The outlines of the first hydrographic surveys were marked in the 1980s navigational maps of the Chagos with a dotted line and the legend "existence doubtful" until the 1998 edition.
Os primeiros estudos hidrográficos na década de 1980 marcaron mapas de navegación das Chagos cunha liña de puntos e a lenda "existencia dubidosa" ata a edición de 1998.