What rudder command is typically used for turns greater than 30 degrees?

When making turns greater than 30 degrees, utilizing full rudder is crucial for effectively navigating at higher angles. The full rudder command engages the maximum angle of the rudder, allowing for a more aggressive turn and providing the necessary response for larger heading changes. This is particularly important in situations where rapid maneuverability is required to maintain course or avoid obstacles.

Employing full rudder ensures that the vessel can achieve a turn radius that is appropriate for the maneuver, as the hydrodynamics involved when the rudder is fully turned create a significant lateral force. This helps maintain control and ensures the ship can complete the turn efficiently without excessive loss of speed or stability.

In contrast, the other commands either do not provide enough steering input for such sharp turns or serve different purposes. For instance, half rudder might lead to insufficient maneuverability for wider turns, while no rudder indicates a neutral position rather than an active command. Emergency rudder is used in specific critical situations, such as loss of engine power or maneuvering under extreme conditions, rather than for general navigation commands like turns over 30 degrees.