The choice of navigation equipment for inflatable watercraft is always associated with a number of technical compromises, because PVC Unlike boats, there is no permanent place to install stationary instruments, and the sides require a special approach to mounting sensors so that the material does not damage when hitting an obstacle or while anchored. The angler needs to find a balance between the functionality, weight and dimensions of the device, which should be easily transported in the bag along with the rest of the equipment.
The modern market offers many solutions, from simple single-beam devices to complex systems with a wide range of different systems. mapping But not every model is suitable for an inflatable boat, where every gram of weight and every minute of installation is important, and a mistake in choosing can cause expensive equipment to be dusted in the garage due to the complexity of installation or rapid discharge of the battery.
In this article, we will take a look at the top ten models available today and analyze their applicability in real-world inflatable conditions. specification And what's really important, and what's just a marketing ploy that doesn't affect how well you're fishing, is that a device that's right can really change the way you look for fish and explore the bottom.
Criteria for the selection of a sonar for an inflatable vessel
The primary factor in the selection of equipment is the type of sensor, as it is the one that is most at risk of damage. transducer With the possibility of quick removability or suspended options that do not require drilling cylinders. the use of cut-in sensors on inflatable sides is strongly discouraged due to the high risk of leakage and the complexity of sealing the flexible material.
The second important aspect is energy consumption and autonomy, and since small craft rarely have high-powered batteries installed, the device must be efficiently powered by standard 12-volt 7-12 Ah batteries. Scanning frequency It also plays a role: for large depths, low frequencies are needed, and for a detailed examination of the structure of the bottom and search for fish in thickets - high.
⚠️ Warning: Do not use sensors with high-power emitters near people in water or when mooring if the emitter is submerged.
The size of the head unit and the quality of the screen are the third pillar of the successful choice: the device must be readable in bright sun, have an anti-reflective coating and be spray-proof as standard. IPX7 The compactness of the case will allow you to remove the device in the backpack when you need to quickly leave the reservoir or when transported in a crowded car.
Top 10 sonars: a review of market leaders
Opens our rating of the legendary series Garmin StrikerThe sensing system, which has proven itself to be a benchmark for reliability and simplicity, features a built-in GPS receiver that not only allows you to see fish, but also saves the coordinates of catchy dots, returning to them again. The 4 and 7-inch series models are characterized by high screen brightness and intuitive interfaces that even a beginner can understand.
The following are the instruments from Lowranceparticularly the series Hook RevealTheir main advantage is technology. DownScan ImagingIt's a photographic image of the bottom, allowing you to distinguish between driftwood, grass and fish. For lovers of trophy fishing, it's an indispensable tool to help you understand where the predator is relative to the bottom structures.
- 🎣 Garmin Striker 4 The best choice for the start, proven reliability and excellent autonomy.
- 🗺️ Lowrance Hook Reveal 5 - a combination of cartography and detailed scanning of the bottom in a compact housing.
- 💧 Humminbird PiranhaMAX 4 - Budget version with legendary picture clarity and the simplest control.
- 📡 Raymarine Element 7 Advanced scanning technologies in a protected version for harsh conditions.
- 🔋 Deeper Smart Sonar A wireless solution for those who appreciate minimalism and the lack of wires.
The five leaders are universal models from Humminbird and Raymarine, which offer side-view features even in mid-price categories. side-scanning (Side Imaging) allows the boat to be “seen” from the sides up to 30-40 metres, which greatly speeds up the search for brows and dumps without having to move constantly.
⚠️ Note: When using side-scanned sonars at speeds above 10 km/h, the image may be distorted and the sensor may pop up due to hydrodynamic drag.
The other is the wireless sounder balls, such as Deeper or Practitioner 7They don't require a transducer, which is ideal for PVC boats, where every extra wire creates discomfort, but they have a limit in depth and stability of the signal in conditions of heavy chop or overgrown water.
Features of the installation of the sensor on the PVC board
Mounting the emitter on an inflatable boat requires a delicate approach to avoid damaging the cylinders and ensuring the stability of the device. The most common method is the use of a removable bracket that is attached to a switch or a slingboard. PVC When pitching or winding.
The sensor must be submerged vertically, without side blockages, otherwise the echo will go sideways rather than down. To adjust the depth of immersion, telescopic bars or simple wooden rods attached to the clamps are often used, the main thing is to ensure that there are no air bubbles under the working surface of the sensor, since they completely block the signal.
☑️ Check before the first launch
When moving against the current or strong wind, the sensor can be pushed out of the water, which leads to loss of signal, and to avoid this, you need to use weights or additional guides that will press the emitter deeper under the bottom of the boat, but do not touch the cylinders themselves to avoid rubbing.
Comparative table of specifications of popular models
For ease of choice, we have summarized the main parameters of the devices in question in a single table, and here are the key metrics that should be considered first: screen size, GPS availability, scan type and approximate battery autonomy.
| Model | Screen diagonal | GPS/GLONASS | Type of scan | Current consumption (MA) |
|---|---|---|---|---|
| Garmin Striker 4 | 4.3" | There. | Traditional | 150-200 |
| Lowrance Hook Reveal 5 | 5" | There. | DownScan + CHIRP | 250-300 |
| Humminbird PiranhaMAX 4 | 4.3" | No. | Traditional | 180-220 |
| Raymarine Element 7 | 7" | There. | SideVision + CHIRP | 400-500 |
| Deeper PRO+ 2 | Smartphone | Got it (in the ball) | CHIRP + GPS | 600 (max) |
As you can see from the table, energy consumption varies depending on the size of the screen and the complexity of the technologies used. Larger screens and side-view systems require more capacious batteries, which should be considered when planning multi-day fishing.
Why is current consumption important?
Current consumption directly affects the life of the sonar, for example, a battery with a capacity of 7 Ah (7000 mAh) at a current of 200 mA will ensure the operation of the device for about 35 hours. However, using powerful models with a current of 500 mA, the operating time will be reduced to 14 hours, and in winter the battery capacity will fall by another 20-30%.
Instrument setting and calibration
Once installed, the device requires the right setup to display reliable information. calibrationIf you have this feature in the appliance, although most current models do it automatically, it's important to set the sensitivity right: too high will add noise and arcs from the fish where there is none, and too low will hide small prey.
For PVC fishing, setting the screen refresh rate is critical. If you're drifting or slow, you can set the standard values, but if you're actively searching on the engine, you should increase the refresh rate, so you can see the fish in real time while they're floating under the sensor, not after the fact.
- 🌊 Sensitivity - adjust depending on the noise of the reservoir and depth.
- 🎨 Color palette Choose contrast schemes for a sunny day and mild for cloudy weather.
- ⚡ Pulse frequency Low for depth, high for detail in shallow water.
Don’t forget the zoom function.ZoomThis is especially useful when examining the structure of the bottom relief and looking for small anomalies where fish can stand. Using zoom in combination with a split screen gives maximum control over the situation.
Use the Echogram History feature to analyze your journey, which helps you understand where the fish were found, so you can return to that point with a fishing rod.
Nutrition and autonomous work
The issue of power supply on PVC boat is acute, as there is no room for large batteries. battery AGM or GEL type with a capacity of 12 to 20 Ah. They are safe (do not emit gases when charged in an enclosed space) and hold the load well, unlike starter car batteries.
To connect equipment, you need to use a high-quality cable with a cross section of at least 1.5 mm2 to avoid a voltage drop on long wires. All connections must be securely insulated, since salt water entering the contacts can lead to electrolysis and rapid oxidation, which will disable the device.
⚠️ Warning: Never discharge lead-acid batteries below 10.5-11 volts. Deep discharge irreversibly reduces their capacity and lifespan. Use a voltmeter to control charge.
If you are planning long expeditions, it makes sense to think about compact ones. lithium-battery (LiFePO4) They are significantly lighter than lead counterparts at the same capacity as critical for the load capacity of an inflatable boat, and have a much greater resource of charge-discharge cycles.
The optimal bundle for fishing weekend - AGM battery 12V 18Ah and high-quality pulse charger with desulphation mode.
Frequent errors in operation
One of the most common mistakes is the improper storage of the sensor in the off-season. The cable can not be reeled into a tight spiral or broken at sharp angles, as the inside can break the vein, and the signal will disappear.
Another mistake is to ignore the contamination of the sensor's working surface, so that algae, silt or oil film can drastically impair the signal quality, and regular cleaning with soft cloth and warm water will restore the device's former "vision" and allow even small details of the relief to be seen.
Many anglers also forget to update the device’s software. Manufacturers regularly release firmware that improves signal processing algorithms and fixes bugs. Checking the current version of the software and installing it through a computer or memory card is a simple procedure that can significantly improve your work. sonar.
How often do I need to update the software?
It is recommended to check the updates at least once a year, before the start of the season, and sometimes manufacturers add support for new maps or improve the work with certain types of sensors.
Conclusion and final recommendations
Choosing a PVC boat sonar is about finding the middle ground between functionality and mobility. Don't chase the most expensive models with huge screens if you're fishing in small ponds or rivers with moderate depths. Often a compact 4-5 inch device with a good GPS antenna is more than enough for a successful fishing trip.
The key is to understand the way the device works and be able to interpret the image correctly. Technology itself does not fish, it only gives you information for making decisions. Proper installation, tuning and care for the equipment will prolong its life and make every fishing more productive and interesting.
FAQ: Frequently asked questions
Can I use a sounder in winter at low temperatures?
Yes, most modern sonars are designed to work at temperatures up to -10...-20 ° C. However, LCD screens can respond to cold by slowing down the response (plates), and the battery will give off less energy. Lithium batteries tolerate cold better than lead.
Why does the sonar show a "porridge" or a double bottom?
This can be caused by several reasons: too high sensitivity, the presence of a thermocline (a layer of water with different temperatures), air bubbles under the sensor or the engine working next to the sensor, creating cavitation. Try to reduce sensitivity or change the position of the sensor.
Do you need GPS to fish in a familiar pond?
Yes, even in familiar water, GPS is useful, so you can dot the snags, pits, or fish clusters you find to get back to them within a meter of the same time, and it can track the track of movement so you don't get lost in fog or reeds.
Does the speed of the boat affect the sounder readings?
At high speeds, the sensor can pop up, trapping air, causing a loss of signal, and at high speed, it is harder to see the terrain details, and the optimal speed for scanning is 3-6 km/h.