The remaining four boats consisted of Maple Leaf VI.; a 39-feet Saunders boat fitted with two Rolls-Royce engines of 1,100 h.p. complete; the 8-metre, 450 h.p. Sunbeam-engined Despujols; and Tireless V., a Cox and King boat fitted with Green engine of 900 h.p.
The results of the trials were Maple Leaf V., Despujols, Maple Leaf VI., and lastly Tireless V. The time results were very disappointing, the winning boat having averaged little over 30 knots.
America had sent over three representatives in the form of Miss Detroit, of 38 feet length, and Miss America, of 26 feet, both fitted with 800 h.p. Smith Marine Twin motors, which were rebuilt Liberty aeroplane installations of two V-type engines of 400 h.p. each. The third boat was Whip-po’-Will, which during a preliminary run a few days earlier had burst into flame and sunk, and was a complete loss.
The total course of the race was 33 nautical miles, broken up into five rounds.
At the start of the first race on August 10th there was some dexterous manœuvring for the advantage of being first to get away, the boats circling round a space before the starting-line while three-minute signals were given. Harry managed to get Maple Leaf V. over the line first in great style, 12 seconds after the gun had fired. He was followed after an interval of 8 seconds by Miss Detroit, Miss America following but 1 second behind.
Maple Leaf VI., steered by Lieut.-Col. A. W. Tate, D.S.O., soon followed, and Despujols, steered by Sir A. G. Guiness, Bart., brought up the rear 33 seconds after the gun. At the end of the first round Miss America showed her superiority, leaving Maple Leaf V. to set the pace to Miss Detroit; Maple Leaf VI. throwing up spray and seeming to proceed by means of hops, gaining for herself the name of The Kangaroo, passed the line fourth, and Despujols last. The same order held for the second round, while in the third round Harry’s boat was seen to be in trouble, and in the fourth round seemed almost to stop. He managed, however, to complete the course well within the time limit on one engine, thereby qualifying for the second race. The race had been easily won by Miss America, followed by Maple Leaf VI. Miss Detroit had engine trouble, but finished the course.
The next day the weather proved good, the sea being quite calm—too calm for the British boats, who hoped for a choppy sea—and there was hardly a breath of wind blowing in Osborne Bay.
The start this time was a good one, Maple Leaf VI. being over the line first 7 seconds after the gun, the last man away being within 20 seconds. When the boats got thoroughly going the order was Miss America, Miss Detroit, Maple Leaf V., Maple Leaf VI., and Despujols. This order was maintained till the finish, Miss America winning easily. The actual times over the whole course of 33 miles were:
| Miss America | 37 min. 9⅕ sec. | |
| Miss Detroit | 37 min. 43⅘ sec. | |
| Maple Leaf V. | 37 min. 59 sec. | |
| Maple Leaf VI. | 40 min. 59⅕ sec. | |
| Despujols | 41 min. 5⅕ sec. |
The average speed of the winner over the whole course was slightly faster than in the first race, Miss America’s speed being 53·42 miles per hour as against her speed the day before of 51·45 miles per hour.