, being aware of navigation charts and local conditions is essential for safe boating practices in this waterbody. This is why the statement that Lake Ontario has no significant shoals dangerous to navigation is incorrect.