Before revision: It was the first naval engagement between both navies and it took place in front of Huanillos, off the (then) Bolivian coast, as the and gunboat found the on its way to Iquique.
After revision: It was the first naval engagement between both navies and took place in front of Huanillos, off the (then) Bolivian coast, as the and gunboat found the on its way to Iquique.