m/s kerttu

Cruises on M/S Kerttu


Cruises on M/S Kerttu are organised in Uusikaupunki during the open water season. On board Kerttu, you can cruise to the lighthouse island or do a sightseeing tour of the archipelago. Kerttu is also available for chartered cruises.

From June to August, Kerttu sails to the Isokari lighthouse island on a regular schedule. The Isokari cruise includes, in addition to the return trip, lunch and a guided tour of Isokari as well as access to the lighthouse. There are also cruises from Kustavi to Isokari in July.

On Fridays during high summer, Kerttu does sightseeing tours of the inner archipelago: on the 2-hour evening cruise, you can enjoy the relaxing sea, fun programme, and Kerttu’s summery treats. The ship is fully licensed to serve alcohol.

Tickets for a trip to Isokari can be booked online. Tickets can also be purchased directly from the ship on the day of the trip if there is room left. For the sightseeing trip on Friday, you can buy your ticket directly from the ship.

Kerttu’s departure pier is at the city guest harbour, right behind Pakkahuone, address Pakkahuoneenkuja. Welcome!

Cruises to the Isokari lighthouse island from Uusikaupunki

May 14, 19, 26 and 28. June-August: Wed-Sun (excl. June 24)
September 1.-17 Fri, Sat and Sun.

Timetable: Uusikaupunki–Isokari 10.30 am – 12 pm.
Isokari–Uusikaupunki 4–5.30 pm.   

Tickets:  adults 78 €, children 4–12 yo 35 €
children 0–3 yo free admission.

Price incl. return sea transportation, lunch at Isokari, guided tour of Isokari, and admission into the lighthouse.

Round trips are also available during the cruise season (does not include guided tour, entrance to the lighthouse or meals). Prices adults 50 €, children 4-12 yo 20 €, children 0-3 yo free admission. With advance booking.

To the Isokari lighthouse island from Kustavi

In July Wed, Thu and Sat from 1.30-8.00 pm.
In August Thu and Sat 3, 5, 10 and 12 from 1.30-8.00 pm.
Departure from Kustavi, Lootholma, Kuninkaantie 193, Kustavi.

Prices: adults 85 €, children 4–12 yo 42 €, 0-3 yo free admission.
Price incl. return sea transportation, guided tour of Isokari, coffee and sandwich at Isokari and admission into the lighthouse.

Friday sightseeing-cruises

Enjoy the Uusikaupunki summer on the waves!

June 16 and 30 from 6-8 pm. July 14 – August 11 on Fridays 6-8 pm.
Tickets adults 20 €, children 4-12 yo 10 €.

Seal safaris to the Sandbäck seal reserve

May 7, 13, 18, and 20. Also June 4 and 10. Departure from Uusikaupunki at 9 am, return at 5.30 pm. See the travel package: merikauppa.isokari.fi

Prices: adults 130 €, children under 12 yo 60 €.
Price incl. sea transportation Uki-Sandbäck-Isokari-Uki, coffee on board, lunch and admission into the lighthouse.

Bird-watching trips to Isokari

May 6, 21 and 27. Departure from Uusikaupunki at 8 am, return at 5.30 pm.
Prices 85 € /adult, 40 €/4-12 yo child.


Yoga weekend August 18-20.

Ancient Fires cruise to Isokari on 26 August 3–11 pm.

See cruises to the Katanpää island from here!


Tickets and bookings

info [at] isokari.fi


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Tickets and bookings

Tel. +358 (0)40 1866 350