1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar

A fresh start on a floating city could be just a few years away

For five years, The Seasteading Institute has been conducting research into the potential for permanent, innovative communities – floating at sea. We are now able to apply this foundation of knowledge and our network towards an actual design, along with additional efforts to determine specific needs and desires of potential customers, and to select a practical location for what could become the world’s first city at sea.



Phase I

The Floating City Project combines principles of both seasteading and startup cities, by seeking to locate a floating city within the territorial waters of an existing nation. Historically, The Seasteading Institute has looked to international waters for the freedom to establish new nations and spur competitive governance from the outside. However, there are several reasons we are now seeking a host nation: a) It is less expensive to engineer a seastead for relatively calm, shallow waters compared with the open ocean outside of territorial waters; b) it will be easier for residents to travel to and from the seastead, as well as to acquire goods and services from existing supply chains; and c) a host nation will provide a place for a floating city within the existing international legal framework, with the associated protections and responsibilities.The following represent our current core focuses, which we anticipate to span no later than the end 2014:


DeltaSync’s Design & Feasibility Concept


DeltaSync completed their preliminary concept in December 2013. In their vision, the city is composed of modular platforms – either 50 x 50 meter squares, or pentagons with 50 meter sides. Squares and pentagons can be connected and arranged in numerous branch like structures. Squares are estimated to cost approximately $15 million each. This is equivalent $393 per square foot of gross space. But since 20% of each platform is reserved for open/green space, the report projects issuable space to cost $504 per square foot ($5425/square meter). Reinforced concrete was chosen as the construction material of choice for its price and durability. Concrete structures would be molded into sturdy hollow boxes, or “caissons”. Modules would support three story buildings. The design takes into account apartments, terraced housing, office space, and hotels. This concept is based on 11 modules, which could host  225-300 full-time residents when combined, with an additional 50 hotel beds. The total projected cost would therefore be approximately $167 million.


  • The Gulf of Fonseca, bordering three Central American nations, was chosen as a test case for the suitability of the design for protected, territorial waters – this location selected was based loosely on the criteria we used for selecting host nations, such as proximity to cities and existing infrastructure, and location within an attractive climate, outside the path of hurricanes. However, site selection for this study should not be interpreted as suggesting that we have an agreement to develop a floating city in the Gulf of Fonseca. In a location like this, DeltaSync reports that the platforms could be completely solar-powered, and that this would in fact be more cost-effective than diesel generation, even including the costs of battery storage and distribution via micro-grid.


  • This concept also assesses a scaleable method of financing a breakwater, which could eventually surround the city and allow it to move out to the open ocean. Mobility of the individual modules is  key from the perspective of guaranteeing autonomy for the city – in the event that the relationship with a particular host nation no longer suits either party, the platforms could detach from their moorings and float to a different location. Modularity and mobility also enable dynamic geography and empower citizens of the city to rearrange into more desirable configurations as the population grows and evolves.
  • While more in-depth engineering research is required, the preliminary analysis suggests that concrete platforms in the 50 x 50 meter dimensions strike the best balance between cost, movability, and stability in the waves of the representative region. Future research includes verifying the findings in DeltaSync’s report and honing the assumptions off of which the design is based.

Phase II

Once we make it to the end of phase I of this comprehensive study, we hope to spin off a collaboration with real estate developers and investors to actualize the resulting plan. We anticipate the opportunity to put down earnest payments for units early in the next phase. Be sure to sign up for our newsletter so you can keep up to date as the project progresses.






Apply >

Recruiting Partners & Volunteers

We are seeking experienced persons in any fields relevant to seasteading as partners and/or volunteers for the Floating City Project. We are especially seeking individuals with a background in real estate development, geopolitics, diplomacy and marketing.


Qualified applicants should email their a resume or description of any relevant experience to info@seasteading.org.