Question

after the oil spill, ships needed to have double dropdown in case of emergency.

cargo
fuel tanks
hulls
rescue boats

Explanation:

Analyze the historical context of oil spills

Major oil spills, such as the 1989 Exxon Valdez disaster, led to significant environmental legislation.

Identify the safety design requirement

To prevent future leaks, regulations like the US Oil Pollution Act of 1990 mandated that oil tankers operating in US waters must be equipped with double hulls.

Match with the correct option

The double hull design provides an inner and outer barrier to contain cargo in case of damage to the outer shell.

Answer:

After the oil spill, ships needed to have double cargo fuel tanks hulls (Correct answer) rescue boats in case of emergency.