Throw line
A throw line (also called bola line or just bola ) is a thin line that is weighted down with a throw knot , a monkey fist or a throw bag . In seamanship, it serves the purpose of transferring mooring lines from the ship to shore without the ship having to maneuver closer than necessary and possible to the quay or pier . This method is also used when creating a ship-to-ship connection, for example to pull a tow rope to the harbor tug on the thin throw line .
In nautical jargon , the catcher of a throw line is often called a "kairatte". While it is considered unfair , aiming the throw line directly at the catcher is popular fun. Heavy throwing weights are quite dangerous.
Use of a throw line
Since the mooring lines are far too heavy to be cast ashore over a long distance, the throw line is thrown ashore from the ship instead. One end of the throw line is tied to the mooring line and weighted at the other end (see above). The special skill in using a throw line is to throw it so that it does not get tangled. To do this, you shoot (wind) them in coils of about half a meter to a meter in length and hang them over an outstretched palm. The throwing weight and about ten turns are taken in the other hand and thrown in such a way that the other turns unwind from the hand without appreciable resistance. The throw line is picked up by a mooring line who pulls the mooring line towards him. The mooring line is placed over a bollard and the throw line is then untied again. Then it is up to the ship's crew to “get stiff” the mooring line and to “lay” it ( to wrap it around a double bollard or a cleat in an eight- shape).
For greater distances, the throwing line can also be deployed with a firing device, the line shooting device (in commercial shipping with a 250 m line).
The throw line is tied to the mooring line
The throw line is thrown ashore
The mooring line pulls the mooring line ashore
Throwing line as a sporting discipline
In the area of sea sports all- around , the skills are practiced under competitive conditions. Here it is important to carry the throw weight with the greatest possible accuracy over a specified distance into a marked area or to throw the throw bag with a line in a five meter wide alley without turning or the like as far as possible. Adult men can reach distances of around 30 meters, and women around 20 meters.
Water sports, mountain sports, rescue technology
Throw lines are also used in non-nautical areas when a distance or height has to be overcome with a line ( SKT , climbing , technical climbing, etc.). The throw bag (or another suitable weight) at the end of a line allows a line to be brought to the ground from height without disturbing influences.
A throw bag is mounted near the end of a rope by threading a short length of rope through a small opening in the bottom of the bag. Typically, a fixed loop, knotted with a figure eight knot, a hand ring, a carabiner (to hang in the chest (seat) belt of a person to be rescued) or a (floating) lifebuoy is tied into this short free end .
The long end of the rope is placed in short loops in the elongated cylindrical (typically 10 cm diameter, 30-40 cm length) sack and stuffed. The last piece of rope must always remain outside the sack in order to reliably prevent unwanted entanglement or knotting. At its opening, the sack is pulled relatively tightly with a cord passed through the edge to prevent further rope from running out. This end of the rope is also given a loop, here the person who - if necessary - is supposed to throw the rope, ties himself in on the chest. There are life jackets for paddlers that hold the throw bag on the back.
Before throwing the rope with the throw bag, the cord lock is fully opened and a piece of rope is pulled out in order to gain freedom of movement for the throwing movement of your own body. When throwing the bag, the opening of the sack is closed with the hand and thus closed or a wrist strap located near the opening is used. The sack should be thrown without sack rotation so that the rope can be pulled out of the sack successively as easily as possible. It is typical that the rope itself forms the swing-absorbing throwing mass.
It is important that the thrower comes close enough to his target. If there is a threat of complications due to too much rope length (e.g. by immersion in strong flowing water), the rope on the rescue side can be removed from the sack before the throw and the lifeline shortened here.
Lifelines in the throw bag are 15–45 m, typically 20 m long, total weights including the sack range from around 0.5–1.5 kg. Cap can be formed floatable having fluorescent color, with an additional throw ball - to be equipped throwbags to a flared opening for easy storage of the cable, have a - for eie rapid "second chance" snap light record.
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- ↑ Marine.de
- ↑ Deutsche Marinejugend e. V. ( Memento from April 28, 2015 in the Internet Archive )
- ^ Deutscher Seesportverband e. V.
- ↑ saving throw linen lehmar.de, accessed August 25, 2020.
- ↑ ° hf Wurfsack Weasel Red-Yellow whitecapsproducts.com, accessed August 25, 2020.