Choosing a boat for fishing or family vacations on the water often rests on finding the perfect balance between reliability, capacity and cost of ownership. Boat North 420 It is deservedly considered one of the most popular models in its class, offering a time-tested design of aluminum-magnesium alloy AMg5M. It is not just a piece of metal bent on the sides, but an engineering solution that allows you to feel confident both on calm reservoirs and on small rivers with moderate currents.
The owners appreciate this project for its versatility: a spacious cockpit allows you to comfortably accommodate three adults, and the reinforced transom withstands engines with a capacity of up to 30 hp. North 420It is important to understand not only the parameters declared by the plant, but also the real operational nuances that become obvious only after several seasons of active operation. The nominal passenger capacity of the model is 3 people, but the real load capacity allows you to safely transport up to 400 kg of payload while observing the rules of weight distribution.
In this article, we will discuss all the specifications, compare the modifications with rumpling and steering, and discuss safety and possible tuning. You will learn why this boat has been a bestseller for many years and what to look for when buying a used copy or ordering a new model from the shipyard.
Structural features and materials of the body
The basis of durability North 420 The AMG5M is a highly corrosion-resistant aircraft alloy, and it is very durable. Unlike cheaper arc-welding, it is argon-arc-welding, which ensures that the seams are tight even under strong dynamic wave loads. The bottom and sides are thicker depending on the modification, but the standard is 2 mm, which is the best trade-off between the strength and the overall weight of the product.
The hull is designed to bend the side of the hull, which significantly increases the stability of the craft. The hull is not only blocked by water during the course, but also serves as an additional rib stiffness. Aluminum boat North 420 It has a well-thought-out system of strength gain: transom banks and longitudinal stringers are distributed so as to minimize vibration and noise when driving.
Special attention should be paid to the treatment of welds. On quality specimens they are cleaned and do not have sharp grains, but over time even reliable metal requires attention. If you plan to actively operate in salt water or reservoirs with an aggressive chemical environment, it is recommended to additionally treat welded joints with special corrosion inhibitors.
- 🛡️ Material: Aluminum-magnesium alloy AMg5M (analod 5083), not subject to rusting.
- ⚙️ Technology: Argon welding with full joints, ensuring tightness.
- 📏 Geometry: Skull bends and reinforced keelson increase seaworthiness and course stability.
Secrets of alloy marking
On the bottom of the boat, usually near the transom or under the jar, the alloy marking and sheet thickness are knocked out. For North 420, this should be "AMg5M" and the number "2" (or "1.5" for lighter versions).
Technical specifications and dimensions
Overall dimensions North 420 It is easy to transport on a passenger trailer or even on the roof of the car (with powerful arcs and fasteners). The hull is 4200 mm long, which is the “golden mean” for boats of this class: it is already enough to go to large water, but does not yet require registration in GIMS (although registration is desirable for safety and compliance with laws).
The hull weight is a critical parameter for many anglers: the base version has a dry weight of about 110-120 kg, which allows you to load the boat alone using roller coasters, but with the installation of additional equipment, anchor box and motor, the total weight can increase significantly. Load capacity The model is officially declared as 400 kg, but experienced water engines recommend not to exceed the load of 300-320 kg for maintaining high driving performance and safety.
☑️ Checking when buying a used
Below is a detailed table of specifications that will help you compare North 420 with competitors:
| Parameter | Meaning | Note |
|---|---|---|
| Longest length | 4200 mm | Excluding the attachments |
| largest width | 1600 mm | Midel-spangout. |
| Height of board | 450 mm | Including bending |
| Weight of the hull (empty) | ~115 kg | Depends on the thickness of the metal. |
| Passenger capacity | 3 people. | Officially, real till 4. |
Modifications: tiller or Console?
The manufacturer offers several options, and the choice between them determines the comfort of further operation. squirt-board The rompel-controlled is a classic for single anglers, and the lack of a console frees up maximum space in the cockpit, allowing you to move freely and fish off the board, and the motor is controlled directly by the rompel, which is addictive, but gives you complete control of the traction.
The steering version (console) changes the ergonomics dramatically, and it allows you to install the windshield, the dashboard and the driver's seat more comfortable. North 420 But if you put a console in, it eats up some of the useful space and adds sailing, which can affect stability in strong side winds.
There are also transom-enhanced modifications that are sharpened to fit powerful motors. If you plan to put an engine with a capacity of more than 15 hp, make sure that the version chosen has the appropriate amplification, otherwise constant vibration and load can lead to fatigue destruction of the metal in the area of the lower unit mount.
- 🎣 tiller: Ideal for fishing, maximum space, minimum weight.
- 🚤 Console: Comfort for cruising, protection from splashes, the ability to install sonar and navigation.
- ⚓ Enhanced: Designed for engines 20-30 hp, has additional scarves on the transom.
Driving qualities and compatibility with motors
On the water. North 420 The flat bottom with small cheekbones provides excellent planing even with low-power engines (from 5 hp). However, the flatbed has the opposite side: on the wave the boat begins to tremble and prowl if the speed is not enough for confident planing. Resilience in the parking lot high - to stand up in full growth and throw the tackle can even a beginner, without risking to turn over.
The optimal engine power for this model lies in the range of 9.9 - 15 hp With such an engine, a boat with one or two passengers easily goes to the plane and holds a cruising speed of 25-30 km / h. Installation of a motor with a capacity of 20-30 hp makes sense only when full load or the need to tow a water skier, but this dramatically increases fuel consumption and noise.
⚠️ Attention: When installing a motor with a capacity of more than 10 hp, it is strongly recommended to use a hydraulic lift (hydronawn) or at least a high-quality stop for a lower unit. Constant work with a back leg at high speeds can lead to cavitation and overheating of the engine, as well as damage to the anti-cavitation plate.
For those who like quiet fishing, electric motors are great, because they're lightweight and they don't have vibrations. North 420 With electric power, it becomes the perfect platform for trolling or catching in ICE-free zones, and a 100-Ah battery life is usually 4-6 hours of active travel.
To improve the driving performance on the planing, try to install transax plates or hydrofoil on the lower unit engine, which will help you get into mode faster and reduce yaw on the course.
Tuning and improvement DIY
Owning an aluminum boat is a constant creative process. North 420 They don't stop at the factory, they add comfort and functionality, and the most popular design is to put soft linings on cans and boards, and aluminum cools down quickly and conducts heat/cold, so it's uncomfortable to sit on bare metal in cool weather.
The second stage of tuning is usually about organizing space, putting the knobs under the seats, removing gear, anchors and spare parts from under the feet, freeing the cockpit, and often changing the regular oars to lighter composite or wooden ones, since factory aluminum oars can be heavy to maneuver in calm.
And don't forget to protect, and if you put a keel-proof rubber or an additional metal profile, you can save the bottom from sharp stones and snags when you land on an unequipped shore, and this is especially true for shallow rivers where you can see the waters. boat hull He's taking the main hits.
- 🪑 Comfort: Soft seats with mounts, backs, awning from the sun and rain.
- 🔦 Lights: Installation of LED tapes along the perimeter of the cockpit and running lights for night fishing.
- 🔋 Electric: Insert 12V sockets for charging phones and connecting sonar.
⚠️ Attention: When drilling holes in the hull to install additional equipment, be sure to use a sealant for shipwork (for example, polyurethane-based). Conventional silicone will begin to peel off after the season, which will lead to water intake.
Security and maintenance
Despite its high strength, North 420And as with any boat, it's a safety requirement, and having life jackets in terms of the number of passengers is not just a requirement of the law, it's a necessity. Aluminum doesn't sink, but an overturned boat on cold water is a serious threat to life.
Regular maintenance consists of visual inspection of the seams and rivets (if any). After each release, especially in salty environments, it is advisable to rinse the boat with fresh water. North 420 It is better to upside down under a canopy or indoors to exclude the accumulation of moisture and debris inside the housing.
Special attention should be paid to the condition of the mounts of the cans and the tanning board. Vibration when moving on the motor can weaken the bolt joints. Periodic stretching of the fastener is a simple procedure that takes 10 minutes, but prevents many problems in the future.
Timely prevention and proper care of the aluminum hull extend the life of the boat to 20-30 years or more, maintaining its liquidity in the secondary market.
Do I need to register North 420 in the GIMS?
According to the current legislation of the Russian Federation, boats with a mass of running order of more than 200 kg OR with an engine of more than 8 kW (about 10.8 hp) are subject to registration. Since the weight of the empty North 420 is about 115-120 kg, registration is not formally required when installing the engine up to 10 hp inclusive. However, the presence of a motor more powerful than 10 hp or the transportation of cargo that brings the total weight beyond 200 kg requires the owner to have registration documents.
What is the maximum wave size of a boat?
The North 420 design belongs to the class of river and lake boats. Comfortable and safe navigation is possible at a wave height of 0.5-0.7 meters. With a larger wave, the flat bottom begins to hit the water hard ("dolphin"), which can lead to damage to the hull, loss of control or injury to passengers. Going out on open water during a storm warning on such a boat is strictly prohibited.
Can I cook or solder the body on my own?
Self-repairing by soldering with tin or lead for the AMg5M is inefficient and unreliable due to the aluminum oxide film. For quality repair of holes or cracks, argon-arc welding (TIG) using the corresponding alloy filler wire (for example, Sv-AMg6) is required. If you do not have aluminum welding skills, it is better to contact a specialized workshop, since improper heating can release the metal and reduce its strength.
Which anchor is best used for North 420?
For a boat weighing about 120 kg and a length of 4.2 meters, the best choice would be an anchor weighing 3-4 kg. Anchors of the Cat type (for rocky bottom) or Denfort / Hall type (for sandy and muddy bottom) are well-proven. It is important to have a spare anchor or a reliable way of anchoring, since during the current or in the wind a light boat can quickly demolish.