Choosing the right rope for anchor is not just about buying supplies, but about the safety of your swimming gear. Anchor falla It's under tremendous stress, like ripping from waves, friction against rocky bottoms, and aggressive exposure to saltwater or ultraviolet light, and a mistake in choosing the diameter or type of material can lead to a cliff and the loss of an expensive anchor, and at worst, to the demolition of the boat into open water.
Many beginners make the mistake of using random cables left over from construction or household needs. Polypropylene The string may look durable but will quickly collapse under the sun, and the metal cable will require gloves to work and can damage cylinders. PVCIn this article, we will discuss the technical specifications of materials, methods for calculating length and nuances of operation.
The main task of the fala is not just to hold the anchor, but also to extinguish the dynamic jerks that occur when pitching. An ideal anchor cable for an inflatable boat should have a minimum specific gravity (to sink with the anchor) and a high tensile strength exceeding the weight of the anchor by 10-15 times. Let’s look at the main selection criteria in more detail.
Criteria for the selection of material for anchor cable
The first thing to look out for when buying is the type of weaving and the thread material. The market offers a variety of options, from cheap synthetic cords to specialized ropes with a Kevlar core. PVC It is critically important to have no rigid elements that could damage cylinders when coiled or etched.
The most popular solution is considered nylon It's a circular weave cord, and it's very elastic, so it can stretch 20 to 30 percent under load, and it can act as a shock absorber, and it's especially valuable in windy weather, when the boat starts to jerk very hard.
- 🧶 Nylon (Polyamide): High strength, excellent shock absorbing jerks, sinks in water, but actively absorbs moisture (up to 15% of weight), which can be a disadvantage for long-term storage.
- 🌊 Polyester: It does not absorb water, is resistant to ultraviolet light, but has less elasticity compared to nylon, which requires more careful handling when jerking.
- 🚫 Polypropylene: Cheap and light, floats on the surface, but quickly degrades under the influence of sunlight and has a low melting point, which is dangerous when friction.
When choosing between nylon and polyester, many water-engineers prefer the former because of its ability to "work" like a spring, but if you plan to keep the boat assembled with the anchor installed for a long time, the first option is the one that is the most important. polyester It will be more reliable, because it will not gain excess moisture and will not start to dampen.
Calculation of the length and diameter of the anchor tile
The length of a rope is a parameter that is often underestimated, guided by the principle of "more, the better." However, excessive length creates confusion in the cockpit and increases the weight of equipment. There is a proven formula: the length of the fail should be approximately 1.5-2 lengths of maximum depth on the body of water where you plan to anchor. 15–20 meters.
The diameter of the rope depends on the weight of your anchor and the size of the boat. Too thin cord will cut your hands when sampling, and too thick will take up a lot of space. For inflatable boats up to 3 meters long and anchors up to 4 kg, diameter is quite enough. 6-8 mmIf you use heavy cat anchors or plows weighing 6-8 kg on boats longer than 3.5 meters, the diameter should be increased to 10–12 mm.
⚠️ Warning: Never tie the anchor shaft rigidly to the rump ring on the bow of a PVC boat without using a bursting element! When anchored at the bottom, a strong jerk can flip the inflatable vessel or tear off the transka board.
For safety purposes, it is recommended to use a system with burst-core (a smaller diameter phala, for example, 2-3 mm), which connects the main rope to the anchor. In the case of a dead hook, you pull the main rope, the thin cord will burst, and you can pull the anchor by pulling the back side (usually the ring on the top).
Comparative table of material specifications
To organize information and make it easier to choose, let's go to numbers: different materials behave differently under extreme conditions. Below is a comparison of the main parameters that affect durability and usability.
| Parameter | Nylon (Polyamide) | polyester | Polypropylene | Steel cable |
|---|---|---|---|---|
| Floating | Thunder | Thunder | Swimming. | Thunder |
| Moisture absorption | High (up to 15%) | Low (<1%) | Missing. | Missing. |
| Resistance to UV | Medium | High. | Low. | High. |
| Elasticity | High (dampensing) | Low. | Medium | Missing. |
| Price. | Medium | High. | Low. | High. |
As you can see from the table, steel-line loses to synthetics in ease of use on inflatable boats due to the lack of depreciation and the risk of damage to cylinders. Polypropylene tempting for its cheapness and buoyancy, but low resistance to ultraviolet light makes it short-lived.
The best balance of price and quality for most fishermen and tourists is nylon cordIt combines the ability to sink (which is important for the verticality of the anchor) and extinguish the jerks. Polyester is a choice for those who often leave the boat in the scorching sun for several days in a row.
For PVC inflatable boats, the best choice is a 8-10 mm nylon cord, as it combines strength, the ability to sink and cushion the boat’s jerks on the wave.
Fixing and fitting methods
Just tying a rope to an anchor is not enough. Competent equipment makes life easier on the water and saves nerves. There are several proven mounting schemes that are used by professionals. The main task is to ensure the reliability of the connection and the ability to quickly release the anchor.
The classic circuit includes the anchor itself, the main rope (fal), and the burrepel (the line running from the top of the anchor to the main phala). The main fastener is often used carbines made of stainless steel or brass. It is important that all metal elements are smooth, without burrs that could rub rub the main fastener. polycore.
- 🔗 Bulin's knot (Besedny): Creates a non-tightening loop, ideal for fastening the rope to the rump-ring of a boat or anchor.
- 🪢 Bayonet: Simple and reliable for temporary fastening, easy to untie even after a heavy load.
- ⚓ Carbine with vertebrae: Allows the rope to scroll, preventing the twirl around itself in wind or current.
Special attention should be paid to storing the rope in the boat. The cord wound into the cove should be placed in a special box or bag so as not to interfere with movement and not get confused. Some anglers use plastic buckets with a slot in the lid through which the rope is passed, which prevents it from popping out and entanglement.
☑️ Checking the anchor system readiness
Safety technique when working with an anchor
Anchoring in a small inflatable boat carries risks that are often overlooked in calm weather. The main danger is inertia. PVC boats are light, and if you pull the anchor shaft sharply in strong currents or winds, you can easily be behind the boat or be hit by a heavy anchor.
Always wear protective gloves. Nylon or A polyester cord, when passed through the hands quickly at the speed of the boat, can instantly rip the skin off to meat ("friction burn"). Even if the rope seems soft, at high sampling speeds it turns into a cutting tool.
⚠️ Warning: Never wrap an anchor rope on your arm, wrist or body! It's deadly. If you pull a boat abruptly, the rope can keep you from swimming out or pulling you for an outboard motor screw if it's lowered.
Another important aspect is to control the position of the boat relative to the wave. When anchored, the boat must stand with its nose against the wave or wind. If you turn on the side, you must immediately add the length of the fail or change the place, as the side rolling for an inflatable boat is critical and can lead to a rollover.
What if the anchor is stuck dead?
If the anchor is stuck, don't try to pull the boat at full power, it can damage the transom. Try to create tension in one direction, wait for the current or wind to weaken, and pull in the other direction. Use a buoy tied to the top of the anchor to pull it upside down.
Care and storage of anchor equipment
The proper care of the anchor cable extends its life many times over. After each foray, especially into salt water or into the muddy (silty) river, the rope must be washed with fresh water. Sand and salt, stuck between the fibers, work like an abrasive, rubbing the threads from the inside with each movement.
Dry phal You need to be straightened, in the shade. Direct sunlight combined with moisture accelerates the degradation of polymers. Nylon, as mentioned earlier, is prone to moisture gain, so keeping a wet bay in a closed backpack can lead to mold and a bad smell that is difficult to remove.
Periodically, at least once a season, conduct a visual inspection of the entire length of the rope.
- 👀 Folding: If the surface began to shatter, then the outer shell is damaged.
- 🎨 Color change: Burnout or spotting may indicate chemical exposure or UV destruction.
- 🧵 Thinning: If there are areas that have become thinner or harder to touch, they need to be urgently trimmed or replaced with the entire phala.
Store the anchor system is better in a dry, cool place, away from heating appliances and aggressive chemistry (gasoline, oils, solvents), the pairs of which can destroy the structure of the polymer.
For quick drying of wet anchor cord, use a centrifuge from the washing machine (in the pressing mode without water), pre-placing the rope in a pillowcase or mesh bag. This will remove 80% of moisture in 2 minutes.
Can I use a regular linen rope for anchoring?
Not recommended: Linen ropes are usually made of polypropylene with the addition of cotton or have a core that is not designed for dynamic loads, they quickly break down under ultraviolet light and do not have the safety margin necessary to hold the boat in the gusts of wind.
How long should the anchor phalt be for a river with depths up to 5 meters?
The optimal length is about 15 meters, which will allow you to anchor at a factor of 3 (for rivers with the current you need to etch more rope than on standing water) and will give you room for maneuver when changing the depth or demolishing the boat.
How to prevent entanglement of the rope around the engine screw?
Always control the slack of the rope. If you are anchored with a motor running (e.g., electric), keep a small tension. Before starting the main motor, make sure that the anchor is raised and the rope is fixed in the bow, rather than dangling in the water.
Which is better: a chain or a rope for an inflatable boat?
For PVC boats up to 3.5 meters long, the rope is preferable. The chain is heavy, can damage cylinders if handled carelessly and requires more storage space. The rope is lighter, more compact and safer for inflatable bottoms and boards.
Do I need to lubricate the anchor rope?
No, you can't lubricate the anchor cables, any oils and fats will attract dust, sand and dirt, which will turn into an abrasive mixture, and you can't hold the lubricated rope in your hands, especially with gloves.