Final answer:
Looking for the nearest fuel dock is not an example of maintaining proper lookout; this action is a navigational concern rather than a safety precaution.
Step-by-step explanation:
The question "What is not an example of maintaining proper lookout?" refers to practices that are necessary for safety, particularly in the context of boating or other water-related activities. Option A, looking for swimmers and obstructions, is indeed an example of maintaining proper lookout as it involves being vigilant for potential hazards that could cause harm or necessitate evasive action. On the other hand, Option B, looking for the location of the nearest fuel dock, is not an example of maintaining proper lookout because it is more of a navigational concern than a safety precaution regarding immediate surroundings. Maintaining proper lookout involves being aware of your surroundings to ensure safe navigation. While looking for swimmers and obstructions (option a) is an example of maintaining proper lookout, looking for the location of the nearest fuel dock (option b) is more related to navigation planning and fuel management rather than actively watching for potential hazards or obstacles in your immediate vicinity.