CAPTAIN’S TEST

1. C. These sizes are all common for the US, and a 50-mm-diameter ball is the European standard.

2. D. A and C are the best answers, although B is also pretty good!

3. E. All of the above are absolutely necessary to consider before buying.

4. E. All of the above are great steps to take to get you back on the road.

5. D. A and B are the most likely locations to begin troubleshooting.

6. E. A and D are the best answers before you leave your towing rig for a day on the water.

CAPTAIN’S TESTS ONLINE

Test your knowledge of boating with more Captain’s Tests at boatingmag .com/captains-test.