If the combined weight of the vessel and its engine exceeds what percentage of the recommended load capacity of the trailer, a larger trailer should be used?

The correct answer reflects an important safety consideration when transporting a vessel on a trailer. When the combined weight of the vessel and its engine exceeds 90% of the recommended load capacity of the trailer, there is an increased risk of overloading the trailer. Overloading can lead to instability while towing, increased wear on the trailer, and potential failure of the trailer components such as axles and tires.

Using a trailer that can accommodate the full weight of the vessel and engine, ideally not exceeding its load capacity, is crucial for safe transportation. This means that if you're approaching or surpassing 90% of the load capacity, it is advisable to invest in a larger trailer to ensure safe handling and prevent accidents on the road.

Understanding this principle helps ensure that boaters prioritize safety and compliance with towing regulations. This common practice reinforces the idea that maintaining a margin below the load capacity can help manage unforeseen issues effectively.