The island of Luotsi-Kuusinen is a small island just to the south-east of Kotka Island. It is in the Baltics Sea at the Gulf of Finland. While Luotsi-Kuusinen used to be a proper island, an artificial road has been built to it.

The coast of Luotsi-Kuusinen is rocky with alot of pebbles and larger rocks.

A memorial to the fallen sailors of the Second Battle of Svensksund/Ruotsinsalmi is located on the coast of the island.

The inland of Luotsi-Kuusinen is partially untouched nature. However, a large part of the island is used by the Finnish Border Guard as a base for the coastal guard.