During an UNREP, what is the degree range used to test for positive rudder control?

The degree range used to test for positive rudder control during an Underway Replenishment (UNREP) is 1-2 degrees toward the UNREP ship. This range is critical for ensuring that the vessel can effectively maintain its position relative to the supply ship without oversteering, which might destabilize the approach or compromise safety during the replenishment operation.

Testing with a 1-2 degree rudder angle allows for precise control and responsiveness, essential in the dynamic environment of an UNREP, where vessels are often operating in close proximity to one another. Such small adjustments enable the helmsman to ensure that the ship stays on track and compensates for any external forces like current or wind that may push the ship off course. This careful maneuvering is vital for maintaining positional integrity and ensuring a safe, efficient UNREP operation.