| So let‘s move on now to look at the submarine that took James Cameron so far down into the ocean. If you look at the drawing of the Challenger you can see the pilot's chamber at the very bottom of the submarine. It's a very small section where the pilot sits and controls the sub and all the equipment on it. Now let’s have a look at how the submarine is powered. Going up from the pilot's chamber, in the middle of the sub, on the right hand side of the drawing, you can see a whole section covered in batteries. They provide the power source that takes the sub all the way to the bottom of the ocean and back up to the surface again. Next to that there’s another important part of the sub Ummm...... You probably realize that there's no light at the bottom of the ocean, so the sub needs to take its own. If you look at the back of the sub, in the middle just next to the batteries, you can see the panel of lights . They provide the light for filming and taking samples from the sea bed. And one more part of the sub, which is important for navigation and to stop it spinning out of control, is the large tip at the back. You can see it at the back of the sub, at the top of the drawing. |
