Which action should you take if your boat runs aground?

If your boat runs aground, the appropriate action is to lift the outdrive and stop the engine. This is crucial because it helps prevent damage to the boat's propeller and engine as they can be harmed if they continue to be engaged while the boat is stuck. Lifting the outdrive reduces the risk of propeller damage while also allowing for a safer maneuver when attempting to dislodge the boat.

Assessing the situation before taking further action is essential. If the boat is stuck, immediate reversal may not be effective and could further harm the engine or the hull if significant force is exerted. Pushing the boat can be physically demanding and also risky, potentially pushing it further aground or causing injury. Signaling for help without assessing the situation fails to address the immediate need of understanding the conditions you're in, including water depth and potential hazards around the boat.

Overall, stopping the engine and lifting the outdrive creates a safer environment to evaluate the next steps for getting back to deeper water or calling for assistance if necessary.