What is the Navy standard hose diameter?

The Navy standard hose diameter is 1.5 inches, which is commonly used for firefighting and damage control operations aboard naval vessels. This size strikes a balance between being large enough to deliver an adequate flow of water while remaining manageable for personnel to handle effectively in emergency situations.

The 1.5-inch diameter allows for efficient control of water pressure and volume, which is crucial during firefighting efforts. It ensures that crews can maneuver hoses quickly and effectively to suppress fires or manage flooding, particularly in confined spaces typical of ships. Other diameters, while they may serve specific purposes, do not align with the standard protocol set by the Navy for general firefighting use, making 1.5 inches the preferred choice for standard operations.