The RL-350: Legendary Soviet Aluminum on the Water

In the world of water-motor technology, there are models that become a symbol of the era, and Radar-350 missile This Soviet-made boat still plows through the vastness of rivers and lakes, drawing respect from experienced water-engineers and curiosity from beginners, and its recognizable silhouette with its high sides and characteristic nose shape is difficult to confuse with other boats of the time.

Many owners still wonder whether it is advisable to buy or restore this particular vessel in modern conditions. Aluminum alloyThe hull has unique strength properties, but requires a competent approach to maintenance. In this article, we will examine in detail all aspects of owning this legendary boat, from technical nuances to real-life sensations on the water.

It is worth noting that the radar-350 is often compared with later modifications, but this model has its own version. unique design features of the transom plateUnderstanding these differences is critical for those planning repairs or tuning.

History of creation and design features

Development of the boat Radar-350 missile The first was a period of rapid development of small river navigation in the USSR, where engineers were tasked with creating an affordable, reliable vessel that could withstand the harsh conditions of operation in inland water bodies, and the main material was aviation aluminum, which provided high corrosion resistance and relative ease of construction.

The hull of the boat is riveted, which was standard at the time, and the use of rivets avoided the problems of deformation of the metal during welding and ensured that the seams were tight when assembled properly. Bones the body is made with a sharp fracture, which has a positive effect on the germination of the wave and stability on the course when moving against the flow.

The interior of the cockpit is designed to accommodate passengers and cargo, and despite its compact size, engineers managed to arrange enough space for cans and gear, and focused on the bow, where the bow is located. luggage-boxProtecting things from splashing and soaking.

⚠️ Attention: When buying a used radar-350, first check the condition of rivet joints in the area of the zygomatic stringers. This is where leaks occur most often due to metal fatigue and vibration during the course at high speeds.

The transom design allows medium-power outboard motors to be installed, but it is worth remembering that the design specifications of the boat were created for the engines of the time, and installing an overly powerful modern engine may require strengthening the transom plate.

Technical specifications and dimensions

To fully understand the capabilities of the vessel, you need to consider its data-sheet figures in detail. Radar-350 missile belongs to the class of small pleasure boats, but has a margin of safety, allowing you to go out on large water in favorable weather.

The dimensions of the boat are optimal for transportation on a standard car trailer. the length of the hull allows you to comfortably accommodate a crew of 3-4 people, although the official passenger capacity can vary depending on the year of release and modification.

Below is a table with the main technical specifications that will help you navigate the parameters of the vessel:

Parameter	Meaning
Longest length	3500 mm
largest width	1350 mm	130 kg
Load capacity	400 kg
Passenger capacity	3-4 people.
Motor power (river)	15-20 hp.

It is important to bear in mind that dryweight boats can differ significantly from passport depending on the degree of preservation and the availability of additional equipment. Aluminum has the property of overgrown with algae and fouling, which also adds mass when standing on the water for a long time.

The bottom of the boat is flat in the bow and has a slight stern sternness, which provides good swelling, but requires accuracy in lateral winds. Rocket It is sensitive to weight distribution, so it is important to properly position the cargo and passengers.

Performance in water

Conduct Radar-350 missiles In calm water, the boat behaves predictably and steadily, and the aluminum hull responds to shocks against waves, creating a characteristic noise that you quickly get used to.

When going to planing, the boat needs the right differentiation. If the nose is too upside down, the boat starts to "jump" on the waves (pig), which reduces speed and comfort. Proper landing ensures smooth and fast travel.

• 🌊 Sustainability: High stability in the parking lot allows you to safely move around the cockpit even in full growth.
• 🚀 Dynamics: The lightweight body quickly enters planing mode even with engines with a capacity of 9.9 hp.
• 💨 Wind resistance: High sides create sailing, which must be taken into account in a strong side wind.

Many owners have a great wave germination because of the sharp nose, and the boat doesn't slosh on the wave with the flat bottom, it cuts it apart, which reduces the impact on the body and the spine of the crew. RL-350 suitable for use in large reservoirs and Lake Ladoga in calm weather.

⚠️ Attention: It is not recommended to exceed the recommended power of the engine by more than 20%. Aluminum transom may not withstand vibration loads from too powerful engine, which will lead to the destruction of the aft.

The boat's handling is rated as good. The flat bottom in the stern facilitates sharp turns, but requires a gas discharge before the manoeuvre to avoid drifting the stern. For beginners, this can come as a surprise, so it's best to devote the first hours on the water to practicing maneuvers in quiet water.

Maintenance and repair of aluminum housing

Main advantage Missiles But it also needs attention. The main enemy of aluminum on the water is electrochemical corrosion, especially if the boat is often standing on water with the engine connected or in salt water (although this is rare for a radar-350).

Regular inspection of the bottom and transom is mandatory, and if you notice white oxides or bubbles on the paint, it's a signal to action, and cleaning and coating with special soils for aluminum will extend the life of the case for decades.

Repairing holes or cracks in aluminum requires specific skills. Normal electric welding is not the right thing to do here, you need argon welding. For small holes, you can use fiberglass reinforced epoxy compounds, but this is a temporary solution.

Special attention should be paid to wooden elements: banks (seats) and flooring. In old boats, the tree often rots, replacing them with moisture-resistant plywood or larch is standard procedure for restored Rocket.

If you're planning to paint, remember to prepare the surface. Aluminum requires careful degreasing and adhesive soils. Paint applied without soil will peel after the first winter.

How to paint an aluminum boat?

For painting aluminum boats, two-component polyurethane paints or special aluminium enamels (for example, Interchrome or Tikkurila) are best suited. A layer of primer containing zinc or chromates is required to prevent oxidation.

Tuning and modernization of RL-350 missiles

Owners Radar-350 missiles The tuning of this boat is a popular direction for increasing comfort and safety, and the most common option is to install hand-helds instead of standard cans.

Runduks serve a dual function: they serve as seats and sealed boxes for storing things, fuel and equipment, which also increases the unsinkability of the boat, as sealed volumes push water out when it rolls over.

• 🛡️ Defense: Installation of the pendant or strengthening the bottom with rubber bands protects against impacts on stones and driftwood.
• 💡 Lights: Installation of LED lights in the nose and stern facilitates mooring in the dark.
• 🪜 Comfort: Installing removable soft linings on banks significantly increases comfort during long transitions.

Another popular element of tuning is the installation of windshield, which, although there is no regular space for it, many craftsmen make removable structures of Plexiglas that are attached to a landline bar, which saves from headwinds and splashes.

Upgrades often include the engine mounting system, and installing a more powerful transom wheel or reinforcing the armature bolts are useful improvements that make operation easier.

Comparison with peers and competitors

In today's market Radar-350 missile It competes in the niche of low-cost aluminum boats, with the main rivals being the Crimean, Kazanka and modern Chinese boats, each with its pros and cons.

Compared to Kazanka-M, Rocket It's a seaworthy one, thanks to the sharper contours of the bow, the Kazanka is flatter and rolling, though more spacious inside, and the Rocket is better suited for open water.

Compared to the Crimean boats, the Rocket is lighter and more compact. The Crimea is a heavier and more inertial vessel, requiring a more powerful engine to go into plane, but the Crimea is often praised for its softer run due to its keeled bottom.

Modern Chinese boats often win in design and availability of ready-made options (console, glass), but lose in metal thickness and build quality. rockete It is often thicker and better than in new budget models.

⚠️ Attention: When buying a used boat, don’t blindly believe the seller’s assurances about the “thickness of the side.” Bring a magnet (it won’t stick to aluminum) and a bar to make sure that you don’t have through corrosion.

The choice between Rocket and its counterparts often comes down to the availability of a particular specimen and condition. A well-preserved Rocket is a great base for recovery, whereas a new cheap boat may require reinforcement as early as the first season.

Where to buy and what to pay attention to when choosing

Since the production Radar-350 missiles It's long since stopped, and you can only buy it on the secondary market, and it's regularly advertised on bulletin boards, water clubs, forums, and it's very much a matter of state and region.

When you're looking at the boat, make sure you put it on a flat surface and look at the geometry of the hull. The boat doesn't have to be "in a mess." Check the bottom's flatness, because the dents may indicate a serious hit in the past.

Note that although for boats with engines up to 10 hp (or 8 kW) and weighing up to 200 kg registration with GIMS is not always mandatory (depending on the amount of power and weight), the presence of a technical data sheet simplifies life and confirms the legality of origin.

Don't forget to check the kit. Anchor, anchor shaft, life jackets and scoop are not just small things, but safety requirements. Old boats often lose their escape plugs and drain holes.

Conclusion

Radar-350 missile It is a living legend that has proven its reliability over time, and despite its age, it remains relevant for fishing, hunting and family water recreation, and the proper care and timely repairs allow these boats to last for decades.

If you are looking for a reliable, maintainable and easy-to-manage boat and you are not afraid of the lack of modern comfort out of the box, the Rocket is a great choice.

Do I need registration for the RL-350 rocket in GIMS?

Registration is required if the weight of the curb boat exceeds 200 kg OR the engine power exceeds 8 kW (about 10.88 hp). If you have a boat lighter than 200 kg and an engine weaker than 10 hp, registration is not required. However, the rules may change, and the exact weight of your boat is better weighed on the scale.

What is the maximum speed of the RL-350 rocket?

With an engine of 15-20 hp and one passenger, the boat can reach speeds of up to 30-35 km / h. With a full load, the speed drops to 20-25 km / h. Much depends on the state of the bottom (fouling) and the engine setting.

Can I boil a crack in the body of the Rockets on my own?

Only if you have experience in argon welding aluminum, you can't cook with a conventional electrode, aluminum will burn, and for laymen, you'd better use special repair compounds based on epoxy resins with aluminum powder or go to a boat repair shop.

Which anchor is best used for a rocket?

The optimal weight of the anchor for a boat with a length of 3.5 meters is 3-4 kg. The best fit anchors are Cat (easily removed from the thickets) or Denfort (well held on sand and silt).