What factor must be taken into account when determining safe speed?

• A. The length of the voyage
• B. The weather
• C. The age of the crew
• D. The maneuverability of the vessel

Answer: (D)

Safe speed is the speed at which a vessel can take proper and effective action to avoid collision and be stopped within the distance appropriate to the prevailing circumstances. The most important factor among those listed is the vessel’s maneuverability—the ability of the vessel to change course, slow down, or stop quickly and predictably given her hull form, rudder response, propulsion, and current conditions. If a vessel isn’t capable of maneuvering quickly enough, you won’t have the time or space to avoid a hazard, even if other conditions look favorable. Weather and traffic conditions also influence safe speed, but the vessel’s own maneuverability sets the practical limit for how fast you can safely proceed. The length of the voyage or the crew’s age don’t determine the immediate ability to avoid collision.