Helsingfors Segelklubb (Helsinki Sailing Club) is a yacht club in Lauttasaari, Helsinki (Finland). The yacht club also has a 12 acre island, Ormholmen, located at the tip of the Porkkala peninsula, 18 nautical miles southwest of the home harbor, with sauna baths, grill shelters and other facilities, and a 6-acre part of the Hasselholm island, in the Tammisaari archipelago, about 50 nautical miles to the west, with a house and a sauna to provide additional comforts for members.