Please answer the following question by reasoning step-by-step.
The helm is not something you wear on your head. Rather, it moves the masts on what?\nOptions:\n- sailing vessel\n- paddleboat\n- ship\n- motorboat\n- tugboat

sailing vessel
A helm is a tiller or wheel for steering a ship or boat.

Some ships with masts are sailing vessels.

.

The answer is sailing vessel