Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
Self-Propelled Underwater Fish Cages
A self-propelled underwater fish cage developed and recently tested by an MIT researcher may provide a way for fish farming to move out onto the open ocean.
(Giant self-propelled fish farm video)
Cliff Goudey, director of MIT Sea Grant's Offshore Aquaculture Engineering Center, is exploring a different approach to moving the cages. By placing large, slow-turning propellers directly on a cage, Goudey frees it from the normal constraints of a boat. His system uses a pair of eight-foot diameter, electrically powered propellers, with 6.2-horsepower underwater motors. The motors are powered through tethers to the surface attached to a diesel generator and a pair of motor controllers mounted on a small boat.Recently he tested the approach at Snapperfarm Inc., an offshore fish farm in Culebra, Puerto Rico, that grows cobia in submerged cages. By fixing a pair of the propellers to the mid-depth of a 62-foot diameter Aquapod® fish cage in a horizontal line 9 feet apart, Goudey maneuvered the cage as well as any boat-based system.
Mobile fish cages could solve a variety of problems related to fish farming in the open ocean. The limiting factor in the number of fish that can be raised in a cage is often the oxygen content of the water during slack water. A moving cage could ensure a steady supply of fresh water.
Fish farming, in the sense of raising fish in a land enclosure for food, has been around for centuries. Mariculture, the raising of fish for food in the open ocean, is only a few decades old.
Update 27-Jan-2024: This is a patent drawing submitted by Hugo Gernsback, not part of a science fiction story, however:
(Hydraulic Fishery patent drawing by Hugo Gernsback in 1953)
End update.
From MIT tests self-propelled cage for fish farming.
Scroll down for more stories in the same category. (Story submitted 9/11/2008)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 2 )
Related News Stories - (" Biology ")
What'll You Have? Extinct Animals Returned, Or Synthetic Eggshells?
'...a new plastic with the characteristics of an avian eggshell.' - Michael Crichton, 1990.
Black Fungus Blocks Radiation
'You were surrounded by Astrophage most of the time' - Andy Weir, 2021.
Lunar Biorepository Proposed For Cryo-Preservation Of Earth Species
'...there was no one alive who had ever seen them. But they existed in the Life Bank.' - John Varley, 1977.
Let's Make Slaver Sunflowers! Engineering Plants To Reflect Light
'The mirror-blossom was a terrible weapon.' - Larry Niven, 1965.
Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
AI Operates An Excavator
'So far as I could see, the thing was without a directing Martian at all.'
US Army IBEX Exoskeleton Walks Troops Out Of Danger
'The suit stands up and starts walking, gripping me round the calves and waist, taking the bulk of my weight off my throbbing feet.'
Boy Makes Biomimetic Turtle Robot
't came out into plain view. Darkington glimpsed a slim body and six short legs of articulated dull metal.'
Elon Musk Wants Data Centers In Space
'Internally it’s made up of millions of components, but the most important ones are the thinking and memory parts of the Mind proper.'
Origin F1 Humanoid Robot's Facial Skin
'I could look down at that face of carefully molded synthetic rubber, tinted the exact shade of the doctor's living flesh.'
Grok And The City Fathers From 'Cities In Flight' By James Blish
'Chris, the City Fathers are not interested in your welfare; I suppose you know that. They're interested in only one thing: the survival of the city.'
Why Not Move A Warehouse District?
'Did you never see a moving house before?'
Will An AI Found A New Religion?
'You must decide how you will worship Me.'
Terraformer Industries Make Methane
'Drake was the young spatial engineer he employed to terraform the little rock...'
I Need An Outdoor Spherical Display
'Usually a spherical display hovered in the centre...'
Worm Disrupts Physics Simulations Undetected For A Decade
'It diverts integers of the data, the fundamental message-units, so that they no longer agree.'
Muxcard Redditor's DIY Credit Card-Sized Computer
It's a computer, but just barely.
'Soft Assembly' Fashions That Fashion Themselves On The Wearer
'Clothes are no longer made from dead fibers of fixed color and texture that can approximate only crudely to the vagrant human figure...'
Orwell's Nightmare Of AI-Written Novels Comes To Pass
'Books were just a commodity that had to be produced, like jam or bootlaces.'
ISS Plagued By Leak - Again!
'There were perhaps a dozen bladder-like objects in the tunnel...'
Ridiculous 'Ghost Murmur' Tech Still Science Fiction
'...it rears and spreads its fan. It can pick one man out of a crowd.'
