 Wilhelm's frustration over his fleet's poor showing at the Fleet Review at his grandmother Queen Victoria's Diamond Jubilee celebrations, combined with his inability to exert German influence in South Africa following the dispatch of the Kruger telegram, led to Wilhelm taking definitive steps toward the construction of a fleet to rival that of his British cousins.Wilhelm was fortunate to be able to call on the services of the dynamic naval officer Alfred von Tirpitz, whom he appointed to the head of the Imperial Naval Office in 1897.The new admiral had conceived of what came to be known as the "Risk Theory" or the Tirpitz Plan, by which Germany could force Britain to accede to German demands in the international arena through the threat posed by a powerful battlefleet concentrated in the North Sea.