A rope needs to be perfectly finished and combed to not diminish the resistance of the rope. The following are the different types of knots:
- Figure of eight: This type of knot is considered one of the most important types because it can be used to anchor the rope in the anchorage, to bind and unite ropes. It is also very easy to undo after it has had a lot of heavy traction, besides this it does not slip and slide.
- Bow line: This is the only rope that should be used to unite ropes.
- Tape knot: This is an auto-blocking knot in which ropes of the same diameter can be used. This rope is the most resistant. Usually used for joining the ends of tapes or slings. It can work loose sometimes, so check regularly, and re-tie if the ends are getting shorter. Tighten with body weight before use.
- Fisherman's knot: This knot excellent for uniting ropes. This knot is the one that has the possibility of breaking point. It does not slide and is used to unite ropes of different diameters.
- Figure seven knot: This knot is used to pull on the rope and can be used as a loop.
Bowlines: By using ropes, these allow us to use determined obstacles as empty spaces, for example. They can be used to pass a stretcher through them, a person, a dog, equipment etc. it also allows for the rescue team to slide the dog along by hooking it on to the dog's harness to the pulley through a snap link. The bowline will need to be assembled horizontally or inclined depending on the terrain or on what is needed. For this, you will need three ropes, one that will be used for support that must be static by which the object will slide through. Parallel to this one, another rope must be put together to assure the fall of the body in case the support rope breaks (this can happen if the rope has become weakened or if the weight is too heavy). Keep in mind that you will not need to pull the bowline too much, just pull it as much as is needed in order to work with it and leave a little angle to diminish excessive tension. The other two ropes are traction ropes; these will allow us to move the hanging body from the bowline from one side to the other. Once this is mounted, if it is inclined, you will also have assemble another one in the superior part which is where you will anchor a ramp if you are going to lower an object, this way you will be able to control the speed in which you are lowering it. If to the contrary you need to lift the object, you will need to use a tackle apparatus. A tackle apparatus consists of several pulleys that reduces the force needed to lift a heavy object. It is made out of pulleys and blocks, although normally in order to substitute these things snap links are used and special knots and ropes etc. In order to work effectively with these you will need the help of another person; one person to pull and the other to move it.