Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


TOURIST ADVICE
Free library / Directory / Tourist tips

docker node. Travel Tips

Tourist tips

Directory / Tourist tips

Comments on the article Comments on the article

In marine practice, it often becomes necessary to attach a much thinner cable compared to it to a thick rope. Such a need always exists during the mooring of the vessel to the berth, when one or several mooring lines must be supplied from the deck. There are several ways to attach the throwing line to a mooring line that does not have fire, but the most common of them is to use docker node.

To tie this knot, the running end of the thick cable to which you intend to attach the thin cable must be folded in half. Insert a thin cable into the loop formed from below, make one run around the root of the thick cable, pass it under the thin cable, then over the running end of the thick cable and, passing under three cables, insert it into the loop.


Rice. 40. Docker node (lower right - another version of the node)

The docker knot is reliable enough to pull out (or lift onto the deck from the shore) a heavy mooring line with a throwing end, and quickly unties. It is best used as a temporary knot.

Author: Skryagin L.N.

 We recommend interesting articles Section Tourist tips:

▪ Foot care

▪ Fish

▪ Eight at one end

See other articles Section Tourist tips.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

The threat of space debris to the Earth's magnetic field 01.05.2024

More and more often we hear about an increase in the amount of space debris surrounding our planet. However, it is not only active satellites and spacecraft that contribute to this problem, but also debris from old missions. The growing number of satellites launched by companies like SpaceX creates not only opportunities for the development of the Internet, but also serious threats to space security. Experts are now turning their attention to the potential implications for the Earth's magnetic field. Dr. Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics emphasizes that companies are rapidly deploying satellite constellations, and the number of satellites could grow to 100 in the next decade. The rapid development of these cosmic armadas of satellites can lead to contamination of the Earth's plasma environment with dangerous debris and a threat to the stability of the magnetosphere. Metal debris from used rockets can disrupt the ionosphere and magnetosphere. Both of these systems play a key role in protecting the atmosphere and maintaining ... >>

Solidification of bulk substances 30.04.2024

There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>

Random news from the Archive

Stress damages the bones 21.09.2020

Scientists at the Chinese Academy of Sciences have found out how stress affects the loss of minerals from bones.

Nerves - that is, stress, depression - can literally cause a variety of diseases. But what mechanism is at work here? What areas of the brain are involved and what substances do they use to affect the bones?

It turned out that everything starts with a group of neurons in the terminal strip - the so-called part of the brain in the amygdaloid region, which includes the amygdala, or amygdala, and a number of other nerve centers. Neurons of the terminal strip synthesize the hormone somatostatin, which can also play the role of a neurotransmitter.

Somatostatin reduces the synthesis of somatotropin, another hormone that stimulates bone growth and performs a number of other functions. Under chronic stress, somatostatin neurons of the terminal strip suppress the activity of other neurons that are located in the hypothalamus. All together - the activation of neurons in the terminal stria and the suppression of neurons in the hypothalamus - gave anxious behavior and bone problems.

"Alarming" signals from the hypothalamus come to the nucleus of a solitary pathway - this is the name of the nerve center in the medulla oblongata, which controls the work of many internal organs. The nucleus of the solitary pathway sends signals to the sympathetic nervous system, and the nerves of the sympathetic nervous system process the bones with norepinephrine. And norepinephrine already suppresses the work of bone cells responsible for the growth of bone tissue.

Other interesting news:

▪ Birth control pills affect fear

▪ Biometric scanners for smartphones

▪ Sheep sowers

▪ Global warming will hit the US especially hard

▪ Drive GALAX Gamer 240-M.2 PCI-E 2280

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site The most important scientific discoveries. Article selection

▪ article Space emergencies. Basics of safe life

▪ article Who in Soviet times was awarded the prize for the invention of the time machine? Detailed answer

▪ Yosemite article. Nature miracle

▪ article PTFE insulation. Encyclopedia of radio electronics and electrical engineering

▪ article Riddles about mushrooms

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024