The full potential of seasteading will only be realized in international waters. Finding suitable high seas locations are therefore essential to our long-term goals. The specific requirement of an open-ocean seastead will depend on business and design factors. The most relevant distinctions in terms of location are (1) ship/barge versus spar/semi-submersible designs; and (2) dynamically positioned versus moored seasteads. Ship and barge designs use displacement hulls, which provide cheap and mobile marine real estate but are sensitive to waves. Spars and semi-submersibles are are less mobile and more stable - which is ideal for seasteading - but are expensive given current technology. Dynamic positioning involves the use of powered movement to maintain location whereas mooring involves temporary anchoring to the sea floor.
There are some general criteria important to all high seastead scenarios:
Outside any country's EEZ (Critical)
As close as possible to civilization, subject the the criterion above - A short plane flight from first-world major airport (roughly 200-500 miles) would be desirable (Critical)
Close to rich customers (Important)
Close to cheap labor (Important)
We separate the High Seastead scenario into three sub-scenarios, each of which has specific requirements:
Our long term ambitions of political independence require suitable seastead locations in the high seas (outside of EEZs). Increasing political desirability by moving further from existing states, of course, will have costs in terms of economic and oceanographic conditions. Proximity to civilization remains important, however. Since high seasteads will likely be larger than those within EEZs, the economies of scale required to make plane travel feasible may be present. Being a short plane flight (roughly 200-500 miles) from major international airport will therefore be essential, while similar proximity to both rich customers and cheap labor will also be important.
Seasteading in international waters could, and likely will, proceed in a number of ways. We therefore separate the High Seastead scenario into three sub-scenarios.
| Criterion | Notes |
| Low
maximum wave height | Waves are the biggest
physical hazard to seasteads. Since
tsunamis only become destructive once they reach shore, they pose no
threat to seasteads. Rogue waves and severe storms, however, are a
dangerous and costly to protect against. Design and seasonal migration will enable seasteads to survive large waves, but both options will be costly. The best option is to exist in waters as calm as possible in order to reduce the cost of protection from worst-case waves. Mediterranean Seas, the equatorial doldrums, and sheltered areas leeward of land would perform well under this criterion. The ClubStead metocean report indicated a 100-year storm Hs=8.3m. Miguel Lamas's research, outlined in the draft of his PhD thesis, suggests that locations in international waters much calmer than this will be rare. The importance of low maximum wave height is high in any seasteading scenario but does depend to some extent on the design concept used. Large waves are particularly hazardous to ship-like concepts. Since Poseidon will likely be shaped like a ship, this criterion is of vital importance in this scenario. The Clubstead metocean and hydroscatic and hydrodynamic analyses include relevant data for a specific location 100 miles off the coast of San Diego and should be used as a reference for investigation in other locations. These reports considered the probable maximum wave height for 1-year, 10-year, and 100-year storms. The performance of a ship-shaped vessel is considered under normal and extreme sea states as a comparison with Clubstead. Further reading: ClubStead Metocean; ClubStead Hydro; Engineering Report; Lamas PhD; Book Beta: "Waves" |
|
Low average wave height | Even in the absence of dangerously large waves, calm seas
are a big advantage in terms of comfort and ease of relative
positioning. We can expect a large degree of overlap between areas with
low maximum and low average wave height, with the doldrums,
mediterranean seas, and sheltered areas leeward of land being more
calm. The fact that Poseidon's business will be based to a large extent on tourism, as well as its ship-like shape, makes this criterion very important. The Clubstead metocean and hydroscatic and hydrodynamic analyses include relevant data for a specific location 100 miles off the coast of San Diego and should be used as a reference for investigation in other locations. The Clubstead analysis characterized comfort by the standard deviation of the vertical acceleration, according to International Standard ISO 2631. The standard states that, at typical wave peak frequencies, a majority of the passengers is seasick after being exposed to a vertical acceleration RMS of 0.25m/s2 for 8 consecutive hours. The performance of a ship-shaped vessel is considered under normal and extreme sea states as a comparison with Clubstead. As pointed out in the Clubstead report, however, the ship vessel assumed is not optimaized for long-term comfort. Passenger-comfort data from cruise ships in various sea states will likely produce better estimates of acceptable wave height. Further reading: ClubStead Metocean; ClubStead Hydro; Engineering Report; Lamas PhD; Book Beta: "Waves" |
|
Unidirectional waves | Some
concepts require unidirectional waves. Some designs depend on their
orientation towards the waves for operation. Elongated shapes such as
ships and barges are sensitive in their operation to the spread of wave
directionality. Cross-seas, with waves generated in two different wind
systems, are particularly hazardous to ships. Again, the shape of Poseidon makes wave directionality important. Fortunately, unidirectional waves are more common closer to land, which is where Poseidon will be. The Clubstead metocean analysis indicates a 100deg angle between predominant swell and wind directions. Information of the magnitude of wave and swell components individually would be useful; perhaps one of the components is significantly smaller. Closer to land, such as in the gulf of Finland, unidirectionality is expected. Perhaps this occurs frequenty in other EEZ locations too. |
| Low current | Some
concepts, most notably spars, are very sensitive to current strength.
Remaining stationary against a strong current absent mooring will result
in significant fuel use. Publically available data does not give a very good indication of what to expect. The data found is either instantaneous or very long-term average, neither of which carry enough information. Having a time-series for a single location would be most informative. Identifying locations with a minimum RMS current and obtaining an impression of what can reasonably be expected would be highly useful. This criterion is of high priority for the High Seastead scenario, the likely structures of which are more prone to producing significant drag. Current strength is of much less concern for Poseidon, which is shaped like a ship. Further Reading: ClubStead Metocean; Engineering Report; Lamas PhD; Book Beta: "Currents"; Engineering Blog: Estimation of DP Power requirements |
| Pleasant
Climate | Since people will be living on
seasteads, air temperature and weather will ideally be pleasant. This
becomes critical for tourism-based seasteading businesses, such as
Poseidon. While we can heat indoor areas, tourists will want to spend
time outdoors. A warm location without strong wind or rain would
therefore be ideal. Further Reading: Commission on Climate, Tourism, and Recreation |
| No
ice | Moving ice makes mooring very difficult and must
therefore be avoided in some scenarios. Ice will also likely complicate
docking and dynamic positioning. |
| Low maximum wind | While wind does
not present a significant danger to the integrity of seasteads
independently of its effect on waves, severe wind will make for a less
pleasant environment. It will also reduce mobility and the ability to
maintain relative position in the absence of anchors. Another issue is
salt spray, which will make outdoor gardening problematic. Particularly
strong winds are also likely to damage many types of wind turbine, which
would disrupt power generation. Deploying more resilient turbines would
increase costs. Further Reading: ClubStead Metocean; Book Beta: "Wind" |
| Steady winds | Areas in which trade winds
are constantly blowing make for easier power generation. Wind energy
rises as the cube of wind velocity, so a steadier wind at the same
average velocity provides significantly less energy than a variable
wind. However, there are big benefits to consistent winds, such as
reduced dependence on costly storage systems. Occasional strong winds
are likely to damage standard wind turbines, disrupting power
production. Further, variable winds strong enough to provide for a
seastead's power needs are also likely to make outdoor areas an
unpleasant place to be. Further Reading: ClubStead Metocean; Book Beta: "Wind", "Power" |
| Low variability in wind directionality | Areas with a consistent prevailing wind will make cheaper
unidirectional wind turbines practical. Further Reading:ClubStead Metocean; Book Beta: "Wind" |
| Low relative salinity | Water
desalination through the reverse osmosis method is more efficient with
water of lower salinity. Since this will make only a modest cost
difference to a relatively small part of a seastead's operating costs,
this criterion is of low priority. Further Reading: Book Beta: "Water" |
| Access to seafloor resources | While
most seafloor resources will be unattainable except at very large
scales, there may be some resources of which seasteaders can make use in
the long term. This criterion is, however, of very low priority at the
moment. In addition to scale, there are a number of reasons to ignore
seafloor resources when making location decisions: resource extraction
might make an otherwise nice location an unpleasant place to live, there
are serious legal limitations to resource extraction up to 350nm from
shore, and other location factors are likely to hugely outweigh any
small opportunity seafloor resources might provide. Further Reading: TSI Forum: Materials and Resources; UNCLOS Annex III: Basic Conditions of Prospecting, Exploration and Exploitation |
| Shallow | The ability to
anchor seasteads and/or breakwaters is desirable. 100-150m or less
would be ideal, though mooring is possible at reasonable cost in water
as deep as 2km. Water shallow enough for cheap mooring is particularly desirable
in areas with a strong current and for design concepts with high drag,
since these factors make dynamic positioning more costly. Shallow water is more common close to land, but there are several seamounts in seemingly desirable locations further from shore. Further Reading: Engineering Report; Book Beta: "Transportation"; Main Blog: Fun with Google Earth; Engineering Blog: Ampere Seamount; Lamas PhD |
| Marine life | Plentiful
fish as a food source would be desirable, though fishing is heavily
regulated within EEZs and seasteads are not capable of moving fast
enough to move to where the fish are at any given time. Small seasteads
may find non-commercial fishing an important part of its food supply. Interesting marine life would also make for a more pleasant environment for residents and visitors. This will be especially beneficial for tourism-based operations. Natural upwelling zones, which constitute only about 1% of the oceans surface, produce approximately half of the worlds fish. Further Reading: Census of Marine Life |
| Criterion | Notes |
| Close
to first world | To
be economically feasible, the seastead needs to be close enough to a
rich country, and preferably a large city, to allow us to sell goods or
services. Ideally, this country would have a high cost of government in
specific areas in which seasteads can compete. Highly regulated or
poor-quality public healthcare, for example, could make medical tourism
viable. Being close to developed countries is also important in attracting residents initially. Moving to Poseidon will be a much more daunting proposition if the cost, in terms of both time and money, of visiting civilization is high. Further Reading: Book Beta: "Business Models" |
| Close to country with cheap labor | A successful commercial operation at sea will need to hire
labour as well as sell services. Proximity to low-income countries with
cheap labor is therefore very desirable. An ideal source of labor would
be countries with relatively high levels of human capital, but depressed
incomes due to labor market regulation or other harmful government
policy. Immigration policies in neighboring states are also a relevant consideration, since easy migration to a high-income country decreases the relative attraction of a seastead to low-income workers. Ease of migration will be reflected in labor market conditions, but the difficulty of measurement as well as the possibility of political shocks to ease of migration make this a relevant consideration. The desirability of being close to both high-income and low-income countries makes places like the Mediterranean (close to both Europe and Africa) and the Baltic (close to both rich Northern European and poor former-Soviet countries), and Caribbean (close to United states and poor Caribbean countries) seas seem very attractive. Being close to the border of rich and poor countries, such as the United States and Mexico, might also be desirable, especially if immigration to the rich country is difficult. Further Reading: Book Beta: "Business Models" |
| Close to many countries | The
two criteria above are a single example of the more general principle
of arbitrage. Given that various government policies distort relative
prices, a seastead which can buy goods, whether for consumption by
residents or as inputs to the services sold to outsiders, from multiple
markets will be at a cost advantage. The greater the differences in
prices, the better. The Mediterranean will allow us to get close to multiple countries. Unfortunately for us, prices will be relatively constant across countries due to the homogenizing effect of the EU. |
| Access to data connection | Access to the internet is crucial both economically and to
reduce the social isolation of residents. While satellite can provide access almost anywhere, these services are currently laggy and expensive. Satellite technology is improving rapidly, however, and could become a much better option by the time seasteads become a reality. Seasteads which are close to land can use point-to-point links
of various kinds, such as microwaves. While there are some minor
issues, it will be much cheaper to get significant bandwidth, and have
much less lag, than satellites. This is another advantage of being close
to civilization. Laying cable is incredibly expensive and unlikely to be feasible for quite awhile. However, there is already cable laid to connect many island nations. It might be possible for a seastead to anchor over a junction and connect there. Further Reading: Book Beta: "Business Models"; TSI Forum: Internet. |
| On major shipping lane |
Being
on major shipping lanes may be desirable for seasteading communities
large enough to justify having ships stop. For smaller seasteads, being
on shipping lanes might be harmful, due to the increased danger of
collision with ships and higher waves generated by boat wakes. |
| Criterion | Notes |
| Outside
territorial waters of any country | A seastead
within the territorial waters (normally 12 nautical miles from the
coast) of a country will have no political autonomy, since states have
almost as much power within territorial waters as they do on land. While
seasteads within territorial waters, such as Baystead, may be important
first step in developing the technology, physically and economically
suitable locations within territorial waters will be easy to find. Further reading: Book Beta: "Political Situation"; TSI Law of the Sea Research |
| Outside contiguous zone of any country | The power of states
extends beyond their territorial waters. Within 24 nautical miles of
land, states have special powers to punish or prevent violations of
their domestic laws. Harassment by coastguards searching for evidence of
drug trafficking or other offences is possible in this area, even for
flagged vessels. Being outside the CZ is politically preferable but also takes us farther from land, thereby increasing distance from population centers and calm seas. The extent to which existence in the CZ will be a problem depends on how active the state in question is in patrolling its CZ. Some countries are likely to ignore us; others may use CZ rights as a pretext to make existence all but impossible. Further reading: Book Beta: "Political Situation"; TSI Law of the Sea Research |
| Outside EEZ of any country (High Seas). | Being inside an EEZ means that the coastal state regulates
fixed installations and all resource use (fishing, wave energy, solar
energy...), which is undesirable for large, long-term seasteading
ventures. Escaping EEZs requires being at least 200nm from land, which
is a prohibitive distance for passenger travel by normal ferry, so
seasteading outside EEZs will require either a large enough community
for a floating runway, an alternate transportation solution
(gyrocopters, open ocean seaplanes, something like that - there are
several possibilities but most likely none will work). The High Seas are not an option for Poseidon, as it is a small community which needs to be within ferry distance of a port, but finding suitable locations further at sea is important for the longer term. True, sustainable autonomy enabling a full range of economic activities is not possible within another state's EEZ. Further reading: Book Beta: "Political Situation"; TSI Law of the Sea Research |
| Far from major military powers | Jurisdictions likely to flex their military muscle, such as
the United States and China, should be avoided if possible,
particularly if it is the only military power in the area. Further reading: Book Beta: "Political Situation" |
| Inside EEZ/CZ of country which have shown an
unwillingness or inability to enforce its claims | Being within the EEZ or CZ of a country which doesn't
enforce its rights could be highly desirable. While seasteads in such a
location would lack full de jure autonomy, they would enjoy a
high level of de facto autonomy and protection from interference
from other states. Being within an EEZ would also mean being closer to
customers and/or labor markets. This seems like the ideal situation for
Poseidon. Piracy off the coast of Somalia, while obviously a bad thing, is an interesting parallel to the freedom that EEZs/CZs without an active government provides. Piracy is easy within Somali territorial waters, since the area is under an unenforced claim. Under maritime law, states have extremely broad powers to combat piracy, but, by definition, piracy cannot happen in territorial waters. This means that pirates can act wit h impunity within 12nm of the Somali coast. There is no functional government in Somalia to prevent piracy, and other countries have no legal rights to punish pirates within another's territorial waters. We can benefit from a similar combination of protection and neglect, though with much better outcomes for the world at large. Further reading: Book Beta: "Political Situation"; GlobalSecurity.org: Pirates. |
| Close to many jurisdictions | Multiple
jurisdictions increase the ease of exit should a nearby state turn
nasty. This is especially important if we are inside the EEZ of some
country. The worst possible location would be within the EEZ of some
country and far from any other country. The other jurisdictions should
ideally contain locations meeting the physical, economic, and political
criteria described in this document. If a seastead needs to make deals with a country to exist in its EEZ, having multiple options will improve the seastead's bargaining position. Being close to multiple countries with different levels of price distortion will also have economic advantages in terms of arbitrage opportunities. Further reading: Book Beta: "Political Situation" |
| Absence of pirates | While
there is likely a niche market for floating pirate hangouts, most
businesses will want to avoid areas with high levels of piracy. As
discussed in the Seasteading FAQ, piracy is unlikely to be a serious
threat. Further Reading: Book Beta: "Pirates will get you!"; GlobalSecurity.org: Pirates. |