One of the most recognizable designs is the Kelvin-White binnacle, which features two distinctive iron spheres—often called "Navigator’s Balls" or Flinders bars.
Originally, binnacles were small wooden cupboards or boxes. They served as a "guiding light" for sailors, housing the compass alongside a lamp for night navigation. Before the 19th century, the presence of iron in ships often caused significant compass errors, leading to the development of more complex binnacle designs to ensure accuracy. The Kelvin-White Binnacle binnacle
: High-quality binnacles were often made of brass or copper to remain non-magnetic and withstand harsh salt-spray environments. Evolution in Modern Sailing One of the most recognizable designs is the
In contemporary maritime use, the binnacle has evolved beyond a simple compass housing. Before the 19th century, the presence of iron
: The term lives on through various nautical publications and clubs, such as "The Binnacle" newsletters from organizations like the Columbia Yacht Club or the Victoria Model Shipbuilding Society.
: These spheres act as "compensators" to neutralize the magnetic interference from the ship’s own hull.