Any experienced boater knows that the space in the cockpit of a boat is not just a convenience, but a matter of safety and comfort during a long journey. Chaotically scattered life jackets, anchor flaps and fishing gear not only interfere with movement, but can cause injuries when you roll or brake sharply. lantern It becomes an indispensable element of ergonomics, which allows you to hide unnecessary objects and turn the void under the jar into a functional box.
Modern solutions for storage in boats range from simple wooden boxes to complex engineering structures made of composite materials with gas lifts and soft upholstery. competently designed locker Not only should the kunduks hold the most things, but they should also hold the weight of a sitting person without deforming under load, and in this article we will discuss in detail how to choose or make the perfect storage that will last for many years.
The key to designing is to consider the buoyancy and weight of the structure. If your boat flips over, a sealed rundock can play the role of an extra float, which is critical to survival. However, if you make it too heavy or leaky, it becomes an unnecessary burden, filling with water and weighting the vessel. So the choice of materials and accessories must be approached with special care, given the aggressive aquatic environment.
Materials for the manufacture of sea haunduct
The choice of material is the foundation of the durability of your design, and in constant contact with water, salt water spray, ultraviolet light and temperature changes, conventional building materials quickly become obsolete. Sea plywood It is considered a classic choice due to its strength and ability to hold fasteners, but it requires high-quality impregnation and coating, otherwise it will begin to layer.
Alternatives to wood are modern composites and plastics. ABS plastic and fiberglass They're completely inert to water, they don't rot or rust, but they're harder to handle at home without special equipment. AMg-5 or AMg-6They are also popular, especially for metal boats, as they are lightweight and not susceptible to corrosion, but require insulation from contact with other metals to avoid electrochemical reactions.
⚠️ Warning: Never use conventional pine plywood or chipboard to make a runduk, even with a powerful painting. moisture will inevitably penetrate the microcracks, and the material will swell, turning into rubble in one season.
For interior decoration and reinforcement of the structure often use moisture-resistant laminates or special boat paints. The use of light, but durable materials will create a roomy box that will not critically reduce the driving performance of the vessel.
Design features and drawings
Before you start to reveal materials, you need to create a detailed drawing or at least a sketch of the future product. squirt-board The standard height of the seat above the bottom is usually 35-45 cm, which determines the dimensions of the internal volume.
The design should be designed for dynamic loads, the seat should not bend under the weight of an adult, especially when passing a wave. ribsIf the kunduk is planned to be sealed, special attention is paid to the lid sealing system, which is often performed as a perimeter lock connection.
Example of lid load calculation
For a 100x40 cm lid designed for a human weight of 100 kg, the minimum thickness of marine plywood shall be 18-20 mm with a step of the ribs of not more than 30 cm.
Designing also requires technological holes for water runoff or ventilation, unless full leakage is required, and some models use removable partitions inside to divide space into compartments for small and large items, which optimizes storage and prevents items from rolling around the boat.
Step-by-step instructions for assembly yourself
The fabrication process begins with precise cutting of the material according to your drawings. All cuts must be smooth and processed to ensure that the parts fit tightly. The best way to connect the elements from plywood is to use epoxy adhesive in combination with stainless screws, which creates a monolithic and moisture-resistant structure.
The next step is to build the frame, and the side walls are assembled with the stiffened edges, and then they connect to the bottom, and the angles are controlled, and they have to be strictly 90 degrees, otherwise the lid may not fit in or sway, and after the main box is assembled, the lid, which is the most loaded element, is made.
☑️ Runduk assembly checklist
The final stage involves grinding, primering and painting the product with specialized compounds. If aluminum is used, the drilling and cutting sites are necessarily treated with corrosion-resistant compounds. A well-constructed assembly ensures that the harunduk will last for many years without repair.
Sealing and moisture protection
Tightness is the main parameter for a runduk, in which you plan to store dry clothing, electronics or food. The cover must press this seal with sufficient force, which is often used for latches, tumbler or locks such as Draw Latch.
All joints and seams inside and outside the structure are carefully sprayed with a polyurethane or silicone-based marine sealant. Conventional acrylic sealant will quickly lose elasticity and detach from vibration. Particular attention is paid to the entry points of fasteners - each screw must be "sealed".
⚠️ Warning: When using gas lifts to open the lid, make sure they are designed for marine applications. Conventional furniture gaslifts quickly rust and stop holding load.
To further protect the contents, you can use moisture absorbers or place smaller sealed containers inside the kunduk. Even the best quality kunduk can eventually pass a minimum amount of moisture through the micropores, so periodic checking of dryness inside will not hurt.
Comparison of types of rnduks: specifications table
To make it easier to determine the type of design you want to see in your boat, compare the main options. Each type has its advantages and disadvantages, depending on the material of the boat and the operating conditions.
| A type of runduk | Materials | Weight. | Tightness | Difficulty of manufacture |
|---|---|---|---|---|
| Classic wood | Sea plywood | Medium. | High (with processing) | Medium |
| aluminum | Aluminum alloy | Low. | Medium | High. |
| Plastic (ready) | ABS/Polyethylene | Low. | High. | Low (installation) |
| Composite | Fiberglass | Low/Mediocre | Very high. | High. |
As you can see from the table, the choice depends on your skills and the resources available. Wooden hazelnuts are easier to make yourself in the garage, whereas aluminum require welding or riveting skills. Ready-made plastic solutions are convenient, but may not fit the dimensions in a particular niche.
Installation and fastening in the boat
The proper attachment of the kunduk to the bottom of the boat is a guarantee of safety. When moving along the wave, an unfixed box turns into a dangerous projectile that can damage the board or injure passengers. The fastening should be reliable, but if necessary, allow the seat to be dismantled for cleaning or accessing the underground.
For wooden and plywood boats, bolts with wide washers are used to avoid breaking through the bottom material.RIB) special sleds or guides are often used to lock the kunduk in a certain position.
Use vibration insulation pads between the bottom of the haunduk and the floor of the boat, which will reduce noise and prevent the abrasion of materials when the engine vibrates.
It is also important to provide quick access to the contents. Runduk should not block emergency exits or access to important equipment. The optimal solution is to install fast-removable locks that allow you to remove the seat in one motion in an emergency.
Safe fastening of the runduk is more important than its capacity - unsecured cargo on the water is deadly.
Frequently Asked Questions (FAQ)
Can I use the jersey as an extra float?
Yes, if the harunduk is sealed and has sufficient volume, but it should not be relied on alone, it should be part of the overall buoyancy system, not the only means of salvation.
How often should the seals be checked?
It is recommended to carry out visual inspection and inspection of seals before each season, as well as after long parking in the open air.
Which castle is better to choose for sea hazel?
Stainless steel latches (AISI 316) or coated brass latches are best suited. Plastic locks quickly break down under ultraviolet light, and conventional steel rusts.
Do I need to drill holes in the bottom of the runduk for water drainage?
If the kunduk is not sealed, make sure that the water does not stagnate inside. If it is sealed, no holes are needed, but then you need perfect insulation of all the seams.
Will a regular silicone sealant be suitable for assembly?
For responsible nodes, it is better to use specialized boat sealants (polyurethane or MS polymers), as they have better adhesion and resistance to vibration.