Porter's commerce-raiding claims exceeded the strategic cost imposed

Porter claimed twenty-five million dollars in damage and six million dollars in British countermeasures, but this assessment finds a smaller strategic effect. Britain had released more than a hundred frigates from the struggle against Napoleon, alongside larger and smaller warships. A single silver ship could have represented a far more valuable prize than a whaler, yet its armament and motivated crew would have made it difficult for Essex to capture. The response to Porter mainly used standard frigates suited to the station's regular merchant-protection duties. Sending a razee or a ship of the line would have represented a larger commitment. The volume of Porter's captures therefore does not by itself establish that his cruise caused the greatest difficulty for Britain.