What should you do if your engine fails while on the water?

When your engine fails while on the water, the most prudent action is to use an anchor to secure your position and signal for help. This choice is the most effective response because it allows you to maintain a stable location, which can be crucial in preventing drifting into hazardous waters or collision with other vessels. Securing your position not only ensures safety but also makes it easier for rescuers to locate you.

In addition, signaling for help, whether through visual means like flares or using a radio, is vital to alert other boaters or rescue services that you are in need of assistance. This proactive approach is essential in ensuring a safe resolution to the situation.

The other options fail to prioritize safety and effective distress signaling. Trying to repair the engine immediately may not be feasible or safe if you're in a busy or precarious location. Continuing to drift puts you at risk of collisions or moving into dangerous areas, and merely turning on navigation lights without securing your position or signaling help does not adequately inform others of your distress situation.