This article is about cruise ferries local to the Baltic Sea. See Cruising the Baltic Sea for international cruise ships visiting the Baltic Sea, and Boating on the Baltic Sea for independent boating.

There are many passenger ferries crossing the Baltic Sea, between all countries along its coastlines. Those between Sweden and Finland are in Sweden called Finlandsbåt ("Finland boat"), while in Finland Ruotsinlaiva or Sverigebåt ("Sweden boat").

Most of these ferries carry car traffic between countries and often also function as cruise ships for short shopping trips of 2–48 hours. Evening departures on the lines in the triangle Stockholm–Turku/Helsinki–Tallinn are — especially during weekends and holidays — wild party cruises, with heavy drinking and crowded dance floors. Other cruises tend to be more laid-back, with a larger portion of travellers who actually intend to visit a foreign country. The ferries from Germany to Finland, and some of those between Sweden and Finland, are quiet and Spartan ropax ferries, concentrating on trucks but providing a good alternative for some travellers too. Historically a number of ferries also carried trains, but this has diminished with the construction of fixed links, the rise of aviation and the opening of many European borders. The only two such ferries that remain serve the sea stretch on the Malmö–Berlin sleeper train. More such services exist for cargo.

If you have a day or more to spare in a city served by these ferries, consider a cruise. That would give low-cost accommodation, as well as on some routes a one-day stop in another city. On the Stockholm–Helsinki/Tallinn/Riga routes the ferries do the passage overnight and stay the day in port, allowing you to leave belongings locked in the cabin (and have access to your cabin) throughout the day in the city. The Turku–Stockholm ferries and Helsinki–Tallinn day tours return immediately, so you cannot even leave the ship without taking your belongings with you. Some evening departures on the latter route let you spend the night on board.

Occasional cruises are special events, such as music festivals or conferences. These might cost extra.

Ferries in general have on-line booking. Check for "Red tickets" or "Last minute offers" for cruises reaching Stockholm.

Note that both Viking and Tallink Silja may have a problem with accepting international credit cards. That is not a big problem in practice, as you can make a booking and pay it in the port with only a token extra charge (€3–5).

Tickets

If you intend to use the boats to travel between the cities, on some routes it is almost always cheaper to book a round-trip cruise (Sw: kryssning, Fi: risteily), or even two head-to-head cruises and discard the returns, rather than buy one-way tickets. Tickets can be had for as low as 80 SEK (USD $13, €10) for a full 4-person cabin, making it practically the cheapest accommodation one can find in a high-income country - at 10 SEK/night/person for a two-night Stockholm–Helsinki return cruise (provided you book early or last minute during the weekdays), and rarely (even for a weekend cruise in high season) exceeds 400 SEK for the cheapest 4-bed cabin. A one-way ticket, for a shared berth, in comparison, usually exceeds 1000 SEK.

Weather

Island in the Stockholm archipelago as seen from a cruise ferry in winter. Some snow on the ice.

As the Baltic Sea is rather small, swell dies out in a day or two, so the sea is rough mainly when the wind actually is strong. Many of the Baltic ferries are very large, with stabilisers or similar arrangements to reduce rolling, and on these rolling is gentle except in very rough seas. On the other hand, if there is a storm, restaurants are often closed, as serving the few that still want their dinner is not especially profitable. The situation is different on the ships not serving the cruise clientèle.

In winter (January–March) sea ice affects most shipping, but the large cruise ferries and the ro-pax ferries on lines over the Northern Baltic are built to go through the ice without assistance in normal conditions, and although timetables are not always kept, a cancelled tour is unusual. The southern parts of the sea freeze over only in very exceptional winters.

Major companies

Northern Baltic

The fairway to Stockholm is quite busy in evening and morning.

• Eckerö Line operates a 2000-passenger ferry between Tallinn and Helsinki. It often has the cheapest fares (especially on daily round-trips). It also has a connection between Grisslehamn in Sweden and Eckerö in Åland, the shortest passage over the Sea of Åland, under the original brand Eckerölinjen.
• Tallink/Silja Line between Sweden, Finland and Baltic states is a mid-market carrier, offering good standard of food, accommodation and entertainment for road-trips and entertainment cruises. The Silja Line ships between Stockholm and Helsinki meets the standard of many cruise ships.
• St. Peter Line two ships run between Stockholm, Helsinki, Tallinn and St. Petersburg.
• Viking Line operates between Sweden and Finland and Tallinn, competing closely with Silja and keeping similar standards.
• Wasaline operates between Vaasa (Finland) and Umeå (Sweden). It tries its best to mimic the atmosphere on day passages of the Turku–Stockholm ferries, although with a shorter passage and without tax free sales.

Southern Baltic

• Bornholmer Færgen between Germany, Sweden, mainland Denmark and Bornholm/Rønne
• DFDS Seaways between Kiel, Karlshamn, Copenhagen and Klaipėda.
• Kołobrzeska Żegluga Pasażerska Kołobrzeg (Poland)–Bornholm/Nexø.
• Polferries : Świnoujście–Copenhagen, Świnoujście–Ystad, Gdańsk–Nynäshamn/Stockholm.
• Scandlines Denmark, Sweden, Germany and Latvia.
• Stena Line between ports in Poland, Sweden, Germany, Denmark and Norway.
• TT Line between Travemünde and Rostock in Germany and Trelleborg in Sweden, Klaipėda–Trelleborg.
• Unity Line between Świnoujście and Ystad in Sweden.

Northern and southern Baltic

• Finnlines links most countries with Baltic ports. Operates the longest ferry trip on Baltic Sea – two and a half day cruise from Lübeck to St. Petersburg via Sassnitz and Ventspils.

Sleep

Two-person interior cabin with beds packed away in the day. Note the "window". The standard cabins have bunk beds.

For overnight cruises, the ticket price is per cabin. A regular cabin accommodates four passengers, holds a standard comparable to two-star hotel room (toilet, shower, soap, towels, reading light), and is much cheaper than a hotel room in Stockholm or Helsinki. The cheapest (C-class and some of the B-class) cabins have no windows, but cabins and suites of higher standard are also available. Some ferries return immediately and you might have to spend some time ashore before the destination city awakes.

The ferries between the Stockholm and Turku regions have very tight schedules with just an hour in port, which means cleaning of cabins is started very early (unless you have a return ticket). Do not count on being able to sleep until just before the ferry arrives. In summer (with early sunrise) waking up for the pricey but plentiful breakfast and watching the huge archipelago while approaching may be a good option.

If crossing the Northern Baltic in winter, check the cabin location, as going through ice causes quite horrible noise for those most affected.

When travelling between Helsinki and Tallinn during the day, the trip is so short (about two and a half hours) that a cabin is not needed, you can just pay for the trip itself and stay on the decks for the whole trip.

Eat

Buffet servings, here cold cuts and salads

Most cruise ferries have several cafés and restaurants at all price levels (although the budget options will not keep your hunger away), at a standard typical to Sweden and Finland; you know what you get, but you won't be impressed. The most famous one is an all-you-can-eat Nordic buffet/smörgåsbord at around €30. Should traditionally be eaten as seven servings; herring, other seafood, cold cuts, warm meat, sausage, cheese and dessert.

For booked tables – or any programme you do not want to miss – when your origin and destination are in different time zones (eg. Tallinn to Stockholm), inquiry in advance which timezone is used, as it usually is ship's time that counts, not the actual time zone, even if called "local time". A typical scheme is using the time of the departure port for all the voyage.

Drink

Drinks in the bar are slightly cheaper than in regular Swedish or Finnish pubs, although expensive compared with the ones in Estonia, Latvia and Russia. Cocktails start around €8.

On some party cruises, alcoholic beverages may not be brought on board. The crew might search passengers' luggage for them. St.Peter Line actually x-rays your luggage to look for alcoholic beverages when boarding as a pedestrian. Any such bottles will be taken away, you'll get a receipt and get the bottles back at the information desk the next morning half an hour before arrival.

Buy

The "promenade" on Silja Symphony is lined with restaurants and shops.

Most cruise ferries between Sweden and Finland make a stop at Åland, to earn the legal opportunity to host duty-free shopping (as Åland for tax purposes isn't part of the EU). These stores, with alcohol and tobacco prices far below Swedish and Finnish levels, are the main attraction for many passengers. Consumption on board is officially not allowed, but happens all the time. At weekend party cruises, these stores do not sell alcohol during the evening. Also cruises to or from Russia have duty free shops, although much smaller ones.

The stores also offer the classical duty-free supply of perfume, make-up and sweets. Some ships also have shops for clothing, toys and other consumer goods. Know what you'd pay elsewhere if trying to make bargains.

Ferries accept credit cards, and at least local currencies (in most cases euro and Swedish krona). Payment by AndroidPay / ApplePay (and PayPass / Visa PayWave) is frequently not accepted on Tallinn-Stockholm ferry by Tallink.

Do

• Gambling at slot machines and roulette tables. Drinking and gambling are a combination better for those that get the money than for your own wallet – keep to your budget (even if the net income at least on Finnish ships is redistributed to good causes).
• Social dancing to live music. Nightclubs. Karaoke. The clientèle and performers vary depending on day of week, departure port and time of year.
• Most cruises have playrooms for children, and child activities.
• Sunbathing at the upper deck, if the weather allows.
• Sauna. Separate for male and female, so no bathing suits are needed there. Some ships also have a common area, with a hot tub or a pool. The entry fee may be in the €7 range.

See

Elevated view of e.g. the Stockholm archipelago, Åland and the Finnish Archipelago Sea (depending on route). Stage performances nightly and often now and then also in the day.

Stay safe

Ship safety is serious business on these ships, with experience from the M/S Estonia disaster in 1994. Do not enter restriced areas. Avoid the open deck at night and in harsh weather. Smoking is only permitted in designated compartments.

To make an understatement, drunkenness is common on these ferries in the night, and differences in languages and manners often provoke conflicts. While security guards tend to forgive drunkenness itself, they punish violent passengers by locking them up in a detention cell for the rest of the journey, or even marooning them in a foreign port.

Cabin parties are common, but security will respond when guests in the cabin area disturb the neighbours.

Avoid going alone to strangers' cabins. If something nasty happens, do report it as soon as possible.

Connect

In Tallinn-Stockholm by Tallink (and probably on most other cruise ferries), Wi-Fi Internet is available in common areas and higher-class cabins throughout the trip, access is by individual password printed on each passenger's ticket or told at the reception on request. Mobile voice and data connection is good during the evening and morning.

Go next

Saint Petersburg cruises include time in town. Cruise passengers are exempted from visa requirements (check the terms).

A 40-hour cruise Stockholm–Helsinki, Stockholm–Tallinn, Stockholm–Riga or vice versa includes an 8-hour stop in each city, enough for visitors to make a short tour.

Between Stockholm and Turku returning with the same ship means 23-hour cruises, without time ashore.

The pass over Gulf of Finland is short enough to give time in Helsinki or Tallinn, if taking a morning ferry and returning in the evening.