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Mobile fish farms

Home Forums Archive Infrastructure Mobile fish farms

This topic contains 4 replies, has 4 voices, and was last updated by Profile photo of vincecate vincecate 6 years, 3 months ago.

Viewing 5 posts - 1 through 5 (of 5 total)
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  • #689
    Profile photo of vincecate
    vincecate
    Participant

    With big low rpm propellers they can move a 62 foot diameter fish farm though the ocean at about 1 foot/second with 12.5 hp.

    http://technology.newscientist.com/article/dn14663

    This is fun because we could use mobile fish farms and because we could use big low RPM propellers to push seasteads.

    #3760
    Profile photo of Thorizan
    Thorizan
    Participant

    Aquaculture is really catching on. I think that it can give seasteading a really big push into reality. The world stopping hunting, and starting ranching. The world stopped gathering, and started farming. The world will stop fishing, and will start aquaculturing. It’s a natural transition. Seasteads will lead the way.

    #3766
    Profile photo of
    Anonymous

    Very cool. I´m sure you can do dynamic positioning of seasteads like this, and keep it reasonably economical.

    #3770
    Profile photo of
    Anonymous

    It’s not nearly as much mobility as uncaged fish have, but having a moveable fish cage could help find natural sources of food (smaller fish), reduce impact on a given local environment, etc.

    Heck, train the caged fish to swim towards prey and have them move the cage themselves…. Just drop some food outside the cage in the direction you want to move and see what happens….. :) Fish power!

    #3772
    Profile photo of vincecate
    vincecate
    Participant

    I think the big propellers are a very important part of making this work. The push you get from a propeller is proportional to the change in momentum the propeller gives some water which is:
    mass * velocity

    for the mass of water pushed out the back at some velocity. The energy put into that water by the propeller is:
    1/2 mass * velocity^2

    So if you are going slow you really want a big propeller that pushes slowly on a lot of water. Using a small fast propeller on a big slow seastead would take far more energy for the same push.

Viewing 5 posts - 1 through 5 (of 5 total)

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