Choosing the right anchor for a PVC boat is not just a matter of convenience, it is a guarantee of your safety on the water. An improperly chosen device may not keep the boat in the wind or current, which will lead to demolition in shallow water, rocks or oncoming boats. Inflatable boat owners often face the dilemma of taking an anchor that is too heavy to damage the boards, or too light one that is useless in a storm.
In this article, we will analyze all the nuances, from the calculation of the mass to the choice of design, so that you can confidently anchor in any conditions. Load capacity And the type of bottom is crucial, and we've prepared a detailed table and guidelines to help you avoid mistakes when you're packing your gear.
Basic selection criteria
The first thing to pay attention to is displacement Many newcomers mistakenly rely on the length of the hull, ignoring the width and height of the sides, which greatly affect the sailing. The higher the side and the larger the area covered by the wind, the more likely the boat will be to tear down even in low winds.
The second critical factor is the type of bottom in the waters where you plan to fish or relax, and the muddy bottom needs some designs, and the rocky bottom needs a lot of different designs. Engagement The anchor paw must match the relief, otherwise it will simply slide over the surface.
It's also important to consider the material that anchors are made of: steel, galvanized or stainless, will last longer but have more weight. Aluminum alloys are lighter, but can deform when hitting rocks. Galvanic corrosion The enemy of any metal in salt water, so the choice of coating is important.
⚠️ Warning: Never tie the anchor end (footlin) directly to the ditch on the balloon. If a sharp jerk or anchor gets stuck, this can lead to a boat breakout or a breakaway of the fry.
Calculation of the weight of the anchor for the boat
There is a classic formula that calculates the minimum mass of an anchor to hold a boat safely, which states that the weight of an anchor should be 10% of the displacement of a boat, but for inflatable boats that have low draught and high sailing, this figure is often increased.
For calm water and weak winds, you can use a factor of 0.08 displacement, but if you plan to go out on currents or in windy weather, the ratio should be increased to 0.12-0.15. Sailing PVC boats are significantly higher than rigid hulls of similar size.
⚠️ Warning: Using an anchor too heavy on a small PVC boat is dangerous. When lifting a heavy load from deep, the boat can lose stability and roll over.
For quick assessment, a simplified method based on the length of the case can be used, although it is less accurate than the displacement calculation. Below is a table that will help you navigate the initial values.
| Boat length (m) | Min. anchor weight (kg) | Optimal weight (kg) | Typical displacement (kg) |
|---|---|---|---|
| 3.0 | 3.0 | 4.0 - 5.0 | 300 - 400 |
| 3.0 - 3.6 | 4.0 | 5.0 - 6.0 | 400 - 600 |
| 3.6 - 4.2 | 5.0 | 6.0 - 8.0 | 600 - 900 |
| 4.2 - 5.0 | 7.0 | 8.0 - 10.0 | 900 - 1200 |
| more than 5.0 | 10.0 | 12.0+ | 1200+ |
Types of anchors for inflatable boats
The market offers many designs, but not all are suitable for PVC boats. cat anchor.. Its paws fold, allowing it to be compactly stored in a bag or a handbag. The cat is versatile, but on a very hard clay bottom, its paws can slide.
Denforth and its flat anchor counterparts have excellent grip on sand and silt, and they work by burying their paws in the ground under thrust, but on a rocky bottom they often break or fail to catch. Gravitational Anchors (just cargo) work everywhere, but require a lot of mass to hold.
- 🎣 Cat anchor: It is ideal for transportation, suitable for most types of bottom, except for very hard.
- ⚓ Denforth anchor: The record holder for holding power on soft ground, but is afraid of stones.
- 🪨 Cargo anchor: simple construction without paws, holds at the expense of weight, good on stones, but heavy.
The secret of folding anchors
Folding models often have movable elements that can jam with sand or rust. After each fishing, be sure to wash the mechanism with fresh water and lubricate it with silicone lubrication so that it does not fail at the right time.
Table of conformity of weight and type of bottom
The choice of anchor type depends on the ground. If you often change fishing places, you should have a versatile option or a combined cargo. The table below gives recommendations for choosing the type of anchor depending on the conditions.
| Type of bottom | Recommended type of anchor | Features of operation |
| :--- | :--- | :--- |
| Sand, Il | Denforth, Plug | High engagement, paws deep |
| Clay | Cat, Admiralty | Needs sharp paws to cut through a hard layer |
| Rocks, shell | Cargo, Cat (with caution) | Risk of getting stuck, need safety margin |
| Algae, grass | Cargo, Long-Stock Anchor | Normal anchors get tangled in grass |
It is important to understand that retainer It depends not only on the weight, but also on the length of the anchor cable, and the rule is that the cable should be 3-5 times the depth of the parking lot, which provides a horizontal force on the anchor, allowing the paws to burrow, rather than pulling upwards.
Using a cable that is too short is a common mistake, and in this case, the force vector is pointed upwards, and the anchor is simply pulled out of the ground as the wind strengthens. Rope It must have sufficient room for maneuver.
Materials of manufacture and their features
When choosing an anchor for a PVC boat, weight is one of the key parameters: Steel anchors are strong and cheap, but heavy and rust. Galvanized steel It's a middle ground, it's corrosion-proof, it costs a lot of money. Stainless steel is perfect for salt water, but it's very expensive.
Aluminum alloys can reduce anchor weight by 30 to 40 percent compared to steel at the same size, and this is true for small boats where every kilogram counts, but aluminum is less durable at kink. Homemade anchors of concrete or lead They are often used by fishermen, but they are bulky and can damage the bottom of the boat when loaded sloppy.
To protect the bottom of the PVC boat from the sharp edges of the metal anchor, use a special case of dense fabric or a rubber mat in which you can pack the anchor before loading.
- 🛡️ Steel: high strength, affordable price, susceptibility to corrosion without coating.
- ✨ Aluminum: Lightweight, not rusting, but less durable and more expensive steel.
- 🏗️ Cast iron: cheap, very heavy for its volume, quickly rusts and crumbles.
Rules for safe installation and operation
Safety on the water begins with the correct organization of the anchor site. Anchor end The rope should not be attached to the cylinder itself, but on a special fry-handle welded to the transom, or passed through a special line stretched along the side, which will distribute the load.
Always carry a knife with a floating blade or an easily available tool to cut the cable. If the anchor is firmly entrenched between the stones and the wind is intensifying, the only way out is to release the anchor so as not to overturn the boat. buyrep (a line going to the anchor axe) helps to free the anchor stuck, but on small PVC boats it is rarely used due to the complexity of the design.
☑️ Checking before getting on the water
⚠️ Warning: Never wind the anchor cable on your arm or body when lifting the anchor, and if you jerk or move a boat, it can cause serious injuries or even a limb to be torn off.
Frequently Asked Questions (FAQ)
Can you use a heavy load (stone, pancake) instead of an anchor?
Yes, you can, but the effectiveness of such an anchor would be low, the cargo without paws holds only by its own weight, to keep the boat in the wind, its mass must be much greater than that of an anchor with paws, and the sharp edges of the cargo can damage the boat.
How long should the anchor cable be?
The optimal length of the cable should be at least 3 depths in the parking lot, or better 5 lengths. For example, at a depth of 3 meters, the cable should be from 9 to 15 meters long, which will ensure the correct angle of attack of the anchor on the ground.
How do you release a stuck anchor?
Try to change the direction of the thrust by going around the anchor on the boat from different sides. If you have a bayrep, pull it. In extreme cases, if the anchor is not sorry, you can try to shake it with jerks. If nothing helps, you have to cut the cable.
Do I need an anchor for a boat 2.8 meters long?
Yes, even for small boats, an anchor is necessary, and it is not only necessary for fishing, but also for a safe stop in case of engine failure or a sharp deterioration in the weather, for such a boat, an anchor weighing 3-4 kg is enough.
The main conclusion: for a PVC boat, it is not the maximum weight of the anchor that matters, but its correct location, reliable attachment of the cable and compliance with the type of bottom. Safety above all else.