Landmark· Mamelles· Seychelles
Mamelles Island and Lighthouse
4° 28.8′ S · 55° 32.4′ E · approximate
A bare 6 ha granite islet 14 km northeast of Mahé shaped like two breasts (mamelles), with a lighthouse built in 1911 on its southern hill and terns nesting among the rocks: the main landmark on the run from Mahé toward Praslin.
Practical
Approximate: Wikipedia's coordinate is rounded to two decimals; plot from your chart. About 300 m by 210 m, uninhabited, with wild rabbits and seabirds. The RFA tanker Ennerdale wrecked on an uncharted pinnacle near here in 1970, so give the area a wide berth unless diving with a local centre.
Best for
Landmark and dive area on the Praslin run