Which action is crucial when navigating narrow passages?

Maintaining a slow and steady speed is crucial when navigating narrow passages because it enhances control of the vessel and ensures that the operator can react promptly to unexpected obstacles or changes in the environment. In tight spaces, there's often limited room to maneuver, and moving too quickly can lead to collisions with other vessels, floating debris, or the banks of the waterway itself. A slower speed allows for better observation of the surroundings and aids in making safer decisions, such as adjusting course or stopping if necessary. Furthermore, it reduces the wake created by the vessel, minimizing potential hazards to other watercraft and the environment, particularly in areas where the water is shallow or where wildlife may be present.

Other options, such as speeding through or making sharp turns, can lead to dangerous situations and instability, making slow and steady navigation the safest choice.