motor boat with inflatable sides, or rib The Rigid Inflatable Boat, a unique combination of a rigid marine hull and a soft, shock-absorbing cylinder, has become the gold standard for those who value safety, seaworthiness and compactness in transportation, and unlike the classic PVC inflatable boats, the bottom is made of fiberglass or aluminum, which drastically changes the performance of the boat.
Choosing a boat is always about finding a trade-off between weight, cost and performance. RIB After standard inflatable boats fail to meet their needs for speed and comfort on the wave, it is important to immediately decide on the goals: fishing in the coastal zone, diving, rescue operations or just a family vacation.
In this article, we will discuss in detail all the nuances that you need to consider when buying. flyboard It's often better than a hard one, how to pick the right motor and what to look for when you look at the body, and a smart approach to choosing will save you a lot of problems in the future.
Design features of RIBs
The basis of any boat with inflatable sides is a rigid hull, which can be made of fiberglass or aluminum-magnesium alloy. It is this part that carries the main load and forms the hydrodynamic properties of the vessel. Fiberglass allows you to create complex contours that provide excellent ejection for planing and soft stroke, while aluminum is famous for its indestructibility and lightness.
inflatable tubes in this design act as a buffer to protect passengers from splashes and impacts on the side, they are divided into several independent compartments, which ensures buoyancy even when one of the sections is punctured. The cylinder attaches to the hull through a special shaft beam, and the quality of this connection directly affects the durability of the boat.
⚠️ Warning: When buying, be sure to check the quality of the adhesive with the timber. The detachment of the fabric in this place is a critical defect that is difficult to eliminate in the field and which can lead to flooding.
Modern models often feature transverses integrated into the hull, allowing more powerful motors to be installed without risking damage to the structure. The rigid bottom also allows for the mounting of sonars, navigation equipment and anchor winches, turning the boat into a full-fledged working tool. RIB design It was originally designed for high speed.
Why are RIBs called "unsinkable"?
The inflatable board design with multiple independent cameras and the sealed rigid hull provide a buoyancy margin that exceeds the weight of the full-load boat itself.
Advantages and disadvantages of inflatable boards
The main advantage of inflatable boats is their versatility and safety: the soft side can not be smashed into the pier, it cushions the shocks against the waves and protects people inside from injuries during sharp rolling. In addition, such boats are usually lighter than fully rigid analogues comparable size, which makes it easier to to tow and store them.
But there are some downsides to knowing about, inflatable tubes are sensitive to temperature changes and require constant pressure monitoring. In hot weather, pressure increases, and excess air must be fired, and in cold - pumped to avoid sagging and damage to the structure.
Compare the main specifications for clarity:
| Characterization | RIB (Rigid hull + board) | Inflatable boat (PVC floor) | All-metal boat |
|---|---|---|---|
| Seaworthiness | High. | Medium/Low | High. |
| Weight. | Medium. | Low. | Highly |
| Comfort on the wave | Great. | Low. | Medium (depending on the body) |
| Transportability | Requires a trailer/pressure crane | In the trunk of a car | Just the trailer. |
Although there is a need for more care for the cylinders than for the metal, RIB-operation It's often easier because it's lighter, because it doesn't require complex corrosion maintenance, and it's important to keep the tissue intact.
Choice of the material of the body: fiberglass or aluminum
When choosing a motorboat with inflatable sides, the buyer is faced with a dilemma: which body material to prefer. Fiberglass allows manufacturers to create complex hydrodynamic shapes, such as a deep keel and cheekbones, which effectively cut through the wave, which makes fiberglass RIBs more comfortable on the go and less prone to yaw.
Aluminum models, in turn, benefit in weight and strength when exposed to obstacles. Aluminum is difficult to damage with stone or logs in shallow water, it is not afraid of ultraviolet light and temperature changes in the same way as polymer resins. However, aluminum housing often has flatter contours, which can lead to hard shocks against the wave at high speed.
It's also worth considering the repairability. You can repair the glass on your own with epoxy resins and fiberglass, restoring geometry. Aluminum requires welding with argon, which is not possible in the field. Case material It determines the nature of the boat.
⚠️ Warning: Plastic glass enclosures can accumulate static electricity and require a vagus current protection system when installing electrical equipment to avoid electrochemical corrosion.
For those planning to keep the boat outdoors, aluminum may be preferred as it does not burn out and does not require sun shelter to preserve the structure of the material, unlike some types of fiberglass gelcoat.
Selection of the outboard motor
Motor power is a key parameter in determining boat dynamics. RIBs are characterized by the ability to install sufficiently powerful engines relative to the length of the hull, thanks to a rigid transom. However, it is important to keep in mind that too weak a motor will not lead the boat to plane fully loaded, and too powerful can lead to nose burrowing or instability.
When choosing, you should focus on the maximum recommended power specified by the manufacturer in the documentation. Capacity PlateExceeding this limit is not only illegal, but also dangerous. For fishing, four-stroke engines are often chosen for their efficiency and quiet running, while for sports and high-speed forays, two-stroke units are preferred for their lightness and agility.
☑️ Check before installing the engine
The important aspect is the length of the daydwoot. For motorboats with inflatable sides, the standard lower unit (Long Shaft) is usually used, but on some models with a high cylinder, a long shaft (Extra Long) may be required so that the screw does not capture air on the roll. The right engine. It provides security.
Don't forget the weight of the motor. Aluminum RIBs are more sensitive to transom overload than fiberglass, which have more inertia and buoyancy in the stern. Installing a heavy motor on a light boat can shift the center of gravity and impair driving performance.
When buying a used engine, be sure to ask the seller to show compression in the cylinders. The spread of more than 10-15% between the cylinders indicates an imminent overhaul of the engine.
Operation and care of inflatable elements
Inflatable boards require regular attention to maintain their properties. The main enemy of PVC fabric is ultraviolet and dirt. After each foray, it is recommended to wash the salt and sand with fresh water, since salt crystals combined with the sun can damage the protective lacquer layer of the fabric.
The pressure in the cylinders is critical. The underpumped side on the move starts to work like a sail, degrades handling, and wears out faster on the bends. The pumped side in the heat can burst. Use the pressure gauge for fine-tuning. The optimal pressure is usually 0.2-0.25 atm, but always check the passport of a particular model.
Keep the boat clean and dry. If the RIB is assembled, the cylinders should be slightly lowered to reduce the load on the seams and material in the folding areas, especially if the boat is stored in an unheated room in winter.
For cleaning, use only specialized PVC chemistry. Aggressive solvents, gasoline or acetone can dissolve the polyurethane coating, making the fabric sticky and unusable. Boat care prolongs her life.
Safety and equipment
A motor boat with inflatable sides is a serious craft that requires appropriate equipment. Having life jackets for each passenger is not just a requirement of GIMS, but also a necessity. Soft sides will not save a person who fell overboard at high speed.
The anchor must be of the appropriate weight and length of the anchor faline. On RIBs, due to the high sailing of the inflatable sides, the anchor must be heavier than on rigid boats of similar length. It is also recommended to have a scoop and a repair kit on board.
⚠️ Warning: Never tie an anchor falin to an arm or leg. In high winds or currents, the boat may pull sharply, causing injury or falling overboard.
Navigation lights are required for night navigation or swimming in poor visibility conditions, and inflatable boards often have special mast holders installed or lights attached directly to the cylinder with suction cups, if the design allows. Safety at sea It depends on the preparation.
Regular check of pressure in cylinders and visual inspection of fabric for scuffling - the key to safe operation of the boat with inflatable sides.
Frequently Asked Questions (FAQ)
Can I store RIB in assembled form all year round?
Yes, you can, but preferably indoors or under a quality awning. If the boat stays outside, be sure to use a cover that protects against UV rays and precipitation, and make sure that water and condensation do not accumulate inside, which can lead to mold.
What is the life of the inflatable boards?
When properly operated and stored, high-quality PVC or hypalon cylinders last 10 to 15 years or more. UV radiation and mechanical damage are the main factor in aging; regular treatment with protective compounds prolongs the life of the material.
Do I need to register RBI in GIMS?
Registration is required for vessels weighing more than 200 kg (in running order) or with an engine of more than 8 kW (about 10.88 hp). Since RIBs are often equipped with powerful engines, in most cases registration and the availability of rights of category "M" or "G" are mandatory.
How to wash the inflatable boards if they are heavily polluted?
Use warm soapy water and a soft sponge. Use special PVC cleaners to remove complex stains (oil, fuel oil). Do not use hard bristles to avoid damaging the protective layer of the fabric.