The Kru or Kroo are a West African ethnic group who are indigenous to eastern Liberia and migrated and settled along various points of the West African coast, notably Freetown, Sierra Leone, but also the Ivorian and Nigerian coasts. The Kru were famous for their skills in navigating and sailing the Atlantic. Their maritime expertise evolved along the west coast of Africa as they made livings as fishermen and traders. Knowing the in-shore waters of the western coast of Africa, and having nautical experience, they were employed as sailors, navigators and interpreters aboard slave ships, as well as American and British warships used against the slave trade.