This document discusses Float Inc.'s Pneumatically Stabilized Platform (PSP) technology for use as a deep ocean offshore floating platform. The PSP technology was validated through testing by the Defense Advanced Research Projects Agency and Office of Naval Research in the 1990s and 1990s. The PSP uses air buoyancy within cylinders to stabilize the platform and reduce wave motion by 50-94%, even with 20 meter incident waves. The modular PSP design allows for extension and reconfiguration. Float Inc. proposes an Offshore Ocean Energy System placed on a PSP that would incorporate offshore wind, wave, and current energy generation as well as potential energy storage and other applications like aquaculture. Preliminary estimates for a site off

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Float Inc. PSP Primary Design as a
Deep Ocean Offshore Floating Platform
 Defense Advanced Research Project
Agency (DARPA)
 Confirmation of PSP technology
(1995 – 1996)
 Office of Naval Research (ONR)
 Validation of PSP technology
characteristics (1997 – 1998)
 Float Incorporated Pneumatically
Stabilized Platform (PSP) technology
chosen for inclusion in a national R&D
program U.S.A. - Department of
Defense “Mobile Offshore Base
Program”

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Float Inc. PSP Technology
Characteristics Validated & Confirmed
 Stable with Variable Deck Loads Capabilities
 At-sea motion stability and structural loads mitigation by
decoupling the “hull” from ocean wave pressures through the
use of air buoyancy, which is both compressible and mobile
within the PSP platform cylinders.
 Wave attenuation
 Tank testing incident wave Heights up to 20meters
 Range of transmitted wave reduction = 50% to 94%
 Modular
 PSP cylinders assembled into modules (25 cylinders)
 Modules assembled into PSP platform configuration
 Modules assembly can be accomplished in Sea State 3 levels

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Float Inc. PSP Technology
Characteristics Validated & Confirmed
 Monolithic platform
 Modular construction and assembly
 Extensible
 PSP modular construction permits extension of existing PSP
without interruption of existing activities onboard
 Mobile
 PSP can be repositioned to a different area/zone as the PSP is
simply retained in position by the appropriate anchorage
system
 Long life
 PSP is constructed of post constraint, reinforced concrete
having a useful life exceeding 50-years.
 No dry-docking required, and requires no significant
maintenance of the basic hull.

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Float Inc. Pneumatically Stabilized Platform (PSP)
Wave – Incident / Wave - Transmitted = Attenuation of Wave Energy Model
L
ai
at
h
B
L
Under Platform field
Incident Transmitted
Energy Flows

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Float Inc. Pneumatically Stabilized Platform (PSP)
ONR Results of tank tests :
Validation of technology & performance characteristics of the
PSP
1997/1998 –
Office of Naval Research (ONR)
Comprehensive tank tests completed in:
•Offshore Model Basin, Escondido, California, USA (www.modelbasin.com)
•J.K.K. Look Laboratory, Ocean Engineering Department, University of Hawaii,
Hawaii
Model Tank Test Results concerning wave attenuation revealed:
Wave Attenuation
Wave Period Wave Height (% and meters)
7 seconds 0m90 94% & 0m05
9 seconds 2m50 72% & 0m70
12 seconds 5m50 50% & 2m75
16 seconds 10m00 63% & 3m70
20 seconds 15m50 54% & 7m13

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Some pics/ideas for
Oceans Offshore Energy System
Offshore Ocean Energy System
proposed and presented by

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Float Inc Offshore Ocean Energy System (OOES)
accommodates onboard the
Pneumatically Stabilized Platform (PSP)
 Offshore Wind Energy
 Offshore Wave Energy
 Offshore Ocean Current
Energy
 Potential Energy Storage
(PES)
 Ancillary Applications:
 Aquaculture & related
activities
 Desalination plant
 LNG Liquefaction & Re-
gasification Facilities
 Offshore Ro-Ro and/or
Container Port
 NB: Not an exhaustive list
All on the same Platform - PSP

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Offshore Wind Turbine Farm
onboard the Float Inc
Offshore Ocean Energy System (OOES)
 Structural stability that allows
any standard Offshore Wind
Turbine to be easily deployed.
 Wind Turbine foundations
same as onshore
 Access, maintenance and
operation similar to onshore
 Transformer station in-the-dry
 Storage of spare and repair
parts
 No new specialized vessels
needed to transport
equipment or personnel
directly from ports to platform

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Example of an Offshore Zone
Preliminary Calculations:
Galicia, Spain source 40+ year Wave Data History
 Location specific:
 Northwest Galicia, Spain
 WANA Buoy N° 2 (1048076
@ 44.00°N 8.00°W)
 Distance from coastline =
15nms / 28kms / 17miles
 Buoy anchor depth = 205m
 OOES configuration:
 12each @ 3MW WT 36MW
 NB: Overall output
simulated as maximum
 Rho-Cee WEC rated
60kW/m x 1200m 72MW
 Total Power Rating 108MW
 PES @ 12MWh (cold)

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Example of an Offshore Zone
Preliminary Calculations:
Galicia, Spain source 40+ year Wave Data History
NW Spain Wave Energy Potential
405
428
416
405
249
272
203
214
208
203
125
136
6,753
6,639
6,562
6,488
1
2
3
4
5
6
WANABuoyN°
MWh/m
Annual Wave Power (MWh/m) Rho-Cee WEC Capture (MWh/m) Hours/year

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Waves, Winds ± 60°
Calm
zone
Calm
zone
Wind & Wave Together - Extending the Wind Turbine farm
Complimentary on the Float Inc
OFFSHORE OCEAN ENERGY SYSTEM (OOES)
PSP span @ 1040m Rho-Cee WEC width @ 1200m
Wind Turbines spacing @ 200m (extendable-leeward) with rotor diameter @ 90m
Wind Turbine rating @ 3MW Rho-Cee WEC rating @ 60kW/m
200m dock - struts 200m x 5m concrete culvert pipe, w/rails
Total Power Rating: 108MW PES Storage: ~12MW-Hr, cold
Calm
zone

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Estimated Annual Results for the
Galicia, Spain location
 12 each 3MW wind turbines 101,000MWh
 Rho-Cee WEC 1,200m width 256,000MWh
 Total Electricity Generated 357,000MWh

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Thank you for your kind attention
www.floatinc.org