
Seasteading is the creation of permanent dwellings in
international waters
The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed region ...
, so-called seasteads, that are independent of established governments. No structure on the
high seas
The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed regiona ...
has yet been created and recognized as a
sovereign state
A sovereign state is a State (polity), state that has the highest authority over a territory. It is commonly understood that Sovereignty#Sovereignty and independence, a sovereign state is independent. When referring to a specific polity, the ter ...
. Proposed structures have included modified
cruise ship
Cruise ships are large passenger ships used mainly for vacationing. Unlike ocean liners, which are used for transport, cruise ships typically embark on round-trip voyages to various ports of call, where passengers may go on Tourism, tours k ...
s, refitted
oil platform
An oil platform (also called an oil rig, offshore platform, oil production platform, etc.) is a large structure with facilities to extract and process petroleum and natural gas that lie in rock formations beneath the seabed. Many oil platforms w ...
s, and custom-built
floating islands.
Some proponents say seasteads can "provide the means for rapid innovation in voluntary governance and reverse environmental damage to our oceans ... and foster entrepreneurship." Some critics fear seasteads may function primarily as a refuge for the wealthy to
evade taxes or other national legislation.
While seasteading may guarantee some freedom from unwanted rules, the high seas are regulated internationally through bodies of
admiralty law
Maritime law or admiralty law is a body of law that governs nautical issues and private maritime disputes. Admiralty law consists of both domestic law on maritime activities, and conflict of laws, private international law governing the relations ...
and
law of the sea
Law of the sea (or ocean law) is a body of international law governing the rights and duties of State (polity), states in Ocean, maritime environments. It concerns matters such as navigational rights, sea mineral claims, and coastal waters juris ...
.
The term ''seasteading'' is a
blend of ''sea'' and ''
homesteading
Homesteading is a lifestyle of self-sufficiency. It is characterized by subsistence agriculture, home preservation of food, and may also involve the small scale production of textiles, clothing, and craft work for household use or sale. H ...
'', and dates back to the 1960s.
History
Background
Nomadic ocean life has been practiced for millennia by so-called
sea nomad peoples, particularly around
Southeast Asia
Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
.
Historic inspiration for seasteading includes
Venice
Venice ( ; ; , formerly ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 islands that are separated by expanses of open water and by canals; portions of the city are li ...
, which while built
on stilts like similar settlements to its
North
North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography.
Etymology
T ...
,
East
East is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth.
Etymology
As in other languages, the word is formed from the fact that ea ...
or
South
South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both west and east.
Etymology
The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþa ...
, is not only a long-standing maritime settlement, but also center of the historic independent state of the
Republic of Venice
The Republic of Venice, officially the Most Serene Republic of Venice and traditionally known as La Serenissima, was a sovereign state and Maritime republics, maritime republic with its capital in Venice. Founded, according to tradition, in 697 ...
.
Other inspirations include
Tenochtitlan
, also known as Mexico-Tenochtitlan, was a large Mexican in what is now the historic center of Mexico City. The exact date of the founding of the city is unclear, but the date 13 March 1325 was chosen in 1925 to celebrate the 600th annivers ...
, the capital city of the
Aztec Empire
The Aztec Empire, also known as the Triple Alliance (, Help:IPA/Nahuatl, �jéːʃkaːn̥ t͡ɬaʔtoːˈlóːjaːn̥ or the Tenochca Empire, was an alliance of three Nahuas, Nahua altepetl, city-states: , , and . These three city-states rul ...
, founded on an island in
Lake Texcoco with connected artificial islands built around it –
Mexico City
Mexico City is the capital city, capital and List of cities in Mexico, largest city of Mexico, as well as the List of North American cities by population, most populous city in North America. It is one of the most important cultural and finan ...
now entirely covers the lake's basin – and floating communities such as the
Uru people on
Lake Titicaca
Lake Titicaca (; ; ) is a large freshwater lake in the Andes mountains on the border of Bolivia and Peru. It is often called the highest navigable lake in the world. Titicaca is the largest lake in South America, both in terms of the volume of ...
, the
Tanka people
The Boat Dwellers, also known as Shuishangren (; "people living on the water") or Boat People, or the derogatory Tankas, are a sinicised ethnic group in Southern China who traditionally lived on junks in coastal parts of Guangdong, Guangxi, ...
in
Aberdeen, Hong Kong
Aberdeen ( ; Chinese: 香港仔; ) is an area on southwest Hong Kong Island in Hong Kong. Administratively, it is part of the Southern District. While the name "Aberdeen" could be taken in a broad sense to encompass the areas of Aberdeen (tow ...
, and the
Makoko in Lagos, Nigeria.

Recent inspirations include:
* The
Republic of Rose Island, a short-lived micronation on a man-made platform in the Adriatic Sea, 11 kilometres (6.8 mi) off the coast of the province of Rimini, Italy
*
Pirate radio
Pirate radio is a radio station that broadcasts without a valid license, whether an invalid license or no license at all. In some cases, radio stations are considered legal where the signal is transmitted, but illegal where the signals are rec ...
stations anchored in international waters, broadcasting to listeners on shore
* The
Principality of Sealand
The Principality of Sealand () is a micronation on HM Fort Roughs (also known as Roughs Tower), an offshore platform in the North Sea. It is situated on Rough Sands, a sandbar located approximately from the coast of Suffolk and from the c ...
, a
micronation
A micronation is a polity, political entity whose representatives claim that they belong to an independent nation or sovereign state, but which lacks legal recognition by any sovereign state. Micronations are classified separately from list o ...
formed on a decommissioned sea fort near
Suffolk
Suffolk ( ) is a ceremonial county in the East of England and East Anglia. It is bordered by Norfolk to the north, the North Sea to the east, Essex to the south, and Cambridgeshire to the west. Ipswich is the largest settlement and the county ...
,
England
England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...

* Smaller
floating island
A floating island is a mass of floating aquatic plants, mud, and peat ranging in thickness from several centimeters to a few meters. Sometimes referred to as ''tussocks'', ''floatons'', or ''suds'', floating islands are found in many parts of t ...
s in protected waters, such as Richart Sowa's
Spiral Island
* The non-profit
Women on Waves, which operates hospital ships that allow access to abortions for women in countries where abortions are subject to strict laws.
Contemporary advocacy
Many architects and firms have created designs for floating cities, including
Vincent Callebaut,
Paolo Soleri
Paolo Soleri (21 June 1919 – 9 April 2013) was an American architect and urban planner. He established the educational Cosanti Foundation and Arcosanti. Soleri was a lecturer in the College of Architecture at Arizona State University and a Nati ...
and companies such as
Shimizu, Ocean Builders and E. Kevin Schopfer.
Marshall Savage discussed building tethered
artificial island
An artificial island or man-made island is an island that has been Construction, constructed by humans rather than formed through natural processes. Other definitions may suggest that artificial islands are lands with the characteristics of hum ...
s in his 1992 book ''
The Millennial Project: Colonizing the Galaxy in Eight Easy Steps'', with several color plates illustrating his ideas.
A 1998 essay by Wayne Gramlich attracted the attention of
Patri Friedman. The two began working together and posted their first collaborative book online in 2001. Their book explored many aspects of seasteading from waste disposal to
flags of convenience
Flag of convenience (FOC) refers to a business practice whereby a ship's owners register a merchant ship in a ship register of a country other than that of the ship's owners, and the ship flies the civil ensign of that country, called the flag ...
. This collaboration led to the creation of the non-profit The Seasteading Institute (TSI) in 2008.
As an intermediate step, the
Seasteading Institute has promoted cooperation with an existing nation on prototype floating islands with legal semi-autonomy within the nation's protected territorial waters. On 13 January 2017, the Seasteading Institute signed a memorandum of understanding (MOU) with
French Polynesia
French Polynesia ( ; ; ) is an overseas collectivity of France and its sole #Governance, overseas country. It comprises 121 geographically dispersed islands and atolls stretching over more than in the Pacific Ocean, South Pacific Ocean. The t ...
to create the first semi-autonomous "seazone" for a prototype,
[
] but later that year political changes driven by the French Polynesia presidential election led to the indefinite postponement of the project. French Polynesia formally backed out of the project and permanently cut ties with Seasteading on 14 March 2018.
The first single-family seastead was launched near
Phuket, Thailand by Ocean Builders in March 2019. Two months later, the Thai Navy claimed the seastead was a threat to Thai sovereignty. In 2019, Ocean Builders said it will be building again in Panama, with the support of government officials. As of 2022, the project's status is uncertain.
In April 2019, the concept of
floating cities as a way to cope with rising oceans was included in a presentation by the United Nations program UN-Habitat. As presented, they would be limited to sheltered waters.
Specific proposals
The Seasteading Institute

A nonprofit organization that has held several seasteading conferences and started The Floating City Project, which is proposed to locate a floating city within the territorial waters of an existing nation. Attempts to reach an agreement with French Polynesia ended in 2018.
Jounieh Floating Island project (JFIP)
A proposal to build a "floating island" with a luxury hotel in
Jounieh north of the Lebanese capital
Beirut
Beirut ( ; ) is the Capital city, capital and largest city of Lebanon. , Greater Beirut has a population of 2.5 million, just under half of Lebanon's population, which makes it the List of largest cities in the Levant region by populatio ...
, was stalled as of 2015 because of concerns from local officials about environmental and regulatory matters.
Blueseed
Blueseed was a company aiming to float a ship near
Silicon Valley
Silicon Valley is a region in Northern California that is a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical area of the Santa Clara Valley ...
to serve as a visa-free
startup
A startup or start-up is a company or project undertaken by an entrepreneur to seek, develop, and validate a scalable business model. While entrepreneurship includes all new businesses including self-employment and businesses that do not intend to ...
community and entrepreneurial
incubator. Blueseed founders
Max Marty and
Dario Mutabdzija met when both were employees of The Seasteading Institute. The project planned to offer living and office space, high-speed Internet connectivity, and regular ferry service to the mainland
but as of 2014 the project was "on hold", and was later described as "failed" due to lack of investors and possible trouble with the
Startup Visa Bill before the US Congress, which would make the concept obsolete.
Satoshi
A project which got as far as the purchase of a ship was
MS ''Satoshi'', purchased (as ''Pacific Dawn'') in 2020 by Ocean Builders Central, to become a floating residence in the
Gulf of Panama; however, after failing to obtain insurance for the proposed operation, the ship was resold in 2021 for cruise operations.
[
]
Dogen City
A Japanese consoriuim called N-Ark has a proposal to build a floating "healthcare city" to fit 10,000 people, with hopes to start construction by 2030.
Types
Cruise ships
Cruise ship
Cruise ships are large passenger ships used mainly for vacationing. Unlike ocean liners, which are used for transport, cruise ships typically embark on round-trip voyages to various ports of call, where passengers may go on Tourism, tours k ...
s are a proven technology, and address most of the challenges of living at sea for extended periods of time. However, they're typically optimized for travel and short-term stay, not for permanent residence in a single location.
Many proposals have been made for seasteading retrofits of cruise ships, although none have succeeded. Examples include:
* MS '' Satoshi''
* Blue Seed retro-fitted cruise ship.
* Freedom Ship
Spar platform
Platform designs based on spar buoys, similar to oil platforms.[
] In this design, the platforms rest on spars in the shape of floating dumbbells, with the living area high above sea level. Building on spars in this fashion reduces the influence of wave action on the structure.
Proposals include:
* TSI Clubstead[
]
* Evolo retrofitted oil platform
* SeaPod
Modular island
There are numerous seastead designs based around interlocking modules made of reinforced concrete
Reinforced concrete, also called ferroconcrete or ferro-concrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ...
. Reinforced concrete is used for floating docks, oil platforms, dams, and other marine structures.
Proposals include:
* The Floating City Project / Blue Frontiers.
* Evolo Oceanscraper.
* AT Design Office floating city concept.
* Freedom Haven
Monolithic island
A single, monolithic structure that is not intended to be expanded or connected to other modules.
Proposals include:
* Evolo Seascraper
* SeaOrbiter proposed oceangoing research vessel.
Criticism
Seasteading has been identified as "techno-colonialism", continuing settler colonialism
Settler colonialism is a logic and structure of displacement by Settler, settlers, using colonial rule, over an environment for replacing it and its indigenous peoples with settlements and the society of the settlers.
Settler colonialism is ...
at sea. Others argue that building a new government is much more difficult than advocates realize. Also, seasteads would be at risk of political interference from nation states.
On a logistical level, without access to culture, travel, restaurants, shopping, and other amenities, seasteads could be too remote and too uncomfortable to be attractive to potential long-term residents. Building seasteads to withstand the rigors of the open ocean may prove uneconomical.
Seastead structures may blight ocean views, their industry or farming may deplete their environments, and their waste may pollute surrounding waters. Some critics believe that seasteads will exploit both residents and the nearby population. Others fear that seasteads will mainly allow wealthy individuals to escape taxes, or to harm mainstream society by ignoring other financial, environmental, and labor regulations.
Governments have become increasingly concerned that Seasteading poses a threat to national security and opens the door for individuals or groups to create independent states. One such case made international headlines in 2019, when Thai officials seized a seastead 14 miles off the coast of Phuket citing national security concerns.
In popular culture
Seasteading has been imagined many times in novels, including: Jules Verne
Jules Gabriel Verne (;''Longman Pronunciation Dictionary''. ; 8 February 1828 – 24 March 1905) was a French novelist, poet and playwright.
His collaboration with the publisher Pierre-Jules Hetzel led to the creation of the ''Voyages extraor ...
's 1895 science-fiction book '' Propeller Island'' (''L'Île à hélice'') about an artificial island designed to travel the waters of the Pacific Ocean; Freezone, a seventeen square mile platform similar to Las Vegas positioned 100 miles north of Morocco in the '' Eclipse Trilogy'' of the 1980s, and the 2003 novel '' The Scar'', which featured a floating city named Armada.
It has been a central concept in some movies, notably ''Waterworld
''WaterWorld'', also known as ''WaterWorld: A Live Sea War Spectacular'', is a stunt show attraction based on the 1995 film '' Waterworld'' found at Universal Studios Hollywood (1995), Universal Studios Japan (2001), Universal Studios Singap ...
'' (1995), and in TV series such as ''Stargate Atlantis
''Stargate Atlantis'' (usually stylized in all caps and often abbreviated ''SGA'') is an Adventure film, adventure and military science fiction television series and part of MGM's Stargate, ''Stargate'' franchise. The show was created by Brad W ...
'', which had a complete floating city. A two-episode sequence of the show ''Silicon Valley
Silicon Valley is a region in Northern California that is a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical area of the Santa Clara Valley ...
'' featured a seastead positioned at the ''International Date Line
The International Date Line (IDL) is the line extending between the South and North Poles that is the boundary between one calendar day and the next. It passes through the Pacific Ocean, roughly following the 180.0° line of longitude and de ...
''.
It is a common setting in video games, forming the premise of the ''Bioshock
''BioShock'' is a 2007 first-person shooter video game developed by 2K Boston (later Irrational Games) and 2K Australia, and published by 2K. The first game in the ''BioShock'' series, it was released for Microsoft Windows and Xbox 360 ...
'' series, '' Brink'', and '' Call of Duty: Black Ops II''; and in anime, such as '' Gargantia on the Verdurous Planet'' which takes place mainly on a traveling city made of an interconnected fleet of ocean ships.
A satirical take on seasteading in the context of human extinction is depicted in the Love, Death & Robots episode "Three Robots: Exit Strategies". In the '' Archer'' episode "Cold Fusion", a villain attempts to melt the polar ice caps to promote his floating city development company.
See also
* Floating airport
* Floating island
A floating island is a mass of floating aquatic plants, mud, and peat ranging in thickness from several centimeters to a few meters. Sometimes referred to as ''tussocks'', ''floatons'', or ''suds'', floating islands are found in many parts of t ...
* Intentional community
An intentional community is a voluntary residential community designed to foster a high degree of group cohesiveness, social cohesion and teamwork. Such communities typically promote shared values or beliefs, or pursue a common vision, wh ...
* HavenCo
HavenCo Limited was a data haven, data hosting services company, founded in 2000 to operate from Sealand, a unrecognised self-declared principality that occupies HM Fort Roughs off the coast of England.
In November 2008, operations of Haven ...
* Houseboat
A houseboat is a boat that has been designed or modified to be used primarily for regular dwelling. Most houseboats are not motorized, as they are usually moored or kept stationary, fixed at a Berth (moorings), berth, and often tethered to ...
* Mobile offshore base
Mobile offshore base (MOB), sometimes called a joint mobile offshore base (JMOB), is a concept for supporting military operations beyond the home shores, where conventional land bases are not available, by deploying on the high seas or in coastal ...
* Ocean colonization
* Operation Atlantis
* Pneumatic stabilized platform
* Russian floating nuclear power station
* Underwater habitat
Underwater habitats are underwater structures in which people can live for extended periods and carry out most of the Circadian rhythm, basic human functions of a 24-hour day, such as working, resting, eating, attending to personal hygiene, and ...
* Very large floating structure
Very large floating structures (VLFSs) or very large floating platforms (VLFPs) are artificial islands, which may be constructed to create floating airports, bridges, breakwaters, piers and docks, storage facilities (for oil and natural gas), ...
* Wolf Hilbertz
References
Further reading
*
*
{{emerging technologies, topics=yes, architect=yes
Artificial islands
Floating islands
Steading
1960s neologisms