Which of the following tankers has a maximum capacity of 9,000 gallons?

The MC 306/DOT 406 tanker is specifically designed for transporting non-pressure hazardous liquids and has a maximum capacity of 9,000 gallons. This type of tanker is commonly used for cargo such as fuel oils, chemicals, and other liquids that do not require pressure to transport.

The design of the MC 306/DOT 406 ensures that it meets safety standards for the transportation of various liquid commodities while maintaining structural integrity and appropriate handling characteristics. The ability to carry this volume makes it a vital asset in both commercial transport and firefighting operations, particularly in scenarios where rapid refueling or liquid supply is necessary for firefighting efforts.

In contrast, the other tanker types listed – MC-312/DOT 412, MC-331, and MC-338 – are built for different purposes, such as transporting bulk chemicals under pressure or liquefied gases, and their capacities often differ from the non-pressurized design of the MC 306/DOT 406, which is tailored for a 9,000-gallon capacity.