Bulk tankers are large - capacity vessels, either maritime ships or road/rail vehicles, designed for transporting liquid or gaseous cargoes in large volumes. Maritime bulk tankers, such as oil tankers and chemical tankers, are used for long - distance ocean transport, with capacities ranging from thousands to hundreds of thousands of tons. Road and rail bulk tankers are employed for overland transportation, carrying products like fuels, chemicals, and food - grade liquids. These tankers are constructed from durable materials, with specialized designs based on the cargo's properties. Safety features, such as double - hulls, leak - detection systems, and emergency shut - off valves, are integral to prevent spills and ensure the safe transit of bulk cargoes, making them essential for global supply chains in industries like energy, chemicals, and food.