Boats 21 These are legendary metal vessels that have gained popularity among fishermen, hunters and tourists for their versatility and reliability. Originally designed for military use, these boats are now heavily used in the civilian sector, combining strength, maneuverability and adaptability to different navigational conditions. AMG5 provides resistance to corrosion, and a flat bottom allows you to go out into shallow water without the risk of damage.

In this article, we will discuss design boat-boat 21We'll compare them to modern models, give you practical advice on how to choose a motor and accessories, and also reveal the nuances of maintenance and repair. We'll focus on safety and legal aspects of operation, from registration with GIMS to transportation rules. If you are planning to buy or already own a boat, here you will find answers to key questions.

Type 21 boat specifications: What you need to know before buying

Boat. 21 class small-boat It has a rigid hull, designed to navigate inland waters and coastal marine areas (up to 20 miles from the coast). 4.3 m × 1.6 m × 0.6 m (length × width × height of the side), which allows you to carry up to 4-5 people or cargo weighing up to 600 kgThe weight of the boat itself varies from 120 to 150 kg depending on the modification and thickness of the skin.

Key design features:

  • 🛡️ Case material: aluminum-magnesium alloy AMG5 thickness 1.5–2 mmresistant to shock and corrosion.
  • 🚤 Shape of the bottom: flat or slightly keeled (modified for motors), optimized for shallow water.
  • ⚙️ transom wheels: standard is not available, but can be installed additionally.
  • 🔧 Prefabricated construction: the body consists of 3-4 sections, fastened by rivets and sealant.

Maximum power of the installed motor - 15-25 hp. (depending on the modification and year of release) This limit is threatened by loss of controllability at high speeds and the risk of damage to the transomIt is important to consider that Soviet-made boats (before the 1990s) often have a lower weld life, so it is recommended to check for leakage before buying a used model.

⚠️ Attention.Boats 21 early releases (before 1985) may have defects in the anchorage of the transom before installing a motor with a power exceeding that of the transom. 10 hp be sure to strengthen the transom board with steel plates.

Comparison with modern analogues: pros and cons

Despite the venerable age of the design (designed in the 1970s), the boat 21 It still competes with modern models because of its low price and maintainability, but it also has its weaknesses.

Parameter Type 21 boat. Cayman 330 Flagship 420 PVC boat Quicksilver 340
Case material aluminum AMG5 aluminum AMG61 Aluminum with anticorrosion coating PVC, 5-layer
Max, engine power. 15-25 hp. 30 hp 40 hp 15 hp
Weight (without motor) 120-150 kg 95 kg 110 kg 35 kg
Price (new) From 80 000 ₽ (remarks) From 180 000 ₽ From 220 000 ₽ From 120 000 ₽

Main advantages 21:

  • 💰 Low cost: 2-3 times cheaper than imported analogues.
  • 🔧 Repairability: the ability to weld the body in the field.
  • 🌊 Universality: suitable for rivers, lakes and sea bays.

Disadvantages:

  • ⚖️ Weight.: heavier than PVC boats, more difficult to transport.
  • 🔊 Noise: Aluminum case louder than plastic models.
  • 📉 Outdated ergonomics: no modern accessories (for example, built-in gear boxes).
📊 What type of boat do you prefer?
Metallic (type 21)
PVC
Modern aluminium
Plastic.
Other

Type 21 motor choice: criteria and recommendations

The selection of the outboard motor is a critical step that affects the safety and comfort of operation. 21 Optimal power motors are considered 9.9-15 hpbut the installation and 20-25 hp If the transom is strengthened, let's look at the key selection criteria:

Engine type:

  • 🔋 Electric motors: suitable for quiet fishing (e.g., Minn Kota Endura C2 55) but limited in terms of working hours.
  • ⛽ Gasoline 2Tlight and powerful (e.g., Yamaha 9.9 FMHS), but require mixing of oil with gasoline.
  • 🛢️ Petrol 4T: more economical and quieter (e.g. Honda BF15D3), but heavier and more expensive.

Weight and dimensionsThe engine must not exceed 35-40 kgOtherwise, you'll have trouble balancing the boat. Mercury 20 ELPT weight 36 kg - That's the limit. 21 No more work.

3. ManageabilityFor boats with a flat bottom, it is better to choose engines with a lower unit (at least) 508 mm) to avoid cavitation in shallow water.

⚠️ Attention.: When installing a motor with a power above 15 hp boat 21 necessary:

  • Strengthen the transom board with a steel plate thick 4-5 mm.
  • Set additional ribs on the stern.
  • Check the boat for stability at full load.

☑️ Preparation of the boat for the installation of the engine

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Maintenance and repair: how to extend the life of the boat

Aluminum boats 21 They require regular maintenance, especially if they are operated in salt water or stored outdoors.

1. Anti-corrosion treatment:

  • 🧴 Apply special compositions (e.g. Loctite 7649) welds and rivets 2 times a year.
  • 🔩 Check the condition of rivets: when rust appears, replace it with aluminum or stainless ones.

2. Sealing:

  • 🛠️ Use a sealant Sikaflex-291 for the treatment of joints and holes under the fastenings.
  • 💧 After each launch, dry the boat, especially the internal compartments.

Repair of the hole:

  • 🔥 Minor damage (up to) 5cm) may be welded with argon.
  • 🧩 Large holes are eliminated with the help of aluminum patches and rivets.
What to do when depressurizing the seams?

If you notice a leak on the seam while you're sailing, you should immediately steer the boat to the shore, and the temporary solution is to seal the gap with waterproof tape. 3M 5200 Once returned, you need to completely disassemble the seam, corrosion cleaning and re-sealing with the rivets replaced.

Average life of a boat 21 with proper care, it is 20-30 yearsHowever, without maintenance, corrosion can cause irreversible damage through 5-7 years, especially in seawater.

In Russia, boats 21 shall be registered in GIMS MOEif their power exceeds that of 10.88 hp (8 kW) or the length of the body more than 20 feet (6.1 m)For 21 (length) 4.3 m m) registration is only required when the engine power from 15 hp.

The registration procedure shall include:

  1. Submit an application to the local office of the GIMS with the boat’s passport (if any) or technical description.
  2. Payment of the state duty (1 600 ₽ for natural persons).
  3. Passing a technical inspection (checking tightness, availability of life-saving means).
  4. Obtaining a boat registration certificate and a flight number.

Important points:

  • 📄 For boats without documents (for example, bought from hand) will require expertise to confirm the technical specifications.
  • 🚨 Penalty for non-registration – from 1,000 to 2,000 (Article 11.8.1 of the Administrative Code of the Russian Federation).
  • 🔄 When selling a boat, you must re-issue a boat registration certificate for a new owner.
⚠️ Attention.If you plan to go out to sea (even in the coastal zone), additional boat-book and insuranceThese documents are not required for inland waters, but are recommended.

Tuning and accessories: how to improve the boat type 21

Standard equipment of the boat 21 It's minimalist, but it can be upgraded to suit your needs.

1. Improved handling:

  • 🎯 Installation hydrofoil (for example, Doel-Fin) to reduce the resistance of water.
  • 🔄 Replacement of the steering wheel with the model feedback (for example, Yamaha Remote Control).

2 Comfort and ergonomics:

  • 🪑 Installation folding-seat with shock absorbers (e.g., Attwood 11805-7).
  • 📦 Installation sealed-box for gear (e.g., Plano 131200).

3. Security:

  • 🆘 Addendum buoy and fire extinguisher (Required for seafaring trips).
  • 🔦 Installation LED navigation lights (for example, Perko 1156).

When tuning, it is important not to violate centre-upFor example, if you put a heavy battery in the bow, you can get the stern up on the go.

  • ⚖️ noseLightweight things (rods, life jackets).
  • ⚖️ Mid-point: battery, fuel tank.
  • ⚖️ Feed: motor, heavy load (anchor).
💡

Before installing additional equipment, check the boat on the water with a full load. If the nose rises too high, move the load closer to the stern or install a ballast (for example, a sandbag).

Safety at sea: rules and recommendations

Boat. 21Despite its strength, it requires compliance with safety regulations.

  • 🌊 Overturning: possible with sharp turns or wave heights higher 0.5 m m m m.
  • ⚡ Electric shock: when using an electric motor in salt water.
  • 🔥 Fire.: when fuel leaks from the tank.

Checklist of safety before getting on the water:

☑️ Security check

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Pay special attention weather:

  • 🌬️ With the wind above 10 m/s Refrain from going out into open water.
  • 🌧️ In the rain, check the drainage holes (if any).
⚠️ Attention.: If the boat is beginning to prowl a lot (unstable course), it is a sign of overload or improper alignment. Immediately slow down and redistribute the load.
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The Type 21 is not designed to sail in waves above 2. Even in low waves, stay close to shore and avoid sharp maneuvers.

FAQ: Answers to Frequent Questions

Do I need to register a Type 21 boat with a 9.9 hp engine?

No, registration in GIMS is mandatory only for motors with a power from 10.88 hp However, if you plan to go out to sea, we recommend registering a boat voluntarily for insurance.

Can I install a 30 hp engine on the Type 21?

Technically possible, but highly recommendedThe boat's hull is not designed to handle this load, and there is an increased risk of transom deformation and loss of controllability. 25 hp subject to reinforcement of the structure.

How to transport a Type 21 boat?

The boat can be transported on the roof of the car (it will require strong fastenings and assistance of 2-3 people) or on a trailer. boat-trailer with keel supports (e.g., MotoTech LT-400) During transport:

  • Remove the engine and transport it separately.
  • Secure the boat with slings at 4-5 points.
  • Use soft pads to avoid scratches.
How much does a new Type 21 boat cost?

Original boats 21 Soviet production is no longer produced, but their replicas are produced by Russian plants (for example, the Russian plant). "Volgar" or "Aluminko"The price of a new boat:

  • 80 000–120 000 ₽ - basic equipment.
  • 150 000–200 000 ₽ - with the strengthening of the transom and additional accessories.

The B/C model can be found in 30 000–60 000 ₽However, a thorough corrosion check is required.

What paint should I use to paint a boat?

For aluminum boats suitable:

  • Epoxy paints (for example, International Intergard 264) durable but require primer.
  • Acrylic paints (for example, Hempel Hempadur 15500) are easier to apply but less resistant to mechanical damage.
  • Rubber paints (for example, Rust-Oleum 7778) - protect against corrosion and slide when touched.

Before painting, be sure to clean the case of the old coating and degrease the surface.