
Seasteading is the concept of creating permanent dwellings at sea, called seasteads, 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 ...
outside the territory claimed by any government.
No one has yet created a 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 region ...
that has been recognized as a
sovereign state
A sovereign state or sovereign country, is a polity, political entity represented by one central government that has supreme legitimate authority over territory. International law defines sovereign states as having a permanent population, defin ...
. 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 know ...
s, refitted
oil platforms, and custom-built
floating islands
A floating island is a mass of floating aquatic plants, mud, and peat ranging in thickness from several centimeters to a few meters. Floating islands are a common natural phenomenon that are found in many parts of the world. They exist less co ...
.
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 more as a refuge for the wealthy to
avoid taxes or other obligations.
While seasteading gives an impression of freedom from unwanted rules and regulations, the high seas are "some of the most tightly regulated places on Earth" despite appearing borderless and free; in particular the cruise ship industry is highly regulated.
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. Pur ...
'', and dates back to the 1960s.
History
Many architects and firms have created designs for floating cities, including
Vincent Callebaut
Vincent Callebaut (born May 27, 1977) is a Belgian ecological architect. He designs futuristic-like ecodistrict projects which take account of several aspects of sustainability ( renewable energies, biodiversity, and urban agriculture).
Biograp ...
,
Paolo Soleri
Paolo Soleri (21 June 1919 – 9 April 2013) was an Italian-born American architect. He established the educational Cosanti Foundation and Arcosanti. Soleri was a lecturer in the College of Architecture at Arizona State University and a Nationa ...
and companies such as
Shimizu, Ocean Builders and E. Kevin Schopfer.
For a dozen years
L. Ron Hubbard, founder of the
Church of Scientology
The Church of Scientology is a group of interconnected corporate entities and other organizations devoted to the practice, administration and dissemination of Scientology, which is variously defined as a cult, a business, or a new religious ...
, and his executive leadership became a maritime-based community named the Sea Organization (
Sea Org). Beginning in 1967 with a complement of four ships, the Sea Org spent most of its existence on the high seas, visiting ports around the world for refueling and resupply. In 1975 much of these operations were shifted to land-based locations.
Marshall Savage discussed building tethered
artificial island
An artificial island is an island that has been constructed by people rather than formed by natural means. Artificial islands may vary in size from small islets reclaimed solely to support a single pillar of a building or structure to those tha ...
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
Patri Friedman (born July 29, 1976) is an American libertarian, neoreactionary,
anarcho-capitalist, and theorist of political economy. He founded The Seasteading Institute, a non-profit that explores the creation of sovereign ocean colonies.
...
. 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. 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
)Territorial motto: ( en, "Great Tahiti of the Golden Haze")
, anthem =
, song_type = Regional anthem
, song = "Ia Ora 'O Tahiti Nui"
, image_map = French Polynesia on the globe (French Polynesia centered).svg
, map_alt = Location of French ...
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
Jounieh ( ar, جونيه, or ''Juniya'', ) is a coastal city in Keserwan District, about north of Beirut, Lebanon. Since 2017, it has been the capital of Keserwan-Jbeil Governorate. Jounieh is known for its seaside resorts and bustling night ...
north of the Lebanese capital
Beirut
Beirut, french: Beyrouth is the capital and largest city of Lebanon. , Greater Beirut has a population of 2.5 million, which makes it the third-largest city in the Levant region. The city is situated on a peninsula at the midpoint o ...
, 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 serves as 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 areas San Mateo Count ...
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 refers to all new businesses, including self-employment and businesses that never intend t ...
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
The Gulf of Panama ( es, Golfo de Panamá) is a gulf of the Pacific Ocean off the southern coast of Panama, where most of eastern Panama's southern shores adjoin it. The Gulf has a maximum width of , a maximum depth of and the size of . The Pan ...
; however, after failing to obtain insurance for the proposed operation, the ship was resold in 2021 for cruise operations.
[
]
Designs
Historical predecessors and inspirations for seasteading include:
* Oil platforms.
* The Principality of Sealand, a micronation
A micronation is a political entity whose members claim that they belong to an independent nation or sovereign state, but which lacks legal recognition by world governments or major international organizations. Micronations are classified s ...
formed on a decommissioned sea fort near Suffolk
Suffolk () is a ceremonial county of England in East Anglia. It borders Norfolk to the north, Cambridgeshire to the west and Essex to the south; the North Sea lies to the east. The county town is Ipswich; other important towns include L ...
, England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...
.
* Smaller floating islands in protected waters, such as Richart Sowa's Spiral Island
* Floating communities, such as the Uru people on Lake Titicaca
Lake Titicaca (; es, Lago Titicaca ; qu, Titiqaqa Qucha) 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. By volume of water and by surface area ...
, the Tanka people
The Tankas or boat people are a sinicised ethnic group in Southern China who have traditionally lived on junks in coastal parts of Guangdong, Guangxi, Fujian, Hainan, Shanghai, Zhejiang and along the Yangtze river, as well as Hong Kon ...
in Aberdeen, Hong Kong
Aberdeen () is an area on southwest Hong Kong Island in Hong Kong. Administratively, it is part of the Southern District, Hong Kong, Southern District. While the name "Aberdeen" could be taken in a broad sense to encompass the areas of Aberdeen ...
, and the Makoko in Lagos, Nigeria.
* The non-profit Women on Waves
Women on Waves (WoW) is a Dutch nongovernmental organization ( NGO) created in 1999 by Dutch physician Rebecca Gomperts, in order to bring reproductive health services, particularly non-surgical abortion services and education, to women in c ...
, which operates hospital ships that allow access to abortions for women in countries where abortions are subject to strict laws
* The Republic of Rose Island
The Republic of Rose Island ( eo, Respubliko de la Insulo de la Rozoj; it, Repubblica dell'Isola delle Rose) was a short-lived micronation on a man-made platform in the Adriatic Sea, off the coast of the province of Rimini, Italy.
It was ...
, 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 or a pirate radio station is a radio station that broadcasts without a valid license.
In some cases, radio stations are considered legal where the signal is transmitted, but illegal where the signals are received—especially ...
stations anchored in international waters, broadcasting to listeners on shore.
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 know ...
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.
Examples:
* 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.
Examples:
* TSI Clubstead[
]
* Evolo retrofitted oil platform
* SeaPod
Modular island
There are numerous seastead designs based around interlocking modules made of reinforced concrete. Reinforced concrete is used for floating docks, oil platforms, dams, and other marine structures.
Examples:
* 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.
Examples:
* Evolo Seascraper
* SeaOrbiter
The SeaOrbiter, also known as Sea Orbiter (two words), is a proposed oceangoing research vessel. Construction was due to start in 2014 but by May 2015, only the Eye of ''SeaOrbiter'' has been completed, and as of early 2021, there is no news of ...
proposed oceangoing research vessel.
Criticism
Criticisms have been leveled at both the practicality and desirability of seasteading.
Critics believe that founding and building a government is difficult. Also, seasteads would still 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.
In popular culture
Seasteading has been imagined many times in novels, from 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 extraord ...
's 1895 science-fiction book '' Propeller Island'' (''L'Île à hélice'') about an artificial island designed to travel the waters of the Pacific Ocean, to the 2003 novel '' The Scar'', which featured a floating city named Armada
Armada is the Spanish and Portuguese word for naval fleet, which also adopted into English, Malay and Indonesian for the same meaning, or an adjective meaning 'armed'; Armáda () is the Czech and Slovak word for armed forces.
Armada may also refe ...
. It has been a central concept in some movies, notably ''Waterworld
''Waterworld'' is a 1995 American post-apocalyptic action film directed by Kevin Reynolds and co-written by Peter Rader and David Twohy. It was based on Rader's original 1986 screenplay and stars Kevin Costner, who also produced it with Ch ...
'' (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 Wr ...
'', which had a complete floating city. It is a common setting in video games, forming the premise of the ''Bioshock
''BioShock'' is a 2007 first-person shooter game developed by 2K Boston (later Irrational Games) and 2K Australia, and published by 2K Games. The first game in the ''BioShock'' series, it was released for Microsoft Windows and Xbox 360 pla ...
'' series, '' Brink'', and '' Call of Duty: Black Ops II''; and in anime, such as ''Gargantia on the Verdurous Planet
is a Japanese anime television series produced by Production I.G and directed by Kazuya Murata, and aired between April and June 2013. A manga adaptation began serialization in Kadokawa Shoten's ''Newtype Ace'' magazine in January 2013.
...
'' which takes place mainly on a traveling city made of an interconnected fleet of ocean ships.
See also
* Floating airport
A floating airport is an airport built and situated on a very large floating structure (VLFS) located many miles out at sea utilizing a flotation type of device or devices such as pneumatic stabilized platform (PSP) technology.
As the popula ...
* Freedom Ship
* Intentional community
An intentional community is a voluntary residential community which is designed to have a high degree of group cohesiveness, social cohesion and teamwork from the start. The members of an intentional community typically hold a common social, po ...
* HavenCo
* Mobile offshore base
* 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 basic human functions of a 24-hour day, such as working, resting, eating, attending to personal hygiene, and sleeping. In thi ...
* Very large floating structure
* Wolf Hilbertz
References
Further reading
*
*
{{emerging technologies, topics=yes, architect=yes
Artificial islands
Emerging technologies
Floating islands
Steading