Svartholm Sea Fortress is managed by Metsähallitus.

The operations on the island, as well as the maintenance of service structures and customer service, are the responsibility of the City of Loviisa.

Customer Service - Visit Kotka-Hamina
Phone: +358 40 135 6588
Email: info(at)visitkotkahamina.fi
Website: Visit Kotka-Hamina
Visit Svartholm (in finnish)