This is a really great question! You actually would not be able to cause a hurricane by putting hot water into the sea. It takes a LOT of heat to warm the ocean, and climate change is already doing that for us enough!

You are correct in thinking that hurricanes form over warmer waters, but to make hurricanes, you also need wind. As winds pass over the ocean, it causes the warm, moist ocean air to evaporate and rise up into the atmosphere, where it cools to form storm clouds. Eventually the winds will start rotating, and if the winds get strong enough (<74 mph), you get a hurricane.

So, in addition to warm water, you have to have very strong winds as well. NOAA has a great infographic for kids on how hurricanes form, and I've included it for you here:

I hope this has answered your question. Have a great day!

Well you COULD but you would need SO MUCH HOT WATER and it would be SO EXPENSIVE that it is easier to let MOTHER NATURE DO IT!

Hurricanes form over tropical waters where winds are light, the humidity is high in the atmosphere for many kilometers upwards from the surface and the surface water temperature is warm, typically 80 deg F or greater over a VAST area. Typically unorganized thunder storm activity amalgamates to start the Hurricane formation process.

These processes occur over thousands of square miles and so humans could never engineer such a feat!

Since warm ocean water is one of the major players in hurricane formation, if we did put enough hot water in one area of the ocean so that area becomes warm enough to start forming clouds/thunderstorms, then a hurricane may in fact start in that area. However, making the ocean warm enough would probably require more hot water than we can realistically ship/fly, so practically, we probably can't make an artificial hurricane.

Hurricanes get their moisture and energy by evaporating warm ocean water. The warming of oceans due to climate change is increasing the risk of hurricanes. On the other hand, it is unlikely that you could cause a hurricane by deliberately adding hot water, because the amount that you could add is very small in comparison to the amount of water in a hurricane (Hurricanes can carry trillions of gallons of water).

In theory, yes, but the amount of hot water that would be required to do so is so great that we humans would have a hard time actually doing this.