Why beam of oil tankers are large?

The beams of oil tankers are large to provide stability and minimize the risk of capsizing, especially when carrying heavy loads of crude oil. A wider beam increases the vessel's overall stability by lowering its center of gravity and enhancing its resistance to rolling in rough seas. Additionally, a larger beam allows for greater cargo capacity, enabling tankers to transport more oil efficiently, which is crucial for maximizing profitability in the shipping industry.