A swimming aid, whether it is a compact single-seater model for fishing or a roomy one catamaranIt's always ergonomically equipped. Many inflatable boat owners are thinking about upgrading, and one of the first things that gets attention is a metal arch mounted on a transom, which is often referred to simply as a "targa," and it changes the functionality of a boat on the water.
The main purpose of this design is to move the center of gravity and free up useful space inside the cockpit, and instead of cluttering the bottom with drawers, engines and mounts, you take some of the equipment up, and it's not just a matter of aesthetics, it's a critical aspect. safety The comfort of the crew during the long stay on the water.
In this article, we will discuss in detail what tasks this part solves, why it is needed for serious anglers and travelers, as well as the nuances of the choice of materials and installation. arch This will help you avoid tuning errors and make your boat more efficient.
The main purpose of the transom arch
The primary function of the target is to ensure reliable attachment of the suspended boat-engineUnlike the standard transo, which is part of an inflatable cylinder and can deform under the weight of a heavy engine, the metal arch takes the load on itself, which is especially true when using motors over 5 hp, when vibrations and weight can damage the soft transometer.
It also provides an ideal platform for the installation of navigation equipment, and it is convenient to place it on the horizontal bar. sonarThe screen is always in front of the steering wheel, allowing you to control depth and coordinates without leaning towards the side or being distracted from the control of the vessel.
And the important thing to note is that the arch makes it much easier to lift the engine out of the water, so you don't have to bend over the side every time, or get your hands dirty in water and fuel to start the engine. lower unit for a handle fixed at a comfortable height.
Targa takes over the weight of the motor, protecting the boat's soft transax from rupture and deformation under load.
Improved ergonomics and weight distribution
Right. centre-up When the heavy motor and battery are on the transom or in the stern of the cockpit, the bow of the boat can be snarled, especially in planing, and the arch allows the engine to be carried further into the stern and higher, which changes the boat's trim for the better.
The liberation of inner space is another powerful argument. PVC boats Every square centimeter by weight of gold, and by moving the mounts of the instrumentation and motor upwards, you get extra space for your legs, gear, or seating, which is especially important for models up to 3.5 meters long.
And also, the safety of the people in the boat, because the metal arc acts as a handrail, and when you're abruptly maneuvering or swaying the water, you can always grab the structure to keep your balance, and that reduces the risk of falling overboard or getting injured on the hard parts of the motor.
- 🚤 Removing the engine outside the cockpit improves visibility and reduces noise levels for passengers.
- ⚖️ Optimal mass distribution prevents the boat’s nose from burying in the wave.
- 🛡️ The metal frame protects the soft elements of the inflatable side from contact with the screw.
Materials of manufacture and design features
The choice of material for the target directly affects the life of the structure and its weight. stainless steelIt is highly durable, does not corrosion in salt water and withstands considerable mechanical stress, but the weight of such an arch can be significant, which is important for light inflatable vessels.
The alternative is the aviation aluminumThis material is much lighter than steel, which allows you to not overload the transom. Aluminum alloys of the D16T series are often used in shipbuilding due to the combination of lightness and strength. To protect against oxidation, such structures are usually anodized or coated with special polymer compositions.
Design arches can be welded or prefabricated. Prefabricated models made of pipes and fittings are convenient to transport in disassembled form, but they require regular checks of joints for backlashes. Welded monolithic structures are more reliable, but take up more space when stored and transported in the trunk of the car.
⚠️ Warning: When buying an aluminum arch, make sure that all fasteners are also made of stainless materials. Using conventional steel for bolts and nuts will result in rapid electrochemical corrosion at the point of contact with aluminum.
Comparison of specifications of materials for targeting
To make a final decision, you need to conduct a comparative analysis of the main parameters. Below is a table that will help you compare the properties of different materials and choose the best option for your type of boat.
| Parameter | Stainless steel | Aluminum alloy | Painted steel |
|---|---|---|---|
| Structure weight | Highly | Low. | Medium/High |
| Corrosion resistance | Great. | Good (at defense) | Medium (depending on the paint) |
| Strength on fracture | Very high. | High. | High. |
| Cost | High. | Medium/High | Low. |
| Difficulty of installation | Medium | Low. | Medium |
As you can see from the comparison, stainless-make It is the leader in longevity, but loses weight. aluminum Painted steel is a budget option that requires constant monitoring of the integrity of the paintwork.
Effect of the galvanic metal pair
If you're pairing aluminum targa with a steel transom or using steel bolts, be sure to use insulating gaskets and lubricants. In seawater, these compounds break down in one season.
Instructions for the installation of the transom arc
The installation of the arch requires precision and adherence to technology, because safety depends on it. Before starting work, you need to make sure that the transom of the boat will withstand the additional loads. cross-plate from plywood or plastic to distribute pressure.
The installation process begins with the mounting points marking. It is important to keep the engine exactly relative to the diametric plane of the boat. The fasteners must be fitted with a margin of safety, usually using bolts with a diameter of at least 8 mm.
☑️ Pre-installing check
After the main racks are fixed, the upper bar is installed. It is recommended that all threaded connections be treated with a fixing composition so that the vibration during the operation of the engine does not weaken the puff. The final step is to check the reliability of the attachment under load.
⚠️ Warning: Do not use screws or small diameter bolts to attach the transom tags. The vibration of the motor quickly shakes such fasteners, which can lead to loss of the engine on the go.
Additional equipment and tuning
Once the basic design has been installed, many owners don't stop there. Targa provides an excellent base for further development. tuningIt can be fitted with running lights that are higher and more visible to other boatmasters, which is especially important for evening fishing.
It is also popular to install a tent or ride-overThe arch frame is ideal for mounting a soft roof that protects against the scorching sun or sudden rain, which makes the boat a more comfortable place to relax, allowing you to spend whole days on the water without discomfort.
For night fishing enthusiasts, it will be important to install an LED tape or a spotlight on a horizontal bar. The light directed downwards illuminates the cockpit and the water on the side, making it easier to work with tackles and catch fish. The main thing is to connect the wiring correctly using moisture-proof connectors.
To fasten the awning, use special clamps-"crabs" or clamps with a rubber pad, so as not to damage the anodized aluminum layer and prevent the tissue from slipping.
Rules of operation and maintenance of the structure
Even the best quality. metal-arch After each outing, especially if the swim was on a salty water body, the structure needs to be rinsed with fresh water, which will wash away the residue of salt, which is the main catalyst for corrosion.
Every once in a while, you should check the tightening of all bolt connections. The vibration that occurs when the engine is running and you're moving along the wave tends to gradually release the thread. counternuts or a thread lock at each assembly to minimize risks.
When storing the boat assembled or transporting it on a trailer, it is recommended to remove the targa, if the design allows, this will reduce sailing when driving on the highway and reduce the load on the transom when hitting road bumps. If you can not remove, make sure that the fixation is reliable.
⚠️ Warning: When washing arches under high pressure (kercher), be careful with joints and welds. A jet of water under pressure can drive moisture inside hollow pipes or under a layer of paint, causing hidden corrosion.
Final recommendations for selection
When choosing a targa, start from the real needs and specifications of your boat. For a lightweight inflatable boat with a 5 hp engine, a massive steel structure will be an excess, weighting the stern. fishing-boat A lightweight aluminum arc may not be able to withstand the weight of a massive sonar and a powerful motor.
Pay attention to the quality of surface treatment. The absence of sharp edges, burrs and welding inflows is a sign of good factory work. Sharp edges can damage not only clothing, but the boat itself when you move carelessly.
Investing in a quality transom arch pays off with increased comfort and safety. It's a tuning element that, once installed, makes you wonder how you've done without it before. When properly selected and installed, the targa turns a regular boat into a functional tool to achieve your goals on the water.
Quality targa is a balance between the strength of the material, the weight of the structure and the functionality required for your boat use scenario.
Frequently Asked Questions (FAQ)
Can I set the targa on the boat without a hard transom?
The soft transom can only be installed with a special transom plate that distributes the load, and without a rigid attachment base, PVC material can be broken through under the weight of the motor.
Does the targa affect the speed of the boat?
The arch itself does not affect speed because it is above water, but taking the heavy motor further into the stern can improve the plane output and stabilize the stroke, which indirectly has a positive impact on the speed performance.
Do I need to remove the targa when washing a boat under high pressure?
It is advisable to remove or close the anchorages carefully, and pressure water can penetrate into metal microcracks or under fasteners, which will accelerate corrosion in hard-to-reach places.
Will universal targa be suitable for any motor?
Most of the ranges have standard mounts that are compatible with most outboard motors, but for very powerful engines (over 15-20 hp), it is recommended to use reinforced models designed for specific weight and vibration.
How to protect aluminum targa from corrosion?
Use anodized products, wash them regularly with fresh water and treat them with protective metal polishes. Avoid contact of aluminum with copper or untreated steel.