How does a storage roll differ from a salvage roll?

A storage roll is specifically designed for storing hose in a way that facilitates easy deployment while also protecting the hose when it is not in use. The defining characteristic of a storage roll is that it features male threads (or fittings) on the outside, which make it suitable for connecting to the fire hose apparatus when it is pulled out for use. This design allows the hose to be neatly coiled without being damaged.

In contrast, a salvage roll is utilized for transporting hose that might need to be deployed in various situations, and its design aligns more with practicality in moving or accessing hose quickly. It typically may have threads or fittings that are not specifically oriented to the outside the way a storage roll does.

Therefore, the correct answer highlights a fundamental structural and functional difference between the two types of rolls, emphasizing how the storage roll is configured to protect and facilitate the quick connection of hose for firefighting operations.