if salt water is a natural conductor of electricity why is it that there are no water craft built using this?

There is a magneto-hydrodynamic drive for submarines that works by passing a current through the salt water in a magnetic field, thus producing completely silent propulsion. It is called the Caterpillar drive, and is shrouded in secrecy. MIT built a simple demonstrator a few years ago, at the MIT submarine races.

Hydroelectric dams siphon off quite a few the capacity potential of water that is stored by utilising nature at extreme elevations (lakes, glaciers, groundwater), using fact the water nicely-knownshows its thank you to the sea. There are no longer any such resivoirs of salt water. The water finally all comes from rainfall and blizzard. If there became a extreme elevation lake of salt water, then you definately could, in concept, layout a magnetohydrodynamic generator to faucet its potential, yet i'm uncertain it would be from now on efficient or maximum fee effective than an uncomplicated mechanical turbine/generator setup.

From what i understand, although it Is a natural conductor, it isn't particularly efficient, or easy to handle. the only thing it has going for it is that there is so much of it. But even the quantity doesn't help because the formulation of salt water is not nearly consistent enough to develop a process to utilize it.

It's a conductor, yes. Wires are better and you can shape them into whatever form you need them. Besides, do you really want to electrocute the fish as you pass by them? But I like how you think outside the box. With a good science education and thinking like that you may just show me how it would be helpful.

electrify the ocean, like a monorail? or suck it into the craft and use it like wiring?

you would kill swimmers and fish if you electrified the ocean.

copper is a better conductor and not as messy.

all water conducts.

Lack of conductivity over distance.

what are you going to do power the ocean? cook the fish?

You don't even know what you are talking about.