US PT trials chose several usable designs

Elco brought a British Power Boat-derived design and associated tooling into the American competition, while Huckins, Higgins, and the Philadelphia Navy Yard offered other approaches. Open-ocean trials did not yield a single flawless winner: stronger hulls could be slower, while faster designs carried other compromises. The resulting recommendations standardised the Packard power plant and accepted several designs, with changes requested to correct particular weaknesses. The Philadelphia Navy Yard boat, burdened with excess weight and naval-standard fittings instead of speedboat practice, was the design not pursued. The outcome was an early example of procurement responding to trade-offs by buying from more than one viable civilian supplier.