The Grayson Navy are the space forces for the planet Grayson, a space nation in the Honor Harrington universe created by the science fiction author David Weber. In the internal history of the Honorverse, Grayson was settled by emigrants from Earth motivated by their religion, which called for a withdrawal from the technocratic society of Earth, a society the future inhabitants of Grayson believed to be subversive of true human potential and spirituality. The planet picked for the settlememnt was one very rich in heavy metals; local life had adapted, but human settlers suffered a very high death rate as well as a high rate of non-lethal, but debilitating poisonings from the high environmentyal levels of lead, mercury and antimony. The settlers' biology has partially adapted since, but to th