The Suomenlinna ferry will run additional services on Saturday 22 October and Sunday 23 October.
The ferry will run from the Market Square 6.20am-2.20am and from Suomenlinna 6am-2am. At the busiest times of the day, the ferry will run every 20 minutes.
Passenger numbers on the ferry have been exceptionally high during the school autumn break. In addition, a large number of passengers is expected on the ferry during the weekend as the fortress island is a popular destination, for example, for Pokemon Go players.