What is the primary purpose of tugboats in cargo operations?

The primary purpose of tugboats in cargo operations is to assist vessel navigation. Tugboats are specialized vessels designed to maneuver larger ships in confined and congested locations such as ports, harbors, and narrow channels. Their powerful engines and agile design allow them to tow or push ships, helping them to dock, undock, and navigate through tricky waterways.

This role is crucial, especially when dealing with large cargo ships that may be difficult to handle on their own due to their size and momentum. Tugboats ensure safe and efficient navigation, minimizing the risk of accidents and making the entire cargo handling process smoother.

The other options, while they might be related to maritime operations, do not accurately capture the primary function of tugboats. For instance, carrying cargo is typically the responsibility of the cargo vessels themselves, not tugboats. Providing crew safety and extending vessel length do not align with the core operational purpose of tugboats, which is centered around navigation support.