How far could a make and break engine motor boat travel in 1920?

In 1920, a make-and-break engine motorboat could typically travel around 10 to 15 miles per hour, depending on its design and size. With a fuel capacity of about 10 to 20 gallons, these boats could potentially cover distances of 50 to 100 miles before needing to refuel. However, actual travel distance would vary based on factors like water conditions, load, and engine efficiency. Overall, they were suitable for shorter trips rather than long voyages.