Artificial ropes can be comparable in strength to steel ropes. Modern polyethylene (PE) ropes are known for their strength and stiffness, and don't mind getting wet at all. Polypropylene (PP) ropes, on the other hand, float well and are produced in bold colours, emphasizing their use as rescue ropes. They are mainly used for anchoring, mooring and towing wherever it needs to absorb large shocks. Polyamide (PA) ropes are very elastic but do not float and partially lose their strength when wet. The ropes themselves can be roughly divided according to the material used and their knit. What types of sailing lines and ropes will you come across? On ropes with a braided core (which all climbing ropes are), this knot is unstable. In the mountaineering world, it has almost been doomed to oblivion. The bowline used to be very popular among climbers, until several deaths occurred as a result of the knot coming undone under particular conditions. Quick and precise tying of a bowline knot is worth practicing, at sea it will be a lifesaver. The bowline can also be tied on a doubled rope to create a solid knot with two loops, each of which can be set separately. You can even use two bowline knots to join two ropes together, although there are more elegant and secure solutions. The bowline is a great aid when mooring to a ring, to bollards and other spots. For it to work properly, you need to tie it tightly. It’s very easy to loosen even when tied tightly and after high tension. It’s very secure, does not slip and, as a result, won't reduce the strength of the rope on which it is tied. Most commonly it is used to form a fixed loop at the end of a line. This knot is highly versatile and one of the most popular knots, not just among mariners and sailors. The big advantage of the clove hitch is that it can be loosened relatively easily, even after its been tied tightly. Even in this case, it is still recommended to secure the free end of the rope with at least another simple knot. When not yet loaded, the knot is simple to adjust, so the length of the rope can be easily altered. The clover hitch can prove useful when tying a rope to a ring. At present, therefore, other knots are used for mooring boats, with a fixed or loose loop on the bollards and the line tension being regulated by the mooring on board the boat. This knot also holds poorly on lines made from synthetic fibres and in cases where the knot load slackens or its intensity changes significantly. However, the use of a clover hitch is not recommended when the object tied to the cylindrical object can rotate, as it will almost certainly loosen. It consists of two simple overhand knots stacked in different winding directions. It is a very simple knot, but it does also have its disadvantages. This knot was originally used to moor boats to bollards in the harbour.
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