An inflatable boat is not just a means of transportation by water, but a complex engineering structure that requires a competent approach to equipment. The question of where to anchor on a PVC boat becomes critical when you need to fix the boat in the current or in high winds. Incorrect location of the anchor point can lead not only to the loss of the anchor device, but also to the rupture of the balloon or, worse, to the tipping of the boat. Unlike metal boats, where you can weld the vessel in any convenient place, polyvinyl chloride requires strict behavior of the shipboard.
The main problem is that the anchor creates a significant tension that increases many times when you snatch from the waves, and if you attach a rope to a transom or to a soft section of the balloon without strengthening, the consequences will be fatal to the integrity of the boat. Nose part It is traditionally considered the safest place to be anchored, as it provides better resistance to the wave and wind. transceive for convenience, without realizing the risks associated with changing the alignment and handling.
In this article, we will discuss in detail all possible options for installing an anchor system, analyze the pros and cons of each method and give a step-by-step instruction on installing rim bolts. inflatable tubes cannot be used as the main mounting point without special protectionAnd what are the alternatives for different models of inflatable vessels, and water safety starts with the proper preparation of equipment on shore.
Physics of the process: why the mounting site changes everything
To understand where the anchor anchor anchor point should be, you need to look at the loading behavior of the boat, and when the vessel is facing the wave, it cuts the water, and the load is distributed evenly along the diametric plane. nose-mount It's perfect because the anchor rope continues the axis of symmetry of the boat, and if you anchor it on the side or the stern, you get a torque that can turn the boat side to the wave, which can lead to water flooding and loss of stability.
When attached to the transom, the situation changes dramatically, the boat stands aft to the wind, which is an unnatural position for most PVC models. Keel boats In this position, they start to prowl, and the flat bottom can cause a strong rolling side, and the weight of the anchor on the transom shifts the center of gravity, which, if you have a passenger on the nose, creates a swing effect, reducing comfort and safety.
It's important to consider the material to which the attachment takes place, because polyvinyl chloride has a certain elasticity, and if the anchor is jerked sharply, the soft side can deform, which will cause the force point to shift, which is why the use of special equipment is so important. anchor-royme With wide washers or reinforced slats, it is a must, and simply tying a rope to a carry handle or a D-ring for mooring is not acceptable when working with heavy anchors.
Nasal fastening: safety classics
The traditional and most recommended place for the anchor ditch is the bow of the balloon, and this is where the force application point is located, which allows the boat to navigate the current correctly. anchor-boltIt's a slug or a slap in the standard amplification, and it's used in many modern models, such as: Badger or FlagshipThis place is already provided by the design and reinforced with an additional layer of PVC.
The advantage of the bow mount is that the boat is less prone to lateral rolling, and passengers are more comfortable maintaining balance, and the anchor rope is not confused under the feet and does not interfere with the work with the boat. boat-engineBut there's a caveat: to get anchor, you'll either have to pull the boat over the thunder or get on your nose, which can be uncomfortable in high winds or deep water.
⚠️ Attention: When installing a bolt on the nose, make sure that there are no internal bulkheads or inflatable elements under the mounting point that can be damaged under heavy tension. Use only specialized bolts with a wide support washer to distribute the load.
For installation in the nose, often used rim bolts with a diameter of 8-10 mm. Smaller diameter may not withstand the load, and a larger will create unnecessary stress in the fabric. The installation process requires careful sealing of the passage of the bolt through the cylinder to prevent injury to the material and loss of air. If your model is not standard reinforcement, it is better to contact the workshop for pasting. kit PVC fabric.
Before drilling or installing a bolt, be sure to inflate the boat to working pressure, this will accurately assess the tension of the fabric and avoid installation errors that may occur after descent into the water.
Fixing on the transom: convenience or risk?
Many anglers prefer to anchor on the transom, because it's easy to drive, because it's easier to control the position of the anchor tile when you're at the motor, and if you need to quickly choose the anchor, but this approach has serious shortcomings in terms of hydrodynamics and safety. The boat stern to the wave becomes less stable, and the risk of water flooding through the side or trawler increases many times.
If you do decide to use the transom option, you need to make sure that the transom itself will withstand the load. In inflatable boats, the transmolant can be both rigid (plywood in the case) and inflatable. transmesse anchoring is strictly prohibited without the use of special adapters or remote structures, since the soft wall is not able to withstand the jerk of an anchor weighing 3-5 kg or more.
For hard trans trans, you often use temporary solutions, like throwing a phala over the side and tying it to the rift on the opposite cylinder, creating diagonal tension. But these are only half-measures. The right thing to do is to put a separate rump bolt on the hard part of the transom or use a special one. anchor-learThis will allow you to maintain control from the stern, but minimizes the risks to the design of the boat.
- 🚩 The risk of tipping when fastening on the stern is higher by 40% due to sailing and the wrong angle of meeting the wave.
- 🚩 The load on the transom plate should be strictly vertical or close to it, oblique jerks can loosen the engine mounts.
- 🚩 The use of transom fastening requires constant monitoring so that the anchor rope does not fall under the screw of the working motor.
Technology of installing a rim bolt yourself
If your boat does not have a regular anchoring space, you can organize it yourself, observing the technology of working with PVC. To do this, you will need a drill, a special glue for PVC, a rim bolt of the required diameter and, preferably, a piece of reinforced fabric for reinforcement. Before starting work, determine the exact location of the installation, given that it should be on a flat area of the cylinder, away from the seams and valves.
The process starts with marking and degreasing the surface. If you reinforce the installation site, you first stick a patch of PVC fabric, then it warms up, and only after it has completely cooled down, you drill. It's important to use a drill that corresponds to the diameter of the bolt to eliminate the backlash. The bolt thread should not have sharp edges that could cut the fabric from the inside when vibrating.
⚠️ Warning: Never use conventional metal washers without rubber pads. Metal will RUB against PVC when the boat moves, which will quickly lead to thinning and tearing of the material. Use wide plastic or rubberized washers.
☑️ Tools for installing a rim bolt
Once the bolt is installed, you need to do a static load test. You don't have to get on the water and check the anchor. Try to create a tension equivalent to the weight of the anchor plus the safety margin, and inspect the attachment site in a few hours. The absence of deformation of the fabric around the washer and the absence of air leakage indicate a good installation. sealant polyurethane-based, applying it with a thin layer around the base of the bolt.
Comparison of fastening methods and selection of equipment
The choice of the method of attachment depends not only on the design of the boat, but also on the operating conditions. For a fast-flowing river, the nose mount is critical, whereas on a calm lake variation is acceptable. Also the weight of the anchor plays a role: light anchors (up to 2 kg) are less stringent than for heavy cat anchors or ploughboats used at great depths.
The table below compares the main specifications of the various anchor anchoring methods on PVC boats:
| Parameter | Nasal mount | Trans anchorage | Onboard anchorage (lear) |
|---|---|---|---|
| Boat stability | Tall (nose on the wave) | Low (sweetened by wave) | Medium (depends on the wind) |
| Security | Maximum | It requires control. | Medium |
| Management convenience | Low (to get up) | High (all at hand) | Average |
| Risk to the design | Minimum | High (per transom) | Low. |
The choice of anchor is worth special attention. For PVC boats, cat anchors are optimal, which are easy to fold and do not have sharp protruding parts that can damage the balloon when lifting. Danforth anchors or plows are also effective but require careful handling. The weight of the anchor is selected at the rate of 1 kg per 1 meter of boat length, but for inflatable boats it is better to take an anchor with a reserve of holding power, but less weight, using the length of the phalt for compensation.
How to calculate the length of the anchor shaft?
The length of the anchor rope should be at least 3-4 depths in the parking lot. For PVC boats, it is optimal to use a synthetic cord with a diameter of 6-8 mm, which does not absorb water and does not rot. At the end of the phalan, a vertebrae is required so that the rope does not twist around the anchor.
Alternative solutions and anchor boxes
The modern industry offers solutions that allow you to not attach the anchor to the cylinders at all. anchor-boxIn this case, the anchor rope passes through a special roller or hole in the sides of the box, and the anchor itself lies inside, which protects passengers from contact with a wet and dirty anchor, and also eliminates the risk of damage to the balloon.
The anchor box can be fixed or removable. Fixed models are attached to the pit floor, which requires drilling the floor, but provides high rigidity of the structure. Removable versions are simply placed on the floor and fixed by their weight or belts. The main requirement for this method is that there is a reliable attachment for the phale itself inside the boat, so that when the anchor pulls, the entire box is not dragged overboard.
Another option is the use of anchor-leaers The anchor frame in this system is a sliding element or has multiple fixing points, which allows you to move the point of application of force, choosing the optimal angle depending on the direction of wind and current, but such a system is more difficult to install and requires reliable supports around the perimeter of the boat.
⚠️ Attention: When using an anchor box, make sure that the rope outlet has smooth edges. Any roughness will RUB the synthetic crease, which can cause it to break at the most inopportune moment. Regularly check the condition of the rope at the exit point.
The use of a specialized anchor box inside the boat is the safest and most civilized way of storing and using the anchor, completely eliminating the contact of metal with PVC.
Can you tie the anchor just to the carry handle?
Not recommended. PVC boat carry handles are designed for short-term effort when carrying an empty or light boat. They are not designed for the dynamic loads that arise when the anchor is running (snap from the waves). Using the handle as a mounting point is guaranteed to cause it to be detached along with a piece of balloon, which will create an emergency situation on the water.
What is the optimal weight for a 3.2 meter long boat?
For a PVC boat with a length of 3.2 meters, the optimal is an anchor weighing 3-4 kg. However, it is not the weight that is more important than the holding force. A light anchor cat with long legs can hold better than a heavy pancake. The main rule is that the anchor must confidently hold the boat in the wind to 5-7 m / s. If the anchor crawls, you need to increase not the weight, but the length of the fail or change the type of soil / anchor.
Do I need to lubricate the bolt thread before installation?
Yes, it is needed. The bolt and nut threads should be lubricated with lithium lubricant or a special compound to prevent corrosion and acidification, and it will also facilitate dismantling in the future if replacement of the element is required. It is important that the lubricant does not contain aggressive components that destroy rubber or the adhesive used in installation.
What to do if the anchor is stuck at the bottom?
If the anchor is stuck, don't pull the boat sharply with the engine, it can damage the transom or the cylinder. Try to choose a slack of the trench, get as close as possible to the anchor (creating a vertical) and make a sharp but short jump up. If possible, use an anchor vent mechanism (buyrep), which allows you to release the anchor by pulling a special rope from the opposite side.
How to keep an anchor rope so it does not get confused?
The best way to store it is to use a coil or a special bag, the rope should be laid with rings or winding without overlapping. Before getting on the water, always check whether the fold is freely unwound. A tangled rope can cause the anchor to be lost or, in the worst case, wind up on the engine screw, which will lead to the breakdown of the lower unit.