When streaming a sea anchor, what should you ensure about the holding line?

When streaming a sea anchor, it is crucial for the holding line to be long enough to ensure that the pull is more horizontal than downward. This alignment is important because a horizontal pull allows the sea anchor to function effectively in maintaining the vessel's position against wind and water currents. When the angle is predominantly horizontal, the sea anchor can create the intended resistance and drag, stabilizing the vessel and preventing it from being pushed off course.

In contrast, if the line were too short, the pull would be too vertical, which could result in the sea anchor being ineffective, leading to less control over the vessel's directional stability. This could also place undue stress on the anchor and the holding line, making it less effective in turbulent conditions. Thus, ensuring an appropriate length allows the sea anchor to work optimally in maintaining the vessel's heading and stability.