As of which date were all motorboats required to have specific safety features related to fuel?

The correct answer is April 25th, 1940, as this date marks when regulations were established requiring all motorboats to be equipped with specific safety features related to fuel. Generally, these regulations were enacted to enhance safety measures after recognizing the risks associated with fuel leaks, explosive fumes, and fire hazards in small boats.

By mandating safety features such as effective fuel systems and ventilation, authorities aimed to protect both operators and passengers from accidents. Understanding this historical context is essential since it reflects a significant turning point in maritime safety legislation, aimed at improving standards within the boating community.

The other dates listed do not correspond with the enactment of these crucial safety regulations for motorboats.