Ritchie S-87 Voyager Surface Mount Compass The Ritchie S-87 Voyager features a compact low profile design and is easy to install. The brite white lettering combined with the built-in green night illumination makes this compass easy to read regardless of conditions. Built-in compensators allow for easy deviation adjustments on the go. High temp composite materials and with the hardened steel pivot dial create one tough compass that is built to last. Features Built-in Green Night Illumination Mova