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A ferry is a watercraft that carries passengers, and sometimes vehicles and cargo, across a body of water. A small passenger ferry with many stops, such as in Venice, Italy, is sometimes called a water taxi or water bus.
Ferries form a part of the public transport systems of many waterside cities and islands, allowing direct transit between points at a capital cost much lower than bridges or tunnels. Ship connections of much larger distances (such as over long distances in water bodies like the Mediterranean Sea) may also be called ferry services, and many carry vehicles.
The profession of the ferryman is embodied in Greek mythology in Charon, the boatman who transported souls across the River Styx to the Underworld.
Speculation that a pair of oxen propelled a ship having a water wheel can be found in 4th century Roman literature "Anonymus De Rebus Bellicis". Though impractical, there is no reason why it could not work and such a ferry, modified by using horses, was used in Lake Champlain in 19th-century America. See Experiment (horse powered boat).
In 1850 the roll-on roll-off (ro-ro) ferry, Leviathan designed to carry freight wagons efficiently across the Firth of Forth in Scotland started to operate between Granton, near Edinburgh, and Burntisland in Fife. The vessel design was highly innovative and the ability to move freight in great quantities and with minimal labour signalled the way ahead for sea-borne transport, converting the ro-ro ferry from an experimental and marginal ship type into one of central importance in the transport of goods and passengers.
In 1871, the world's first ferry ship was created in Istanbul. The iron steamship, named Suhulet (meaning 'ease' or 'convenience') was designed by the general manager of Şirket-i Hayriye (Bosporus Steam Navigation Company), Giritli Hüseyin Haki Bey and built by a British shipbuilder. It weighed 157 tons. It was 155 feet (47 meters) long, 27 feet (8.2 meters) wide, and had a draft of 9 feet (2.7 meters). It was capable of travelling up to 6 knots with the side wheel turned by its 450-horsepower, single-cylinder, two-cycle steam engine.
Launched in 1872, Suhulet's unique features consisted of a symmetrical entry and exit for horse carriages, along with a dual system of hatchways. The ferry operated on the Üsküdar-Kabataş route, which is still serviced by modern ferries today.
In Hong Kong, Star Ferry carry passengers across Victoria Harbour. Other carriers ferry travellers between Hong Kong Island and outlying islands like Cheung Chau, Lantau Island and Lamma Island.
The Malaysian state of Penang is home to the oldest ferry service in the country. This service, now renamed Rapid Ferry, connects the Raja Tun Uda Ferry Terminal at Weld Quay in George Town on Penang Island with the Sultan Abdul Halim Ferry Terminal in Butterworth on Peninsular Malaysia. It has also become a tourist attraction among foreigners.
A ferry underway in Penang, Malaysia.
In the Philippines, the Philippine Nautical Highway System forms the backbone of the nationwide transport system by integrating ports with highway systems. The system has three main routes. Another known ferry service is the Pasig River Ferry Service, which is the only water-based transportation in Metro Manila. This system cruises the Pasig River.
India's ro-ro ferry service between Ghogha and Dahej was inaugurated by Prime Minister Narendra Modi on 22 October 2017. It aims to connect South Gujarat and Saurashtra currently separated by 360 kilometres (220 mi) of roadway to 31 kilometres (19 mi) of ferry service. It is a part of the larger Sagar Mala project.
Water transport in Mumbai consists of ferries, hovercraft, and catamarans, operated by various government agencies as well as private entities. The Kerala State Water Transport Department (SWTD), operating under the Ministry of Transport, Government of Kerala, India regulates the inland navigation systems in the Indian state of Kerala and provides inland water transport facilities. It stands for catering to the passenger and cargo traffic needs of the inhabitants of the waterlogged areas of the Districts of Alappuzha, Kottayam, Kollam, Ernakulam, Kannur and Kasargode. SWTD ferry service is also one of the most affordable modes to enjoy the beauty of the scenic Kerala backwaters.
Further information: List of ferry operators in Japan
Japan used to rely heavily on ferries for passenger and goods transportation among the four main islands of Hokkaido, Honshu, Shikoku and Kyushu. However, as highway and railway bridges and undersea tunnels (such as the Seikan Tunnel and Honshū–Shikoku Bridge Project) have been constructed, the ferry transportation has recently become for short-distance sightseeing passengers with or without car, and for long distance truck drivers hauling goods. 
Inside a short distance ferry, the Yamagawa-Nejime FerryKagoshima, Japan (2023).,
Due to the geographical features of Russia, it has a large number of both sea and river ferry crossings. Car ferries operate from the continental part of Russia to Sakhalin, Kamchatka and Japan. The Ust-Luga - Kaliningrad ferry also runs, until February 2022 ferries also ran from St. Petersburg to different cities of the Baltic Sea. Before the construction of the Kerch Bridge, there was a ferry across the Kerch Strait, whose service was resumed after the Kerch bridge explosion. There are also more than 100 ferry crossings on different rivers in Russia. These are usually symmetrical through ferries with two ramps for quick entry and exit of cars. For some categories of car owners, these ferries may be free if there is no alternative crossing of the river.
The busiest seaway in the world, the English Channel, connects Great Britain and mainland Europe, with ships sailing from the UK ports of Dover, Newhaven, Poole, Portsmouth and Plymouth to French ports, such as Calais, Dunkirk, Dieppe, Roscoff, Cherbourg-Octeville, Caen, St Malo and Le Havre. The busiest ferry route to France is the Dover to Calais crossing with approximately 9,168,000 passengers using the service in 2018. Ferries from Great Britain also sail to Belgium, the Netherlands, Norway, Spain and Ireland. Some ferries carry mainly tourist traffic, but most also carry freight, and some are exclusively for the use of freight lorries. In Britain, car-carrying ferries are sometimes referred to as RORO (roll-on, roll-off) for the ease by which vehicles can board and leave.
The busiest single ferry route in terms of the number of departures is across the northern part of Øresund, between Helsingborg, Scania, Sweden and Elsinore, Denmark. Before the Øresund bridge was opened in July 2000, car and "car and train" ferries departed up to seven times every hour (every 8.5 minutes). This has since been reduced, but a car ferry still departs from each harbor every 15 minutes during daytime. The route is around 2.2 nautical miles (4.1 km; 2.5 mi) and the crossing takes 22 minutes. Today, all ferries on this route are constructed so that they do not need to turn around in the harbors. This also means that the ferries lack stems and sterns, since the vessels sail in both directions. Starboard and port-side are dynamic, depending on the direction the ferry sails. Despite the short crossing, the ferries are equipped with restaurants (on three out of four ferries), cafeterias, and kiosks. Passengers without cars often make a double or triple return journey in the restaurants; for this, a single journey ticket is sufficient. Passenger and bicycle passenger tickets are inexpensive compared with longer routes.
Large cruiseferries sail in the Baltic Sea between Finland, Åland, Sweden, Estonia, Latvia and Saint Petersburg, Russia and from Italy to Sardinia, Corsica, Spain and Greece. In many ways, these ferries are like cruise ships, but they can also carry hundreds of cars on car decks. Besides providing passenger and car transport across the sea, Baltic Sea cruise-ferries are a popular tourist destination unto themselves, with multiple restaurants, nightclubs, bars, shops and entertainment on board. Also many smaller ferries operate on domestic routes in Finland, Sweden and Estonia.
The south-west and southern parts of the Baltic Sea has several routes mainly for heavy traffic and cars. The ferry routes of Trelleborg-Rostock, Trelleborg-Travemünde, Trelleborg-Świnoujście, Gedser-Rostock, Gdynia-Karlskrona, and Ystad-Świnoujście are all typical transports ferries. On the longer of these routes, simple cabins are available. The Rødby-Puttgarden route also transports day passenger trains between Copenhagen and Hamburg, and on the Trelleborg-Sassnitz route, it also has capacities for the daily night trains between Berlin and Malmö.
In Istanbul, ferries connect the European and Asian shores of Bosphorus, as well as Princes' Islands and nearby coastal towns. In 2014, İDO transported 47 million passengers, the largest ferry system in the world.
The world's shortest ferry line is the Ferry Lina in Töreboda, Sweden. It takes around 20–25 seconds and is hand powered.
Due to the numbers of large freshwater lakes and length of shoreline in Canada, various provinces and territories have ferry services.
BC Ferries operates the third largest ferry service in the world which carries travellers between Vancouver Island and the British Columbia mainland on the country's west coast. This ferry service operates to other islands including the Gulf Islands and Haida Gwaii. In 2015, BC Ferries carried more than 8 million vehicles and 20 million passengers. In Vancouver there is SeaBus.
Canada's east coast has been home to numerous inter- and intra-provincial ferry and coastal services, including a large network operated by the federal government under CN Marine and later Marine Atlantic. Private and publicly owned ferry operations in eastern Canada include Marine Atlantic, serving the island of Newfoundland, as well as Bay, NFL, CTMA, Coastal Transport, and STQ. Canadian waters in the Great Lakes once hosted numerous ferry services, but these have been reduced to those offered by Owen Sound Transportation and several smaller operations. There are also several commuter passenger ferry services operated in major cities, such as Metro Transit in Halifax, and Toronto Island ferries in Toronto. There is also the Société des traversiers du Québec.
Due to the North Carolina coast's geography, consisting of numerous sounds, inlets, tidal arms, and islands, ferry transportation is essential in the region. The state operates twelve routes, eight of which are under the oversight of the North Carolina Department of Transportation Ferry Division, three of which are under the direct oversight of the North Carolina Department of Transportation, and one of which is under the oversight of the North Carolina Division of Parks and Recreation. Three of the Ferry Division routes are tolled, and all ferry routes operated by the North Carolina Department of Transportation carry both vehicles and pedestrians, although certain vessels only carry pedestrians and cyclists. The National Park Service additionally works with private companies to offer ferry service to locations such as Cape Lookout and Portsmouth.
Washington State Ferries operates the most extensive ferry system in the continental United States and the second largest in the world by vehicles carried, with ten routes on Puget Sound and the Strait of Juan de Fuca serving terminals in Washington and Vancouver Island. In 2016, Washington State Ferries carried 10.5 million vehicles and 24.2 million riders in total.
The Alaska Marine Highway System provides service between Bellingham, Washington and various towns and villages throughout Southeast and Southwest Alaska, including crossings of the Gulf of Alaska. AMHS provides affordable access to many small communities with no road connection or airport.
The Staten Island Ferry in New York City, sailing between the boroughs of Manhattan and Staten Island, is the nation's single busiest ferry route by passenger volume. Unlike riders on many other ferry services, Staten Island Ferry passengers do not pay any fare to ride it. New York City also has a network of smaller ferries, or water taxis, that shuttle commuters along the Hudson River from locations in New Jersey and Northern Manhattan down to the midtown, downtown and Wall Street business centers. Several ferry companies also offer service linking midtown and lower Manhattan with locations in the boroughs of Queens and Brooklyn, crossing the city's East River. New York City Mayor Bill de Blasio announced in February 2015 that city would begin an expanded Citywide Ferry Service, and launched as NYC Ferry in 2017, linking heretofore relatively isolated communities such as Manhattan's Lower East Side, Soundview in The Bronx, Astoria and the Rockaways in Queens and such Brooklyn neighborhoods as Bay Ridge, Sunset Park, and Red Hook with existing ferry landings in Lower Manhattan and Midtown Manhattan. There was a second expansion phase which connected Staten Island to the West Side of Manhattan, and added a stop in Throgs Neck, in the Bronx. NYC Ferry is now the largest passenger fleet in the United States.
The New Orleans area also has many ferries in operation that carry both vehicles and pedestrians. Most notable is the Algiers Ferry. This service has been in continuous operation since 1827 and is one of the oldest operating ferries in North America. In New England, vehicle-carrying ferry services between mainland Cape Cod and the islands of Martha's Vineyard and Nantucket are operated by The Woods Hole, Martha's Vineyard and Nantucket Steamship Authority, which sails year-round between Woods Hole and Vineyard Haven as well as Hyannis and Nantucket. Seasonal service is also operated from Woods Hole to Oak Bluffs from Memorial Day to Labor Day. As there are no bridges or tunnels connecting the islands to the mainland, The Steamship Authority ferries in addition to being the only method for transporting private cars to or from the islands, also serves as the only link by which heavy freight and supplies such as food and gasoline can be trucked to the islands. Additionally, Hy-Line Cruises operates high speed catamaran service from Hyannis to both islands, as well as traditional ferries, and several smaller operations run seasonal passenger only service primarily geared towards tourist day-trippers from other mainland ports, including New Bedford, (New Bedford Fast Ferry) Falmouth, (Island Queen ferry and Falmouth Ferry) and Harwich (Freedom Cruise Line). Ferries also bring riders and vehicles across Long Island Sound to such Connecticut cities as Bridgeport and New London, and to Block Island in Rhode Island from points on Long Island.
Transbay commuting in the San Francisco Bay Area was primarily ferry based until the advent of automobiles in the 1940s and most bridges in the area were built to supplant ferry services. By the 1970s, ferries were primarily used by tourists with Golden Gate Ferry, an organization under the ownership as the same governing body as the Golden Gate Bridge, left as the sole commute operator. The 1989 Loma Prieta earthquake prompted restoration of service to the East Bay. The modern ferry network is primarily under the authority of San Francisco Bay Ferry, connecting with cities as far as Vallejo. Tourist excursions are also offered by Blue & Gold Fleet and Red & White Fleet. A ferry serves Angel Island (which also accepts private craft). Alcatraz is served exclusively by ferry service administered by the National Park Service.
Main article: Ferries of San Francisco Bay
Until the completion of the Mackinac Bridge in the 1950s, ferries were used for vehicle transportation between the Lower and the Upper Peninsulas of Michigan, across the Straits of Mackinac in the United States. Ferry service for bicycles and passengers continues across the straits for transport to Mackinac Island, where motorized vehicles are almost completely prohibited. This crossing is made possible by two ferry lines Shepler's Ferry and Mackinac Island Ferry Company (formerly Star Line).
A ferry service runs between Milwaukee, Wisconsin and Muskegon, Michigan operated by Lake Express. Another ferry SS Badger operates between Manitowoc, Wisconsin and Ludington, Michigan. Both cross Lake Michigan.
Numerous additional inland ferry routes exist in the United States, such as the Cave-In-Rock Ferry across the Ohio River, and the Benton-Houston Ferry across the Tennessee River.
Mexico has ferry services run by Baja Ferries that connect La Paz located on the Baja California Peninsula with Mazatlán and Topolobampo. Passenger ferries also run from Playa del Carmen to the island of Cozumel.
There are several ferries in South America.
Chacao Channel has ferry lines.
In Australia, two Spirit of Tasmania ferries carry passengers and vehicles 450 kilometres (280 mi) across Bass Strait, the body of water that separates Tasmania from the Australian mainland, often under turbulent sea conditions. These run overnight but also include day crossings in peak time. Both ferries are based in the northern Tasmanian port city of Devonport and sail to Geelong. Before Geelong this ferry used to sail to Melbourne.
The double-ended Freshwater-class ferry cuts an iconic shape as it makes its way up and down Sydney Harbour New South Wales, Australia between Manly and Circular Quay
In New Zealand, ferries connect Wellington in the North Island with Picton in the South Island, linking New Zealand's two main islands. The route is 92 kilometres (57 mi), and is run by two companies – government-owned Interislander, and independent Bluebridge, who say the trip takes three and half hours.
The Manly Ferry 'MV Freshwater'
Ferry designs depend on the length of the route, the passenger or vehicle capacity required, speed requirements and the water conditions the craft must deal with.
Double-ended ferries have interchangeable bows and sterns, allowing them to shuttle back and forth between two terminals without having to turn around. Well-known double-ended ferry systems include the BC Ferries, the Staten Island Ferry, Washington State Ferries, Star Ferry, several ferries on the North Carolina Ferry System, and the Lake Champlain Transportation Company. Most Norwegian fjord and coastal ferries are double-ended vessels. All ferries from southern Prince Edward Island to the mainland of Canada were double-ended. This service was discontinued upon completion of the Confederation Bridge. Some ferries in Sydney, Australia and British Columbia are also double-ended. In 2008, BC Ferries launched the first of the Coastal-class ferries, which at the time were the world's largest double enders. These were surpassed as the world's largest double-enders when P&O Ferries launched their first double-ender, called the P&O Pioneer, which entered service in june 2023 replacing Pride of Kent.
Hydrofoils have the advantage of higher cruising speeds, succeeding hovercraft on some English Channel routes where the ferries now compete against the Eurotunnel and Eurostar trains that use the Channel Tunnel. Passenger-only hydrofoils also proved a practical, fast and relatively economical solution in the Canary Islands, but were recently replaced by faster catamaran "high speed" ferries that can carry cars. Their replacement by the larger craft is seen by critics as a retrograde step given that the new vessels use much more fuel and foster the inappropriate use of cars in islands already suffering from the impact of mass tourism.
Hovercraft were developed in the 1960s and 1970s to carry cars. The largest was the massive SR.N4 which carried cars in its centre section with ramps at the bow and stern between England and France. The hovercraft was superseded by catamarans which are nearly as fast and are less affected by sea and weather conditions. Only one service now remains, a foot passenger service between Portsmouth and the Isle of Wight run by Hovertravel.
Since 1990 high speed catamarans have revolutionised ferry services, replacing hovercraft, hydrofoils and conventional monohull ferries. In the 1990s there were a variety of builders, but the industry has consolidated to two builders of large vehicular ferries between 60 and 120 metres. Incat of Hobart, Tasmania favours a Wave-piercing hull to deliver a smooth ride, while Austal of Perth, Western Australia builds ships based on SWATH designs. Both these companies also compete in the smaller river ferry industry with a number of other ship builders.
Stena Line once operated the largest catamarans in the world, the Stena HSS class, between the United Kingdom and Ireland. These waterjet-powered vessels, displaced 19,638 tonnes, accommodating 375 passenger cars and 1,500 passengers. Other examples of these super-size catamarans are found in the Condor Ferries fleet with the Condor Voyager and Rapide.
Roll-on/roll-off ferries (RORO) are large conventional ferries named for the ease by which vehicles can board and leave.
A cruiseferry is a ship that combines the features of a cruise ship with a roll-on/roll-off ferry. They are also known as RoPax for their combined Roll on/Roll Off and passenger design.
Fast RoPax ferries are conventional ferries with a large garage intake and a relatively large passenger capacity, with conventional diesel propulsion and propellers that sail over 25 knots (46 km/h; 29 mph). Pioneering this class of ferries was Attica Group, when it introduced Superfast I between Greece and Italy in 1995 through its subsidiary company Superfast Ferries. Cabins, if existent, are much smaller than those on cruise ships.
This type of ferry allows vehicles to load from the "side". The vehicle platform can be turned. When loading, the platform is turned sideways to allow sideways loading of vehicles. Then the platform is turned back, in line with the vessel, and the journey across water is made.
Pontoon ferries carry vehicles across rivers and lakes and are widely used in less-developed countries with large rivers where the cost of bridge construction is prohibitive. One or more vehicles are carried on a pontoon with ramps at either end for vehicles to drive on and off. Cable ferries are usually pontoon ferries, but pontoon ferries on larger rivers are motorised and able to be steered independently like a boat.
Main article: Train ferry
A train ferry is a ship designed to carry railway vehicles. Typically, one level of the ship is fitted with railway tracks, and the vessel has a door at either or both of the front and rear to give access to the wharves.
Foot ferries are small craft used to ferry foot passengers, and often also cyclists, over rivers. These are either self-propelled craft or cable ferries. Such ferries are for example to be found on the lower River Scheldt in Belgium and in particular the Netherlands. Regular foot ferry service also exists in the capital of the Czech Republic, Prague, and across the Yarra River in Melbourne, Australia at Newport. Restored, expanded ferry service in the Port of New York and New Jersey uses boats for pedestrians only.
Very short distances may be crossed by a cable or chain ferry, which is usually a pontoon ferry (see above), where the ferry is propelled along and steered by cables connected to each shore. Sometimes the cable ferry is human powered by someone on the boat. Reaction ferries are cable ferries that use the perpendicular force of the current as a source of power. Examples of a current propelled ferry are the four Rhine ferries in Basel, Switzerland. Cable ferries may be used in fast-flowing rivers across short distances. With an ocean crossing of approximately 1900 metres, the cable ferry between Vancouver Island and Denman Island in British Columbia; is the longest one in the world.
Free ferries operate in some parts of the world, such as at Woolwich in London, England (across the River Thames); in Amsterdam, Netherlands (across the IJ waterway); along the Murray River in South Australia, and across many lakes in British Columbia. Many cable ferries operate on lakes and rivers in Canada, among them a cable ferry that charges a toll operates on the Rivière des Prairies between Laval-sur-le-Lac and Île Bizard in Quebec, Canada. In Finland there were 40 road ferries (cable ferries) in 2009, on lakes, rivers and on sea between islands.
Main article: Air ferry
In the 1950s and 1960s, travel on an "air ferry" was possible—airplanes, often ex-military, specially equipped to take a small number of cars in addition to foot passengers. These operated various routes including between the United Kingdom and Continental Europe. Companies operating such services included Channel Air Bridge, Silver City Airways, and Corsair.
The term is also applied to any "ferrying" by air, and is commonly used when referring to airborne military operations.
Ferries often dock at specialized facilities designed to position the boat for loading and unloading, called a ferry slip. If the ferry transports road vehicles or railway carriages there will usually be an adjustable ramp called an apron that is part of the slip. In other cases, the apron ramp will be a part of the ferry itself, acting as a wave guard when elevated and lowered to meet a fixed ramp at the terminus – a road segment that extends partially underwater or meet the ferry slip.
The world's largest ferries are typically those operated in Europe, with different vessels holding the record depending on whether length, gross tonnage or car vehicle capacity is the metric.
On 11 October 1811, inventor John Stevens' ship the Juliana, began operation as the first steam-powered ferry (service was between New York City, and Hoboken, New Jersey).
The Elwell Ferry, a cable ferry in North Carolina, travels a distance of 110 yards (100 m), shore to shore, with a travel time of five minutes.
The sole contender as oldest ferry in continuous operation is the Mersey Ferry from Liverpool to Birkenhead, England. In 1150, the Benedictine Priory at Birkenhead was established. The monks used to charge a small fare to row passengers across the estuary as absolute scousers. In 1330, Edward III granted a charter to the Priory and its successors for ever: "the right of ferry there... for men, horses and goods, with leave to charge reasonable tolls". However, there may have been a short break following the Dissolution of the monasteries after 1536.
The gas turbine powered Luciano Federico L operated by Montevideo-based Buquebus, holds the Guinness World Record for the fastest car ferry in the world, in service between Montevideo, Uruguay and Buenos Aires, Argentina: its maximum speed, achieved in sea trials, was 60.2 knots (111.5 km/h; 69.3 mph). It can carry 450 passengers and 52 cars along the 110-nautical-mile (200 km; 130 mi) route.
The contributions of ferry travel to climate change have received less scrutiny than land and air transport, and vary considerably according to factors like speed and the number of passengers carried. Average carbon dioxide emissions by ferries per passenger-kilometre seem to be 0.12 kg (4.2 oz). However, 18-knot (21 mph; 33 km/h) ferries between Finland and Sweden produce 0.221 kg (7.8 oz) of CO2, with total emissions equalling a CO2 equivalent of 0.223 kg (7.9 oz), while 24–27-knot (28–31 mph; 44–50 km/h) ferries between Finland and Estonia produce 0.396 kg (14.0 oz) of CO2 with total emissions equalling a CO2 equivalent of 0.4 kg (14 oz).
See also: Electric boat
With the price of oil at high levels, and with increasing pressure from consumers for measures to tackle global warming, a number of innovations for energy and the environment were put forward at the Interferry conference in Stockholm. According to the company Solar Sailor, hybrid marine power and solar wing technology are suitable for use with ferries, private yachts and even tankers.
Alternative fuels are becoming more widespread on ferries. The fastest passenger ferry in the world Buquebus, runs on LNG, while Sweden's Stena converted one of its ferries to run on both diesel and methanol in 2015. Both LNG and methanol reduce CO2 emissions considerably and replace costly diesel fuel.
Megawatt-class battery electric ferries operate in Scandinavia, with several more scheduled for operation. As of 2017, the world's biggest purely electric ferry was the MF Tycho Brahe, which operates on the Helsingør–Helsingborg ferry route across the Øresund between Denmark and Sweden. The ferry weights 8414 tonnes, and has an electric storage capacity of more than 4 MWh.
Since 2015, Norwegian ferry company Norled has operated e-ferry Ampere on the Lavik-Opedal connection on the E39 north of Bergen. Further north on the Norwegian west coast, the connection between Anda and Lote will be the world's first route served only by e-ferries. The first of two ships, MF Gloppefjord, was put into service in January 2018, followed by MF Eidsfjord. The owner, Fjord1, has commissioned a further seven battery-powered ferries to be in operation from 2020. A total of 60 battery powered car ferries are expected to be operational in Norway by 2021.
Since 15 August 2019, Ærø Municipality have operated E-ferry Ellen between the southern Danish ports of Fynshav and Søby, on the island of Ærø. The e-ferry is capable of carrying 30 vehicles and 200 passengers and is powered by a battery "with an unprecedented capacity" of 4.3 MWh (5,800 hp⋅h). The vessel can sail up to 22 nautical miles (25 mi; 41 km) between charges – seven times further than previously possible for an e-ferry. It will now need to prove it can provide up to seven return trips per day. The European Union, which supported the project, aims to roll out 100 or more of these ferries by 2030.
A special feature is the Danish Udbyhøj cable ferry in Randers Fjord which has a land-based power supply by means of a retractable submarine cable.
The following notable maritime disasters involved ferries.