Why must bilges be kept clean?

Bilges must be kept clean to prevent the accumulation of hazardous materials, such as oil, fuel, and other pollutants, which can pose significant environmental risks if discharged into water bodies. A clean bilge also promotes the safety and operational efficiency of the vessel, reducing the risk of fire hazards and ensuring proper drainage. Additionally, maintaining cleanliness helps in identifying leaks and mechanical issues early, ensuring better maintenance and longevity of the vessel. Regular cleaning is essential for compliance with environmental regulations and to protect marine ecosystems.