That is the problem, you might as well be speaking French. I have no idea what these systems are or how they work. Some links for some shops that people buy from here would maybe help. There are no local shops here, the nearest model shop here is on the WWW which is very sad.
Let's try a basic introduction - sorry if it's too simple. I will provide prices which are wild guesses, but might give you a bit of a feel for the costs...
You can either buy a 'ready-to-run' boat, which will come with everything (though sometimes you have to buy batteries separately), or make one.
If you make one it's usually a good idea to start with a kit, which provides materials (often a shaped hull) and instructions. It usually won't have a motor or Radio Control set, though it might have the propeller, propshaft and rudder.
If you are not using a kit, you could build from a plan, though this is not considered a good idea for a total novice who may not understand it. If you have a fairly clear idea of what shape you want to make and how to go about it, I would recommend drawing a plan anyway - it helps a lot to see where things will go....
Moving onto the 'bits' to go inside, you will start with a motor (or more than one, perhaps, if you are thinking about multiple props). Let us assume you want an electric motor - by far the most common type used nowadays.
Modern motors are either brushed (traditional) or brushless (powerful, fast, and borrowed from the flying fraternity!). For a ferry, you will probably want a brushed motor. There are all sorts, but you will find a common naming system based on numbers is often used - a 540 or a 700. See here for more info.
http://www.modelboatmayhem.co.uk/Common/Electrics/How%20Fast.htmIf you need to buy a propellor or rudder, your local shop should provide. If not, here are a couple of well-known reputable model boat websites which sell lots of stuff:
http://www.westbourne-model.co.uk/http://www.cornwallmodelboats.co.uk/Expect to pay about £20 for a prop, propshaft and rudder, and perhaps £15 for a motor. Ask about matching the right sizes together. You will also need a connector to join the motor to the propshaft...
To control the motor and rudder you will need a radio control. These come as a Transmitter and receiver (called a 'combo' or a Tx/Rx) and then some servos - one for each function you want to control. To control a motor you use a special 'servo' called an Electronic Speed Controller (ESC). There are different sizes of ESC for different motors, and brushless motors need a special type. You can get servos from £2 to £20, and ESCs for about £20-£50. Ask on here for specific advice when you come to buy a motor/esc combination..
Finally, you will want some batteries. You will want them to be rechargeable, so you will need an appropriate charger. There are several different battery types, you will probably want either NiMh or a 'gell cell', which is a lead-acid chemistry like your car, but completely sealed. Lithium Polymer batteries can provide a lot of power in a very light package, but need a special charger, care in handling, and are mainly for fast boats, so you're probably not interested in them. Expect to pay about £20-£30 for some batteries and a charger. You will probably want to run on 6-12v, depending on the motor...
Now let's think about the Radio. First, the frequency. All radio control models used to work on the 27Mhz band. Several spot frequencies were allocated in this band, referred to by a colour code, and radios had to be on 'different colours' if two or more were to be operated together. You achieved this by looking at little flags on other peoples aerials and then plugging in a crystal of a 'different colour' into your Tx and Rx.
Then more frequencies were allocated - 35Mhz for aeroplanes only, and 40Mhz for cars and boats. Again, these are crystal controlled, so you needed a set of crystals with each set.
Finally, the computer Wi-Fi band started to be used for radio control. This is 2.4Ghz, and can be easily recognised by the very short aerial needed. These sets automatically connect to their chosen Rxs, and don't need crystals changing. That's a major advantage, so many people are going to them. They also don't suffer from interference. I would recommend using 2.4Ghz, but you could pick 27Mhz or 40Mhz if you really wanted to...
50 years ago, radio sets used to be very expensive things. The major manufactures, such as Futaba, still cost a lot - say, £150 for a typical combo. For that you get a very nice bit of kit. But recently, Chinese manufacturers have been making dirt-cheap 2.4Ghz sets using the common cheap computer wi-fi electronics parts. These, as I have said, can be bought down to about £20. These combos are often fine, but one problem is that at these prices, things like instruction manuals and quality control are not provided. The very cheap combos are wonderful value for money for someone who knows what he's doing - as a starter you are probably better advised to get advice and buy from a local shop, or the local club. You can get simple systems with only two functions, which are ok for a simple model (motor speed and rudder), but most people seem to end up with the four function systems that the flyers use. A lot of people in your position get a Planet 2.4Ghz 5-function radio at about £50...
Hope this helps a bit. Plan what you want to do, take it in stages, and we are always here to help...
