What to do to avoid crashing into another boat?

To avoid crashing into another boat, always maintain a proper lookout and be aware of your surroundings. Follow navigational rules, such as the "rules of the road," which dictate right of way in various situations. Use navigational aids like radar and GPS to monitor nearby vessels, and communicate with others using sound signals or radio when necessary. Additionally, adjust your speed and course to avoid collisions, especially in crowded or narrow waterways.