What are the risks associated with improper fueling practices?

Improper fueling practices pose significant risks, primarily resulting in fire, explosion, and environmental contamination. When fuel is not handled correctly—such as overfilling tanks, failing to use proper equipment, or spilling fuel during the process—there is an increased likelihood of fuel igniting due to sparks or heat sources, leading to fires or explosions. Additionally, spills can contaminate surrounding water bodies, affecting marine life and violating environmental regulations.

In contrast, the other options suggest benefits or outcomes that are not associated with improper fueling. Increased fuel efficiency, reduced maintenance costs, and enhanced vessel speed imply a positive impact that is contrary to the reality of improper fueling, which instead introduces hazards and potential financial and environmental liabilities. Understanding these risks is crucial for anyone operating a vessel to ensure safe practices are followed while fueling.