Long exposure to the scorching sun on the water is not only uncomfortable, it is a real health hazard, open skin burns quickly, and lack of shade leads to heat stroke, which can ruin even the best fishing or family vacation. sun-trap It is not just an accessory, but a necessary element of equipment for any modern water motor, providing safety and comfort.
Unlike fixed canopies on the shore, boat awnings must have specific specifications: lightness, aerodynamics and resistance to aggressive aquatic environment. The market offers many ready-made solutions, but often they either do not fit the dimensions of a particular model or are unreasonably expensive.
In this article, we will discuss in detail the types of structures, choose the optimal materials for the frame and fabric, and also consider the step-by-step manufacturing process. You will learn how to correctly calculate the wind load and fix the elements so that they do not interfere with the management of the vessel. canopy It will turn your boat into a full oasis of coolness.
Selection of material for the awning: Oxford, PVC or tarpaulin?
The first and most important step is the choice of fabric, which depends on how effectively the awning will protect against ultraviolet light and how long it will last in constant humidity. Modern materials are radically different from the classic tarpaulin, which, despite its naturalness, quickly gets wet, heavier and rotten.
The most popular choice for homemade awnings is fabric Oxford (Oxford) It's a synthetic material that doesn't absorb water, dries quickly and has high tensile strength, and the density of the tissue is measured in den (den) or T (tex), and for boat awnings, the best choice is 450T to 600T.
⚠️ Attention: Oxford PU-labeled fabric is more resilient and frost-resistant, but PVC coating is better at protecting against sunburn and aggressive sea salt. PU is good for freshwater, PVC is only good for the sea.
The alternative is a specialized cloth (like Sunbrella), which breathes, preventing condensation from forming under the awning, but costs significantly more. A budget option might be a dense PVC banner, but it is less aesthetically pleasing and heavier to install. When choosing a color, remember that light colors reflect the sun's rays better, keeping cool under the canopy, while dark colors heat up faster.
Frame design: pipes, arcs or ready-made racks
The basis of any tent is its frame, it must be strong enough to withstand wind gusts, but also light enough not to disturb the centering and stability of the boat. Most often, aluminum or steel pipes are used to make load-bearing elements. Aluminum is preferable because of its low weight and corrosion resistance, although steel is cheaper and more affordable.
There are several basic types of designs. Tent roof It is installed on four vertical racks and is suitable for parking or slow movement. Tent-transformer It has a folding structure that can be quickly removed into a case. biomini folding awnings on the arcs, installed on the transom or nose.
The best way to connect pipes is to use fittings or welding if the frame is stationary. If you're making a collapsible structure, pay attention to the quality of the joints so they don't fall out. It's important to consider dismantling or folding if you plan to keep the boat in a low-ceiling garage or on a trailer.
Use pipes with a diameter of at least 20-25 mm for racks. A thin profile can develop in high winds or hit a wave, which will lead to damage to the awning and injuries.
Calculation of dimensions and drawing
Before cutting pipes and sewing fabric, you need to create an accurate drawing. Mistakes at this stage can lead to the awning being pulled too weakly (will sail and clap) or too hard (shatter the seam). Measure the size of the usable area to be closed by adding allowances to the overhangs.
The optimal height of the awning over the head of a sitting person is 160-180 cm If you make it lower, it will be uncomfortable, higher - the sailing will increase. The length of the overhangs on the sides should be sufficient to cover passengers from the oblique rays of the sun, usually 40-60 cm from the side. The front and rear overhangs make shorter, about 30 cm.
When designing, take into account the location sniffle The awning should not interfere with the passage to the nose or control the engine. If the boat is used for trolling, make sure that the frame does not overlap the view and does not catch lines. It is better to do the drawing on a 1:10 scale on millimeter paper or in a CAD program.
Formula for calculating tissue area
To calculate the area of the fabric, add 15-20 cm to the length and width of the frame on the turn and fastener. If the awning is pitched, the area increases by a factor of 1.15-1.2 depending on the angle of inclination.
Step by step: Assembly of the frame yourself
The assembly process starts with the preparation of the pipes, and if you use steel, you have to clean them, degrease them, and coat them with a primer on metal, and then paint them with enamel for outdoor work, and the aluminum pipes are enough to wash and clean the joints.
Then there's the slicing of the elements according to the drawing. The vertical racks are placed in special glasses (sleeves) that are welded to the sides of the boat or attached with bolts. Horizontal bars connect the racks to form a frame. All angles must be straight or correspond to the design angle of inclination.
To ensure rigidity, diagonal slanting or tension cables are recommended, which is especially important for large awnings, the elements are fastened together using bolt joints or welding, and after assembly, the frame is applied to the boat to test the geometry.
☑️ Frame assembly checklist
Sewing and installation of awning fabric
Once the frame is ready, it is measured for sewing the case, the fabric is painted taking into account the sutures (1.5-2 cm), sewing is better done on a sewing machine that can sew thick materials using laussan or capron threads (No. 40 and above), which do not rot in water.
The perimeter of the awning is a gateway, which inserts a strong cord or cable, which will allow you to evenly pull the fabric and avoid deformation. In the corners and in the middle of the sides are sewn luvers (metal rings) to attach to the frame. The distance between the luvers should not exceed 50 cm.
The finished fabric is placed on the frame and fixed with laces or special belts with fastexes. The tension should be uniform so that the fabric does not sag and does not collect into folds where water can accumulate. A properly installed awning should be stretched like a drum.
⚠️ Warning: Never leave your awning stretched for long periods of time unattended in stormy weather. In high winds, the sailing of the awning can overturn a light boat or break the frame. Always use storm delays or remove the awning.
Comparison of materials for frame and canvas
To make an informed decision when choosing components, it is convenient to use a comparative table, which will help to compare the specifications of different materials on key parameters that affect durability and usability.
| Materials | Weight. | Resistance to UV | Waterproofness | Term of service |
|---|---|---|---|---|
| Oxford 450T (PU) | Light. | Medium | High. | 3-5 years |
| Oxford 600T (PVC) | Medium. | High. | Absolute. | 5-7 years |
| Acrylic (Sunbrella) | Medium. | Very high. | Water-repellent | 7-10 years |
| PVC Banner | Heavy. | High. | Absolute. | 5-8 years |
As can be seen from the table, the universal solution for most water motors is Oxford 600T with PVC coatingIt combines reasonable price, excellent appearance and high protective properties, and acrylic fabrics are worth choosing for those who are willing to overpay for premium appearance and maximum ventilation.
The choice of material directly affects the microclimate under the tent. PVC-coated synthetics create a greenhouse, so ventilation is required, and acrylic lets air through, but it keeps rain worse.
Tent care and winter storage
To keep the awning lasting, it needs to be properly cared for. After each trip, especially if there was rain or splashing salt water, it is advisable to rinse the awning with fresh water and let it dry. Dirt and dust left on the fabric act as an abrasive, destroying the protective layer.
Before winter storage, the awning should be thoroughly washed with soft detergents, completely dried and treated with water repellent impregnation, and the product should be stored in a rolled-up form in a dry, ventilated room, away from rodents that can chew the fabric.
Check the joints and mounts regularly, and if you notice any rust or threads on the loovers, repair them immediately, and you can put a small hole in a PVC glue or patch the same material, and you can keep your awning alive for a few seasons.
Frequently Asked Questions (FAQ)
Can a boat awning be used as a canopy on the shore?
Technically, you can, if you can take the frame off the boat and put it on the supports on land, but the standard mounts (glasses) are designed for the side. To use on the shore, you need to make separate removable racks or use universal supports. Also note that on the shore, the wind load on the awning will be higher.
What is the minimum angle of inclination needed for water flow?
To run rainwater efficiently, the awning surface must be at least 10 to 15 degrees incline, and if the awning is flat, the water will accumulate in the center, bending the fabric and creating a dangerous load, and it is better to make the awning gable or give it an arched shape.
Do I need to remove the awning when the boat is moving for an outboard motor?
Depending on the design. Stationary roof awnings ("houses") when moving create huge air resistance and can overturn the boat, they need to be removed. Foldable bimini awnings mounted on a transom are designed for use on the go, but the speed should not exceed 25-30 km / h to avoid sailing effect.
How to replace the lens if there is no special tool?
If you don't have a lasher, you can use reinforced sling loops sewn onto the fabric, or plastic clip latchers, and there are also self-puncture lavers that are installed by simple compression, but they are less reliable than open metal ones.
How to remove the smell of dampness from the tent?
The smell of dampness indicates the beginning of mold development. The awning should be removed, spread on a flat surface and thoroughly washed with a solution of water with vinegar or a special means to remove mold from tissues. After drying, be sure to treat the fabric with antifungal impregnation.