Finding a reliable anchor for an inflatable boat or boat often turns into balancing weight, size and grip. However, even the heaviest cargo can become useless if it has to be pulled out along with the roots of the algae or, worse, breaking the chains. anchor - a specialized device designed to minimize the risk of getting stuck in the bottom soil.
The principle of operation of such structures is based on a shifted center of gravity and a special geometry of the legs, which, when the rope is pulled up, simply turn over and leave the hook. For owners of boats, often changing the locations of fishing or recreation, it is not just an accessory, but a special accessory. prerequisite Let's look at why standard cats often lose to specialized models.
Choosing the right anchor has a direct impact on parking safety, and if you're planning to spend the night on the water or waiting for a cool one to flow, securing the anchor is critical, but it's equally important to get off anchor quickly, especially if there's a storm wind blowing or you need to leave immediately. The efficiency of the uncoupled reaches 95% on a rocky and hardened bottom, while in classical models this figure drops to 60%.
Design features and principle of work
The basic idea behind the non-lock anchor is to have a spindle-foot joint or a specific shape that prevents getting stuck. Unlike the classic cat, where the legs are rigidly attached, the movable elements allow the device to change the angle of attack. When the anchor is sampled, the force is transmitted to the top, causing the legs to fold or turn, which frees them from the ground.
The most important element of the design is grovel Many models have a special bar or weight at the top, which ensures that when you touch the bottom, the anchor will lie exactly as it should to enter the ground, rather than flipping upside down. Without this mechanism, the device can simply drag along the bottom without performing its function.
Materials also play a role, most commonly galvanized steel or corrosion-resistant aluminum. anchor NavigatorIt is much lighter than steel counterparts, which is critical for PVC inflatable boats, but they can be less durable when hitting rocks.
⚠️ Warning: When using movable paw anchors, be sure to check the condition of the hinge joints before each season. A sour joint can turn the uncouple into a regular load that cannot be removed without loss.
There's a misconception that the unlocking is bad at soft sludge. In fact, modern models with wide paws do great even on a viscous bottom, if you pick up the right weight, the main thing is to give the anchor time to burrow before pulling the rope.
Popular models: Danforth, Hall and their modifications
Among all types of anchors, the most popular were the designs developed in the middle of the XX century. anchorIt has two broad triangular legs on either side of the spindle, and thanks to its large footprint, it provides excellent holding power on sand and gravel.
The second most popular is anchorIt's a time-tested classic with a massive slug and legs that are complex in shape. Although heavier than Danforth, its design allows it to burrow securely in the ground even in high winds. Small boats often use simplified versions of Hall, which are easier to store in a handdock.
Also worth mentioning is the Grapple-type anchor, which is a versatile solution that takes up as little space when folded, and can rotate 180 degrees, making it ideal for squashed rivers where the risk of hooking is highest.
The choice between these models often depends on the type of bottom in your area. If you walk mainly on sandy beaches, Danforth will be ideal. For rocky bottoms, Hall or specialized models with elongated horns are better.
Comparative table of specifications of anchors
To make the choice easier, let's compare the basic parameters of popular models. It is important to understand that the weight of the anchor should be approximately 10% of the displacement of the boat, but for non-locks, this parameter can vary depending on the design.
| Type of anchor | Weight (kg) | Type of bottom | Folding |
|---|---|---|---|
| denforth | 2 - 15 | Sand, gravel, silt | It's sorted. |
| Hall | 4 - 20 | Rocks, shells. | No (monolith) |
| Grapple. | 1.5 - 10 | Grass, snags | It's folding. |
| Pyramid (Concrete) | 5 - 30 | Any (thrust) | No. |
As you can see from the table, anchor-pyramid (often made from concrete) is the absolute leader in weight, but completely uncluttered, working only on the mass, it is a good option for parking on a strong current, but not for transportation.
Foldable models like Grapple benefit from compactness, can be easily put into a bag without taking up useful space in the boat, but on clear sand, their holding capacity may be inferior to Danforth's.
For PVC inflatable boats up to 3.5 meters long, the best choice will be the Danforth anchor weighing 3-4 kg. It is light enough to carry, but reliably holds the boat even in moderate winds.
Manufacture of anchor-unlocked DIY
For many aquatic motorists, making an anchor DIY is not only a way to save money, but also an opportunity to create a device that is ideal for specific tasks, the easiest and most effective option is to rework a standard "cat" or weld a structure of sheet metal.
To make the Danforth analog, you'll need 4-5 mm thick sheet steel, which cuts out two triangular legs and a central plate (spine squirt), and welds a pin-string to the bottom of the spindle, which prevents the legs from turning down when they enter the ground, and it's this stop that causes the anchor to burrow deeper when the rope is pulled.
☑️ What you need to weld the anchor
The top of the anchor has to be weighted, so you can weld an extra plate or put the lead in a special casing, and that will ensure that the anchor is properly positioned at the bottom: paws down, spindle up, without weighting, the anchor can lie on its side and drag along.
⚠️ Warning: When welding thick metals, be sure to let the seams cool gradually, wrapping the product in asbestos or sand. Sharp cooling can lead to microcracks, which, under load, will lead to breakage.
The alternative is to use a concrete load with a built-in bolt, and although this is not exactly a "unlock" in the classical sense, the smooth walls of a concrete pyramid or cone rarely cling to stones, the main thing is to make the surface as smooth as possible when pouring.
Operational rules and safety measures
Even the most perfect anchor will not work if you do not organize anchorage properly. The length of the anchor cable (shkentel) should be at least 3-4 times the depth in the parking lot. If the depth is 3 meters, then you need to poison at least 9-12 meters of the cable, which provides an angle of attack at which the anchor crashes into the ground, rather than pulling.
To anchor the boat. categorically If you pull a strong jerk (for example, if the boat turns sharply with the wind), this can lead to a boat flipping or mounting detachment. Use a tearing insert from a thin line or throw the end of the cable to the bottom of the boat, holding it with your hand or foot.
Why can't we tie the anchor to the ground?
If the anchor gets stuck at the bottom and the wind or current pulls the boat, a tight link can cause the boat to scoop up and flip. A ripped insert or loose end allows at a critical moment just to unclose your hand or break the line, saving the boat and people.
When you sample the anchor, you'll be able to move smoothly. Go to the wind or current stand, pick a cable sagging, and make a sharp jerk. If the anchor didn't come out the first time, repeat the maneuver. Don't pull the cable with engine jerks, it could damage the boat's transom.
Caring for anchoring and storage
Salt water and river silt are the main enemies of the metal anchor. After each foray, especially into salt water, the device must be thoroughly washed with fresh water. Pay special attention to hinge joints and welding sites where corrosion begins first.
To store the anchor must be completely dry. If you use a collapsible model, lubricate the moving parts with lithium lubricant or solidol. This will prevent sourcing and allow you to quickly collect the anchor at the right time, it is better to store in a separate bag or box, so that the sharp edges of the legs do not damage the cylinders of the PVC boat.
Check the condition of the anchor cable regularly, and rubbing, knots and damage to the braid is a signal for immediate replacement. Quality anchor end It must be buoyant, not absorb water and have minimal extensibility to transmit force to the anchor instantly.
The long life of an anchor depends not so much on the quality of the metal as on regular maintenance and proper operation. Freshwater washing after each fishing prolongs the life of the device by 2-3 times.
What weight anchor is needed for a PVC boat 3.2 meters?
For a boat with a length of 3.2 meters with one person and equipment (total weight about 250-300 kg) the optimal anchor weighing 3-4 kg. If you plan to fish together or on the current, the weight is better to increase to 5-6 kg. Remember that for unlocked weight can be slightly less than for classic "cats", due to better geometry.
Can I use the cat anchor as a non-couple?
A normal cat can be modified by welding a weighting or ring to the top of the spindle to shift the mounting point of the cable, but the efficiency of this rework will be lower than that of a specialized design, and it is better to buy a ready-made anchor Danforth or make its analogue from scratch.
What to do if the anchor is stuck?
Don't pull hard. Try to approach the anchor from different angles, picking and putting the cable to change the angle of thrust. Sometimes it helps to hit a wave or keel rolling. If you have a sonar, determine the type of obstacle. At the very least, if you used a burst insert, you have to sacrifice the anchor for safety.