The island was an independent municipality of
Finland populated by Finns since at least the 16th century. The Seiskari municipality was formed from the
Koivisto municipality in 1903. It was part of the
province of Viipuri in the
South Karelia region. It was ceded to the
Soviet Union following the 1940
Moscow Peace Treaty. Prior to the transfer of sovereignty, it was also known as Siskar.
Shipwrecks The island has been involved in many shipwrecks over the centuries, including some ships sunk, wrecked or otherwise lost: • In 1777, the British ship
Mercey was wrecked near the island. She was on a voyage from Saint Petersburg to London. • In 1802, the Russian ship
Roman Vasselevitch was wrecked near the island. She was on a voyage from Saint Petersburg to London. • In 1807, the British ship
Nelly was driven ashore on Seskar island. She was on a voyage from London to Saint Petersburg.
Nelly was later refloated. • In 1815, the British ship
Graces was wrecked by Seskar. The crew was rescued. ==References==