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 AquapodŽ 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.

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 ")

Mushroom Eats Plastic, Saves Planet
Fungus Amongus, SaveUs!

Is There Extraterrestrial Life Here In The Solar System
'How fast is it moving? ...one meter per minute.' - Arthur C. Clarke, 1982.

Chinese Fern Helps Remediate Arsenic Soil
'Bioengeering had put out a spec report on the long crawly things five months back.' - Gregory Benford, 1983.

New Lifelike Material Powered By Artificial Metabolism
'... The biological robots were not living creatures.' - Arthur C. Clarke, 1972.

 

Google
  Web TechNovelgy.com   

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.

 

 

 

 

 

Current News

Cruise Autonomous Car Drives Aimlessly For An Hour
Convincing video shows progress (and limitations).

Fast Charging A Bus In 20 Seconds
'... in almost every town and village.'

Realistic Translation With The Waverly Labs Ambassador
'The speech patterns you actually hear decode the brainwave matrix which has been fed into your mind by your Babel fish.'

Biotech Firms Raised $Millions For Anti-Agathics (Longevity Drugs)
'Against Death doth no simple grow.'

Out-Of-Work Blue Collar Robots Need Your Help
'His legs relaxed with a rattle as he cut off all power below his waist... and ran his eye down the Help Wanted - Robot column...'

The Dawn Of Orbiting Manufacturing In 2020?
'It can be mass-produced only in the orbiting factories.'

Smart Contact Lenses Charges With 3D Printed Antenna
'He realized that it was not quite a clear lens.'

Segway S-Pod Fulfills Dire 1928 SciFi Prophecy
'Noiselessly, on rubber-tired wheels, they journeyed down the long aisles...'

Physicist Inspired By SciFi And Seeing Back In Time
'Here is the chronoscope... Scansion depends upon a special curved field...'

Airbnb Has AI Psychiatrist Looking At Your Facebook
'It's illegal to hold back information during a psyche test.'

NASA's Electric Motor Scooter
'...all the [lunar] prospectors took bicycles along as a matter of course'

Moving Suns To Different Galactic Neighborhoods
'...to swerve their star from its course, the globemen made use of a simple physical principle.'

Students Surveilled By School Phone Apps
Cheer up, students. '...cracking my SchoolBook had been easy.'

Massage Robot Has Soft Hands, Er, Pads
'The automatic massager began to fumble gently over my naked form.'

Medical Tattoos Are STILL Being Researched
'Following the current craze, she has had a subdermal pattern of micro-channels implanted.'

Elon Musk's Traffic Tunnel Challenge Is Boring
'The car vibrated... threading the maze of local tubes.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.