The modern boating market offers a wide range of watercraft, and a plastic bottom boat occupies a special, often underrated place in it. Many novice water-engines, when choosing between classic PVC, aluminum Kazank or composite, often pass by. plasticBut polypropylene and fiberglass technology have gone a long way, making it possible to build reliable, lightweight and durable vessels for serious operation on all types of water bodies.
Unlike inflatables, the hard bottom provides stability and the ability to install powerful motors without the risk of damaging the cylinders on the bottom bumps, while, compared to metal, composite materials have unique specifications of noise insulation and thermal conductivity, which is critical for comfortable fishing in the cold season. composite-boat It is becoming an increasingly popular choice among professionals who value the balance between weight and strength.
In this article, we will discuss in detail the design features of such boats, annesthetic their strengths and weaknesses, and also help you decide on the choice of a model that will last for decades. polypropylene boats Do not fear the impact of stones as fear aluminum, and how to properly care for the gelcoat, so that it retains its original appearance.
Design features and materials of production
The basis for creating a rigid housing is most often fiberglass or food polypropylene. Fiberglass It's a multi-layer structure, where the reinforcement element is fiberglass, which is connected by a polymer resin, and it allows you to create complex contours of the hull, which provide excellent sleeving, even at relatively low engine power. The molding technology allows you to integrate various elements into the hull: runducts, Banc seats and deck locks, making the boat as functional as possible.
Polypropylene analogs are made by thermoforming or welding of sheets. The main advantage here is that they are thermoforming. monolithic And the structure of the polypropylene is very rigid, and it's very resistant to impact, and if the fiberglass can get cracked or chipped when it hits hard, then the polypropylene is usually just deformed when it comes back to its original shape. plastic-bottom Such boats are often reinforced by additional stiffness ribs, which allows you to withstand significant loads without the use of heavy stringers.
It is important to understand the difference in the repairability of these materials: plastic glass requires certain skills and materials (resins, hardeners, fiberglass) to restore the integrity of the housing, while polypropylene can be sealed with a building hair dryer or a special soldering iron right on the shore of the reservoir. Composite repair in the field is almost impossible without a special set, so when buying a boat made of fiberglass, you should always have a remake with you.
⚠️ Warning: When buying a fiberglass boat, carefully inspect the interior surfaces for unpainted areas ("dry" spots), which indicates a violation of lamination technology and may be the point of beginning the dissection of the hull in the future.
Vacuum infusion technology
Vacuum infusion is an advanced method of producing fiberglass housings. Unlike hand-laying, where the glass/resin ratio is often broken down to the weighting side, vacuum allows you to accurately dose the amount of binder, which makes the boat lighter by 20-30% and much stronger, since the structure is almost no air bubbles.
Advantages of a hard plastic bottom over an inflatable one
The transition from an inflatable boat to a hard-bottomed boat is always a step towards greater comfort and safety. water-stabilityThe rigid body does not "walk" underfoot, allowing you to stand confidently while throwing spinning or mounting tackles. inflatable tubes, even with an inflatable floor (NDB), can not provide such rigidity of the platform, especially when fully loaded with crew and equipment.
The second important aspect is the permeability. plastic-bottom You don't have to be afraid of contact with a shell, a sharp grass or a small snag that inevitably occurs in shallow water, and you don't have to look around to avoid running into a hidden barrier, as you do with PVC material, which is easy to puncture. Polymer materials have high abrasive resistance, which prolongs the life of the craft.
In addition, the rigid body allows you to install more powerful outboardInflatable boats are often equipped with motors with limited propulsion because of the risk of straining the transom or cylinders on the wave. The plastic transom, which is an extension of the hull, withstands vibrations and loads from higher-powered motors, which increases speed and allows faster access to the fishing site.
- 🚀 High speed of exit to planing due to rigid contours of the body.
- 🛡️ No risk of puncture of the bottom part on stones or reinforcement.
- ❄️ Low thermal conductivity of the material – it is warmer to sit in a plastic boat than on cold aluminum.
- 🔇 Minimum noise level when driving, which is important for fishing.
Comparison: Plastic, Aluminum or PVC?
The choice of hull material is always a compromise between weight, strength and price. Aluminum boats, such as the popular Kazanka or Crownjee, are famous for their indestructibility, but they are heavier than plastic counterparts and have high thermal and sound conductivity. aluminum in the sun is hot, and in cold weather instantly gives heat to the body, requiring the mandatory use of rugs or plywood decks.
PVC boats benefit in compactness during transportation, but lose in durability when actively operating in difficult waters. Plastic floating craft It occupies an intermediate niche: it is heavier than inflatable, but lighter than aluminum, and it lacks most of the drawbacks of both materials, and the composite does not rust, rot, or undergo electrochemical corrosion, which often destroys aluminum alloys in salt water.
Let’s look at the specifications Comparison Table to visualize the differences:
| Characterization | Fiberglass | aluminum | PVC |
|---|---|---|---|
| Body weight | Medium. | Highly | Low. |
| Repairability | Difficult. | Medium | High. |
| Term of service | 20+ years | 30 years. | 10-15 years |
| Noise insulation | Great. | Bad. | Good. |
If you are looking for a balance between comfort and reliability, composite-boat It doesn't require the care of aluminum (which needs to be painted and protected from oxidation), and it doesn't fear punctures like PVC.
Operation and care of the composite housing
Despite its high strength, a plastic bottom boat requires proper maintenance, the main enemy of fiberglass is ultraviolet light and mechanical damage to the helcote (top decorative layer). If you are in the sun for a long time without protection, the material can fade and lose gloss. polish with UV filters, which will preserve the aesthetic appearance and protect the structure of fiberglass.
Polypropylene boats are more inert to the environment, but they don't like dirt and oil products, and when they get on board, the oil stains from the engine can dissolve some plastics or leave indelible traces. cross-plate It should always be kept clean. Boat washing is better done with water with the addition of soft detergents, avoiding aggressive chemicals and solvents.
⚠️ Warning: Never use acetone or gasoline to clean the plastic case of bitumen or resin. These substances can soften the top layer of plastic, making it sticky and matte, which will require serious restoration.
The boat's storage also has its own peculiarities: Unlike inflatable boats, it is advisable to keep a hard boat either indoors or under a dense awning that protects against precipitation and direct sunlight. water-freeIt can expand and damage the structure when frozen, although this is less relevant for quality plastic than for metal.
Tuning and redesign of plastic boats
One of the main advantages of hard-bottomed boats is the ability to upgrade them in depth. console-wheelThe plastic case allows the hatches and windows to be cut without losing their tightness, if you use the right seam sealing technology.
A frequent element of tuning is the installation of inflatable tubes around the perimeter (outrigers) or a full-fledged inflatable bull syringe, which increases stability and allows you to safely go on a large wave, combining the advantages of hard bottom and soft boards. winch for lifting the boat to the trailer, since the rigid body withstands point loads from winch rollers better than soft PVC.
It is important to not overload the boat with extra equipment, because every kilogram on board is lost speed and increased fuel consumption, so always weigh the need to install one or another element when planning a tuning. The optimal solution for fishing is to install a lightweight removable chair on a rotating base, which does not require drilling the bottom.
- ⚓ Installation of an anchor box in the nose for hanging.
- 🎣 Installation of holders of rods and slats for attachments.
- 🔋 Organization of a sealed compartment for batteries.
- 💡 Installation of LED-lighting cockpit for night fishing.
Safety and limitations in use
Despite its strength, plastic boats have limitations, chief among them fragility at low temperatures. The plastic glass becomes more brittle in the cold, so hitting ice or a hard shore at temperatures below -10°C can cause serious damage. Operation In winter, it requires special care and accuracy when descent into the water and pulling ashore.
And you also have to consider the buoyancy of the material. Unlike PVC, which is itself a floating material, fiberglass sinks. This means that the presence of built-in buoyancy blocks (foamed voids or sealed blocks) in the boat structure is a very important factor. critical If the boat overturns or gets a hole, it's these elements that will keep it afloat with the crew.
Keep in mind the rules of GIMS. To operate a boat with a power of more than 5 hp (or 8 hp depending on current regulations), you need to have rights and registration of the vessel. Plastic boats are often equipped with powerful engines, so make sure that your documents and equipment (life jackets, anchor, scoop) comply with the requirements of the law.
Frequently Asked Questions (FAQ)
How long does a fiberglass boat last for active operation?
With proper care and storage, the lifespan of a quality fiberglass boat is 20 to 30 years or more. Polypropylene models can last even longer, since the material is not susceptible to UV ageing to the same extent as resins and has a "shape memory."
Can you repair the bottom of a plastic boat yourself?
Small chips and scratches on fiberglass can be sealed with epoxy resin and fiberglass. Serious holes require professional repairs, cutting the damaged area and laminating the new patch from the inside and outside. Polypropylene can be soldered with a soldering iron, but to maintain strength, it is better to use the welding method with a filler rod.
Do I need to paint a plastic boat?
Fiberglass boats don't need to be painted to protect against corrosion because they don't rust; paint is applied only for aesthetic purposes or to restore the gelcoat layer; aluminum boats require regular paint to protect against oxidation.
Is plastic afraid of hitting stones?
Plastic glass is afraid of spotting sharp stones that can break the material. Polypropylene is much more resistant to such effects and often only swell without losing its tightness. However, in both cases, extreme rocking is not recommended.
Which motor is better to choose for a boat with a plastic bottom?
The choice of engine depends on the load capacity and shape of the body. For light models up to 3 meters, 5-9.9 hp is often enough. For larger boats (3.5-4.5 meters) with contours capable of sleeving, the optimal engines in the range of 15-30 hp. Always check the data-sheet figures of the boat.