What is a key requirement for Hurricane Level 3 preparations?

A key requirement for Hurricane Level 3 preparations is to complete propulsion checks. This phase is critical because ensuring that the propulsion systems are operational is essential for maneuverability in preparation for severe weather conditions. Being able to maintain control of the vessel during a hurricane is paramount for safety, both for the crew and the vessel itself. The propulsion checks confirm that all systems are functioning properly, which allows for effective response measures if the situation escalates.

The other choices, while related to overall hurricane readiness, do not carry the same weight as propulsion checks in terms of the immediate operational readiness of the vessel. Evaluating and ensuring propulsion capabilities prepares the crew for potential evacuations or maneuvers to safety, which can be vital during an imminent hurricane threat.