Buying a first swimmer is always a landmark event, opening the way to new horizons and fishing trophies. Many beginners mistakenly believe that it is enough to simply choose a beautiful boat in the catalog and pay the bill, but reality dictates its terms. Comprehensive purchase It requires careful budgeting, understanding of motion physics, and knowledge of legal intricacies.
You have to solve a difficult problem: to reconcile the specifications of the body, engine thrust and the load capacity of the trailer, an error in the calculations at the initial stage can lead to the fact that the kit will be inefficient or even dangerous on the water. heavy boat With a weak engine, there will be fuel, and a weak trailer will not withstand the weight of the bundle during transportation.
In this article, we will discuss all the nuances that will help you to assemble the perfect kit for a holiday on the water. We will consider the technical aspects of the selection of the engine, the features of the choice of chassis for transportation and current legal requirements. Competent approach It will save you money and nerves in the future.
Calculation of engine power under the boat body
The first thing that starts with assembling a kit is determining the thrust required, on the transom of any boat, whether it's a boat. PVC And you can't exceed that limit, because it threatens to destroy the transom and lose buoyancy.
But it's not always wise to get the engine right back to maximum. For heavy cargo boats with multiple passengers, you need a power reserve to go to the planing, and if you plan to fish alone, the excess power will only lead to fuel overruns and noise.
There is a simple rule for the preliminary calculation: for every 25 kg of total weight of a boat (hull, engine, fuel, crew, cargo) one horsepower is required. Of course, this is an average figure, depending on the shape of the bottom.
- 🚤 For light inflatable boats up to 3 meters often enough motor capacity of 2-5 hp.
- ⚓ Medium-sized PVC boats (3.2–3.6 m) require engines in the range of 9.9–15 hp.
- 🌊 Metal boats and large inflatable models (4+ m) need power from 20 hp and above.
When choosing between two-stroke and four-stroke engines, consider operating conditions. Two-tacters It is lighter and cheaper, which is critical for small boats where every kilogram of weight is important. Four-stroke engines It is more economical, quieter and more environmentally friendly, but their mass can significantly affect the differentiation of the boat.
Trailer selection: weight, balancing and construction
Many people forget that the trailer is a full part of your transport bundle. When you buy a boat with an engine, you should understand that the trailer must withstand the weight of this entire structure with a margin. loading capacity chassis.
Pay special attention to the type of props. For boats with a thin bottom or complex geometry (for example, with a pronounced keel), roller bracket supports are ideal, they make it easy to pull the boat together with a winch and provide good ventilation during storage.
⚠️ Warning: Never use a trailer if its springs are planted and the hubs have a backlash. Operating a faulty chassis on the track can lead to loss of control and accidents.
The brake system is important, and the rules say that if a trailer is over 750 kg in weight, it must be fitted with brakes, and lightweight systems don't require that, making life easier for small boat owners.
Galvanized steel lasts longer in an aggressive environment (salt water, reagents on the roads), but costs more than painted. Aluminum trailers are lightweight and do not rust, but often cost more than the cost of the boat itself.
Comparative table: types of trailers for boats
To make your choice easier, we have compiled a comparative description of the main types of trailers, which will help you to weigh the pros and cons before buying.
| Parameter | Roller trailer | Trailer with pads | Aluminum trailer |
|---|---|---|---|
| Type of support | Metal rollers | Wooden bars with carpet | Roller-paller combination |
| Loading convenience | High (easy move) | Medium (needs inertia) | High. |
| Protection of the hull | Medium (point contact) | High (tight fit) | High. |
| Term of service | 5-7 years (replacement of rollers) | 3-5 years (carpet replacement) | 15+ years |
As you can see from the table, each option has its advantages: roller-based systems are ideal for sloping downhill, where the boat needs to be literally pulled out of the water, Lodges are better at preserving the geometry of the hull during long-term storage and transportation on bad roads.
☑️ Checking the trailer before buying
Don't forget. breathedIts length affects the stability of the trailer on the road. Breathing too short can cause the tail to wag at high speeds, which is dangerous for the entire coupling. The optimal length allows you to place the spare wheel and ensures the correct angle of attack when loading.
Legal aspects: registration and rights
The issue of registration with GIMS (State Inspectorate for small craft) often puzzles newcomers. The rules change, and it is important to rely on current legislation. At the moment, the key parameter is the weight of the outgoing vessel.
Small boats weighing more than 200 kg are subject to registration, including the weight of the boat itself, the motor, stationary equipment and equipment. If your bundle is lighter, you can safely ride without numbers, but you must carry your motor and boat documents with you.
⚠️ Attention: When calculating the mass, the weight of the motor in running order (with oil and a full tank if the tank is built in) is taken into account. Do not try to deceive the inspectors by removing the engine before checking - this can be considered a violation.
As for rights, driving a vessel with an engine of more than 10 hp (or 8 kW) requires a certificate of control for a small vessel of category M. If the engine is weaker, rights are not required, regardless of the size of the boat.
For a trailer, the situation is simpler: if its total weight is up to 750 kg, registration with the traffic police is not required, numbers are not needed. It is enough to have a sales contract and a check. If the weight is more, registration, numbers and inspection are required (for trailers younger than 3 years, no maintenance is required).
Do I need to register a boat if the engine is more powerful than 10 hp, but the boat is light?
Yes, if the total weight of the boat and the engine exceeds 200 kg, registration is required regardless of the engine power, however, the rights of category "M" are required only if the engine power exceeds 10 hp.
Budgeting: Hidden costs when buying
The price you see on the price tag in the store is just the tip of the iceberg. Buying a motorized boat and a trailer inevitably entails additional costs, which you should know about in advance. Financial cushion It should be at least 20-30% of the cost of the main set.
First of all, you need an anchor with a chain and a phala. Inflatable boats often buy light cat anchors, for metal boats - classic Admiralty or Denfort, and you also need an anchor phala (rope) at least three depths of the reservoir, where you plan to stand.
- 🛡️ Life jackets by the number of passengers are an indispensable element of security.
- 🔋 Additional battery and terminals if the motor requires electrical start or has an electric starter.
- 🧰 Remap (patch, glue, keys) in case of unforeseen situations on the water.
And don't forget about seasonal storage, because you can't keep the boat pumped all year round in the sun, you need a garage space, you need a paid storage space, and you also need to buy special oil and candles to preserve the engine in winter.
When buying a used boat, be sure to check the transom for a deflection. Press hard on the lower edge of the transmunz - if it bends inwards by more than 1-2 cm, the boat requires serious repair or replacement of the transmunz.
Transportation also comes at a cost, and the fuel consumption of a car with a trailer on a hook increases by 20-30%, and the trailer without a tent or cover quickly loses its appearance, and the engine without a cover will rust.
Maintenance of the kit
Water, especially salt water, and road reagents are the main enemies of your equipment. Regular maintenance will prolong the life of the boat, motor and trailer for many years. After each foray into salt water, the kit must be washed with fresh water.
The engine requires oil change (in the gearbox and engine, if it is 4T) according to the hourly or seasonal rules. Candlestick and fuel filter condition also need to be monitored. For two-strokes, the quality of the gasoline-oil mixture is critical.
The trailer needs to lubricate the hub bearings. Even if you have unmaintained hubs, it's worth checking them once a year for hum and heat. Brake pads (if any) wear out, and winch cables tend to delaminate.
⚠️ Warning: When washing the motor with a kerkerker, do not direct a jet of water under high pressure on the glands and electrical connectors, this will lead to water entering the knots and expensive repairs.
Keeping the boat in a deflated (PVC) or inverted (metal/plastic) state will prevent moisture accumulation and deformation of the hull, and the motor for the winter is better removed and stored in an upright position.
The main secret of long service is thorough washing with fresh water after each exit and proper seasonal storage in a dry room.
Frequently Asked Questions (FAQ)
Do I need to register a trailer for a boat in the traffic police?
Registration in the traffic police is required only if the total mass of the trailer (own weight + cargo) exceeds 750 kg. If the weight is less, it is enough to have a contract of sale and a check.
Can I drive a boat with the engine up?
Technically possible, but not recommended for long distances and high speeds, the elevated motor shifts the center of gravity, increasing the load on the trailer's breather, and creates sailing, better transport the motor in the lowered position or removed.
Which trailer is better for an inflatable boat: with pawns or rollers?
PVC inflatable boats prefer trailers with adjustable rollers, which provide point support, allowing air to circulate under the cylinders, which prevents material from being blocked. Logs can create pressure zones.
Do I need a 9.9 HP boat license?
No, category M rights are not required, as the power does not exceed 10 hp (8 kW), however, if the total weight of the boat with the engine and equipment exceeds 200 kg, the vessel itself must be registered with the GIMS and get a number.