Wind is a free and renewable energy that has driven boats for centuries, and today, any inflatable boat owner can tap into this ancient art. PVC boat with sail It opens up entirely new horizons for river and lake travel, allowing you to travel considerable distances without fuel consumption or engine noise, and it's not just a modification, it's a qualitative change in the nature of swimming, requiring an understanding of the basics of aerodynamics and hydrodynamics.
Many anglers and tourists mistakenly believe that inflatable boards are not designed to perceive the lateral load from the wind, but modern materials and design solutions allow you to create a stable and reliable sailing system. sailing-rig Unlike rigid hulls, inflatable models have their own unique features that must be taken into account when installing the mast, sling and steering.
In this article, we will discuss in detail how to choose the right vessel, what equipment schemes exist and what safety measures must be followed. cockwell And mast attachments, which are often overlooked by newcomers, and understanding these processes will help you avoid tipping over and make your sailing experience comfortable and safe.
Choice of the hull: which PVC boat is suitable for sailing
Not every inflatable boat is capable of carrying sailing weapons, and the first criterion of choice is the presence of a hard floor. Air Deck (high pressure inflatable floor) or preferably plywood or aluminum solder floor, the soft bottom will be bent under the weight of the squirt and the pressure of the mast, resulting in loss of handling and possible damage to the cylinders.
The second important thing is the width of the cockpit and the shape of the cylinders. Narrow high-sided models may have good stability, but they create a lot of wind resistance. The best choice is medium-width flat-bottom models, which provide the necessary footing area for the airborne. wickerThe presence of transom pads also plays a role, as it is to them that rigging elements and steering are often attached.
When choosing, you should pay attention to the presence of special reinforcements in the kit or the possibility of installing them. Flagship, hunter or PoseidonThey produce specialized models or sailing modifications that already have mounting locations. If you plan to remodel a conventional rowing boat, make sure that the PVC material has sufficient density (at least 750-900 g / sq.m.) to install the mounts.
The load capacity of the vessel should also be considered: the sailing equipment, the mast, the sail, the swerk, the steering wheel and the passengers create the total load. Floating It has to be redundant so that when water gets into the cockpit, the boat stays afloat, and the overloaded boat loses its driving ability and becomes dangerous even with a little excitement.
Schemes of sailing weapons for inflatable boats
There are several basic equipment schemes, each with its own advantages and disadvantages, and the most popular and easy to implement is the one-slant-sail scheme known as the "Slant Sail" scheme. sloop It's a simplified version, or just a slant sail, and it's a configuration that allows you to use the wind that blows into the side efficiently, and it's relatively easy to operate for one person.
More sophisticated options include the use of two masts or gaffe weapons, but for small inflatable boats, this is often redundant and complicates the design. The most important element of any scheme is the ability to quickly remove the sail. In case of a squall or an urgent need to switch to motor thrust, the sail must be launched in seconds without complex manipulation of the fags.
Sail material also matters. For amateur purposes, dakron or modern synthetic fabrics that are resistant to ultraviolet and water are great. You should not use heavy materials, as they weigh the structure and require a more powerful and heavier mast, which adversely affects the centering of the boat.
Why is a straight sail better than a straight sail for PVC boats?
The slanting sail allows the boat to go not only in the wind, but also at an angle to it (halfwind), which is critical for maneuvering on the river. A straight sail is effective only in favorable winds, and when the wind is in the side, the boat will be heavily tossed and demolished.
Special attention should be paid to the attachment of the mast, which can be mounted in a special glass on the paiola, attached to a transom or have a universal hinge base, the main requirement is the reliability of the attachment, since the mast is the main lever that transfers wind force to the body. Vans and pole (side and nose braces) are mandatory for masts over 3 meters high to prevent them from breaking or falling.
Installation of the squirrel and steering
Without a submarine wing called a squirrel, a boat sailing would simply drift in the wind without being able to navigate. Schwertz creates resistance to lateral demolition and allows you to convert wind force into forward motion. PVC boats most often use removable squirrel boxes or wells that are attached to the mutually supported floor.
The design of the squirrel well should ensure that the water is tight at the bottom so that water does not enter the boat, and that the squirrel can be lifted. The feather is usually made of moisture-resistant plywood, fiberglass or metal. The area of the pen is calculated based on the area of the sail and the displacement of the boat: too small a squirrel will not hold the course, and too large will create unnecessary resistance.
Inflatable boat steering is often done through a hinged transom steering wheel. It is important that the hummulus is of sufficient length for easy handling while sitting on a can. The steering mechanism must be reliable, but it can quickly remove the hummulus in case of danger or need to disembark in shallow water.
☑️ Checking the equipment before exit
There are also options with a balance steering wheel, where the axis of rotation passes through the pen, which reduces the load on the hummel. However, for small boats this is not always justified structurally. When installing a swerge, it is critical to correctly determine its mounting position relative to the center of sail, as will be discussed in the next section.
Balancing and centering: theory and practice
The most difficult step in the equipment is to achieve the right balance. Sailing center (CP) and lateral resistance center (CBS) must be in a certain ratio. If the CPU is too much forward relative to the CBS, the boat will be constantly demolished under the wind (leeward turn). If the CPU is shifted too far back, the boat will tend to lie down on the wind (bring), which can lead to a rollover.
Ideally, the CPU should be slightly ahead of the CBS (about 5-10% of the waterline length), in practice, this is achieved by trial and error: moving the mast back and forth or changing the position of the svert well. Resilience The boats are directly dependent on this balance, and if you don't align them properly, you make the boat "sluggish" or, conversely, unnecessarily sharp in the wind.
To fine-tune it, you can use a simple method: in calm water, in low winds, release the hummingbird. The boat should be slowly driven to the wind. If it turns headlong against the wind, the mast should be moved forward. If the boat falls under the wind and does not respond to the steering wheel, the mast is shifted back.
| Parameter | Influence on boat behaviour | Method of adjustment |
|---|---|---|
| The mast is too far ahead. | Boat holds course badly, blows under the wind | Move the mast backwards or the squirrel forwards |
| The mast is too behind | Boat is sharply curled, overkill is possible | Move the mast forward or the squirrel back |
| Small square of squirrel | Severe drift (demolition) to the side | Increase the area of the squirrel feather |
| Excess sailing | Strong roll, loss of control | Remove reefs or reduce the area of sail |
When you first adjust the balance, always start with a small wind, a strong wind will hide the nuances of the boat's behavior and can lead to an emergency if it is not properly centered.
Safety and behavior on the water
The PVC sailboat is a vehicle with special specifications, and disregarding safety rules is unacceptable. Unlike a motorboat, a sailboat is dependent on the elements, and the man-over-board maneuver on a sailboat is much more difficult to perform, especially alone. lifejacket It is a requirement, not a recommendation.
Weather forecasting is not desirable for inflatable vessels, winds of more than 10-12 m/s are undesirable, although trained crews can also walk in stronger winds. However, for beginners, even 5-7 m/s can be a serious test. Sharp gusts of wind (squalls) are dangerous by sudden increase in roll, so you should always keep your hand on the veil for rapid etching (weakening) of the rod.
⚠️ Warning: Never tie the scot (rope of sail control) firmly to the elements of the boat or. With a strong gust, the boat can overturn, and if you are tied to the sail, you can be dragged under the water or injured.
Also, keep in mind the temperature regime: PVC material becomes less elastic at low temperatures, and expands at high temperatures; prolonged sailing on a hot day can lead to pumping cylinders, so it is recommended to have a pressure gauge and a pump to adjust the pressure.
The basic principle of sailing safety is that you can instantly throw the wind out of the sail, and if you can't get the sail out of the way quickly, you're out of control.
Maintenance and storage of sailing equipment
Salt water, ultraviolet light and mechanical stress are the main enemies of sailing equipment. After each walk, especially on salt water, all metal elements (blocks, ducks, mast fastenings) must be washed with fresh water. Corrosion can imperceptibly destroy critical knots, leading to breakage at the most inopportune moment.
The sail fabric and slings also require maintenance, and they need to be thoroughly dried before packaging to avoid mold and decay, and it is better to keep the sails unfolded or loosely rolled, avoiding permanent crevices in the same places, which reduces the strength of the fabric.
Regularly check the condition of the seams on the cylinders in the places of attachment of the rigging. The vibration of the mast and the constant load from the cables can gradually wipe the PVC material. The use of special protective linings (heels) from a denser material will significantly prolong the life of your boat.
How to store a mast in winter?
Aluminum or duraluminium mast is best stored horizontally, suspended at several points to avoid deformation (sagging) under its own weight. Wooden masts require a dry room with a stable temperature.
Timely maintenance extends the life of your equipment and ensures your safety. Don't ignore minor defects: a rubbed shaft or cracked block can cause a serious accident. Always carry a remake on board that includes spare ropes, carbines and material for temporary repair of the sail.
Frequently Asked Questions (FAQ)
Can I put a sail on a regular rowing boat without finishing the floor?
Theoretically, it is possible, but it is highly recommended that you do not securely attach the mast and squirt without a hard floor (floorboard); installation on the inflatable floor will lead to instability, rapid wear of the material and a high risk of rollover; minimal modification in the form of laying plywood sheets on the floor is mandatory.
What is the maximum wind safe for a PVC boat of 3.2 meters?
For a boat with a length of 3.2 meters with one person, the wind up to 7-8 m / s is considered safe. When the wind is above 10 m / s, the control becomes difficult, and the risk of getting a "turtle" (complete flip) increases sharply. For two people, the stability reserve is higher, but the sailing should also be appropriate.
Do I need to register a boat with a sail in GIMS?
Under current Russian law, registration is required for boats weighing more than 200 kg or with an engine power of more than 8 kW (about 10 hp). Sailing vessels are registered regardless of weight if the sail area exceeds a certain limit (usually more than 12 sq.m., but the rules may change, it is better to clarify at the local branch). Light inflatable sailboats often fall into the category of non-registration if their weight in running order is less than 200 kg.
What to do if the boat overturned under sail?
Don't panic. PVC boats are unsinkable. Your job is to get out on an inverted tank to make the boat buoyant. Then you have to set sail, get on board, and rock the boat using your body weight to flip it back. The water from the cockpit is removed by scoop or by gravity as you move. This skill is required in shallow water.