Photo: Janika Mattila.
Korpoström by boat – a full day at the Archipelago Centre
In Korpoström, the highlight of the boat day is the Archipelago Centre: a guest harbour, changing archipelago-themed exhibitions, a restaurant and a shop all in one place. Restaurant customers can keep their boat in the harbour for two hours free of charge, and you can refuel in the harbour around the clock. The journey is longer than to the nearby islands, so set aside a full day for the trip.
Details checked against sources in October 2026.
Services on site
- Guest jetty
- Fuel
- Electricity
- Drinking water
- Toilet
- Shower
- Sauna
- Restaurant
- Shop
- Laundry
- Septic emptying
- Waste disposal
Many services are only open in the summer season, so check opening hours on the destination's website.
Why go to Korpoström?
The Korpoström Archipelago Centre lies on the southern edge of the main island of Korppoo (Korpo), on the shore of the Korpoström strait in the village of Österkalax, where the road ends and the sea begins. Completed in 2004, the visitor centre brings together science, nature, art and culture. The centre is also a base for the Archipelago National Park and a marine biology research station, and Metsähallitus, the Turunmaa Archipelago Foundation, the City of Parainen and Åbo Akademi University's environmental and marine biology unit all operate in the same building.
The Archipelago Centre is known for its changing art and archipelago exhibitions, which explore the nature, culture and phenomena of the archipelago. In summer, children can discover a marine biologist's work on the shore and in the laboratory at Junnulabra.
The Korpoström strait is a historic place: it was an important base for warships in the 18th and 19th centuries, and a naval battle between Russia and Sweden was fought there in 1743. A memorial erected in 1959 commemorates the battle.
Up-to-date information
- Korpoström Archipelago Centre (opens in a new tab)
- Guest harbour – Korpoström Archipelago Centre (opens in a new tab)
- Korpoström Archipelago Centre – Wikipedia (opens in a new tab)
- Korpoström guest harbour – Luontoon.fi (opens in a new tab)
- Korpoström Archipelago Centre – City of Parainen (opens in a new tab)
- Harbour guide: Korpoström – Kipparilehti (opens in a new tab)
Who is this trip for?
The trip suits groups who want to spend a full day on the water, people interested in archipelago nature and culture, and families with children, for whom the Archipelago Centre's summer Junnulabra offers things to do.
Korpoström can also be combined with the underwater nature trail at Stora Hästö, about three nautical miles to the south-west.
Route to Korpoström
Hovirinta → Korpoström
- Distance / one way
- 35 nm
- Travel time / one way
- approx. 1 h 35 min
- Fuel / one way
- approx. 26 l
- Fuel / round trip
- approx. 52 l
The fuel estimate is based on a consumption of 0.75 l/nm. Actual consumption depends on the weather, load and driving style.
Korpoström is one of our more distant destinations. In addition to the estimated travel time, allow plenty of time for the harbour, refuelling and the return trip, and keep an eye on the weather throughout the day.
Loading the map…
Travel times are estimates without stops and depend on the conditions. The round-trip fuel estimate assumes you return the same way. Also allow time for the destination itself and for the boat handover and safety briefing of approx. 30 minutes at the start of the rental.
Wind forecast: Korpoström
Loading the wind forecast…
Suggested plan for a full day trip
This is a flexible idea for a self-guided day trip to Korpoström.
- 01
Choose a departure point and look at its route and estimated travel time.
- 02
Set off in the morning so that you have time for an unhurried day in the harbour.
- 03
Visit the Archipelago Centre's exhibition and have lunch at the centre's restaurant.
- 04
Go and see the memorial to the naval battle of 1743.
- 05
Refuel at the harbour's fuel station if needed and start the return trip in good time, taking into account the weather and the boat's return time.
Harbour and Archipelago Centre
Korpoström guest harbour is at 60° 06.6′ N, 21° 36.0′ E, on chart 717. The jetties have room for about 70 boats, and the depth of the harbour basin varies between about 2.5 and 12 metres. Moor your boat carefully according to the harbour's instructions, as traffic on the fairway running along the edge of the harbour causes waves from time to time. The harbour is fully open in the summer season, and in autumn boats are welcome as long as the weather allows. Check the harbour's opening times on the Archipelago Centre's website.
The harbour fee includes electricity, water, public sauna hours, showers, toilets, a dishwashing area, waste disposal and septic emptying. A laundry is also available for a fee.
Harbour rules apply: swimming in the harbour basin is not allowed, engines must not be left idling, fires and fireworks are prohibited, and quiet hours are 23:00–07:00. Waste is taken to the waste station above the main building.
Important: the island of Gyltö to the west of Korpoström is a military area, and visiting the island is strictly prohibited.
The harbour recommends that children always wear life jackets in the harbour area.
Day visits, fees and refuelling
Restaurant customers can keep their boat in the harbour for two hours free of charge. Check the other harbour fees and terms on the harbour's website before you set off. Berth availability cannot be guaranteed in advance.
In summer, the Archipelago Centre has Restaurant Sunnan, whose food is made mainly from local producers' ingredients, the village shop Strandboden and a handicraft shop. The restaurant and shop close at the end of the summer season, so check the opening hours before your trip.
At the Archipelago Centre you can rent bicycles as well as sea kayaks or SUP boards, and kayaking trips and yoga are also organised.
The harbour's fuel station is available around the clock and has E98 petrol and diesel. The Buster Magnum runs on 98E5.
Up-to-date information
- Guest harbour – Korpoström Archipelago Centre (opens in a new tab)
- Korpoström Archipelago Centre – Wikipedia (opens in a new tab)
- Korpoström guest harbour – Luontoon.fi (opens in a new tab)
- Korpoström Archipelago Centre – City of Parainen (opens in a new tab)
- Harbour guide: Korpoström – Kipparilehti (opens in a new tab)
Accommodation in Korpoström
The Archipelago Centre Korpoström's hotel has 16 rooms. Check the hotel's opening times and availability on the Archipelago Centre's website, as the hotel may be closed in the winter season. Korpoström is a good place to stay overnight, even on a longer archipelago trip.
When you rent the Buster Magnum from us for several days or even a week, you can stay the night and continue your trip the next day. Book accommodation directly with the provider.
Remember before you set off
- Check the opening hours of the exhibition and the restaurant.
- Keep the children's life jackets on in the harbour area too.
- Pack clothing suitable for the weather and something to drink for the long crossing.
Shall we head to Korpoström?
Choose a departure point, look at the route and check the Buster Magnum's availability.
Friilo may open in Finnish – you can easily switch the language on the page.
See also
- NötöPlan a boat day to Nötö, an outer archipelago farming village. Route, travel time and tips for the harbour, refuelling, the café and walking trails.Read the trip guide
- RosalaPlan a boat day to Rosala. Route and tips for the village harbour, the Rosala Viking Centre, lunch and staying overnight the Viking way in the Kimitoön archipelago.Read the trip guide
- SeiliPlan a boat trip to Seili from Hovirinta in Kaarina or Särkänsalmi in Naantali. Travel estimates, trip tips and the Buster Magnum for rent.Read the trip guide
Similar destinations by theme: Harbours with saunas · Restaurant harbours · For families with children