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The self-propelled trailer is a specialized platform designed for the transportation of vessels positioned on keel blocks. The design integrates an onboard hydraulic power unit, a steering system, and a keel block lifting system. This integration allows for precision maneuvering under load and ensures reliable vessel lifting during transport preparation.
The Model 80 T trailer is engineered to transport vessels weighing up to 80 tonnes. Even load distribution across four wheel-hub units (4 wheels per unit) guarantees platform stability and reliability. The hydraulic motor system provides sufficient power for moving maximum loads, while the auto-leveling function ensures smooth and stable transportation under all conditions.
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Longitudinal are box-section welded girders that perform three key functions: supporting the vessel’s keel blocks and transferring the load to the ground via the wheel units. Mounted on the longitudinal beams are the wheel-hub assemblies, steering cylinders, lighting signals, and actuator control equipment. This integration ensures structural integrity and the stable operation of all systems during transport.
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The undercarriage design features four wheel units, each equipped with four wheels fitted with solid rubber tires on steel rims. Driven units with hydraulic motors are mounted at the rear, while steered/trailing units are at the front. Each unit is coupled to a hydraulic cylinder system that steers all four wheels synchronously. Independent control of the front and rear units ensures high maneuverability of the trailer during vessel transport.
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The power pack unites the main beams into a single structure and serves as a platform for all the trailer’s power and control systems. Key components are mounted on a welded main frame: a 147 kW diesel engine, a hydraulic power unit, an oil cooler, batteries, and control cabinets for both the engine and the trailer. The robust assembly and protective housing ensure the stable operation of all systems regardless of weather conditions.
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The removable tie bar ensures the secure fixing of the longitudinal beams, preventing them from spreading while the trailer is in motion. Thanks to its lightweight welded design made of square tubing and plate elements, the beam is easily carried by hand and quickly installed into its operating position.
The following documentation provided with the unit:
| Document | Quantity |
|---|---|
| Product Data Sheet | 1 |
| Installation Manual | 1 |
| Operating Manual | 1 |
| Spare Parts and Tools List | 1 |
Giant on Wheels: How the Trailer Transports 80-Tonne Vessels
Imagine a vessel that has just been launched or, conversely, hauled out of the water for repairs. How do you move this multi-tonne behemoth across the shipyard when it is resting on keel blocks—specialized supports? Use a standard tractor? It simply won’t fit underneath. This is where a remarkable machine comes into play: the shipyard trailer. This is not just a trailer, but a sophisticated engineering structure capable of not only carrying an 80-tonne load but also “diving” underneath it independently.
Why It Is More Complex Than It Seems
The main challenge in transporting vessels is their shape and weight. A boat or yacht does not sit on flat asphalt like a car; they are set on specialized keel blocks with complex geometries. To pick up such a load, the trailer must be more than just a platform—it is a U-shaped structure that straddles the keel block from both sides. At the same time, the entire system must be incredibly robust to withstand 80 tonnes, yet maneuverable enough to navigate confined shipyard spaces at speeds not exceeding 1 km/h.
What It Is Made Of
The entire structure resembles a giant construction set. The trailer’s foundation consists of three massive sections bolted together. Two of these are long steel beams (main beams) over 17 meters in length. Fabricated from high-strength steel, they bear the entire load, serving as the direct support for the vessel’s keel blocks.
Powerful wheel units are mounted on each main beam—eight wheels per side, totaling 16 wheels. Notably, half of these are drive wheels; they don’t just roll but propel the entire machine forward, powered by hydraulic motors concealed within the wheel assemblies. The third part of the structure is the power pack—the true heart and brain of the machine. It houses a 147 kW diesel engine (approximately 200 hp), the hydraulic power unit, fuel tank, batteries, and control cabinets. All these components integrate to form a single, synchronized mechanism.
How It Manages to Be So Flexible
To enable the trailer to position itself precisely under the keel blocks, engineers had to solve two problems: how to change the direction of travel and how to keep the platform level, given that shipyard surfaces are never perfectly flat.
To control direction, all wheels on the trailer are steerable. Furthermore, the front wheels are controlled independently from the rear, allowing the machine to turn almost on the spot, mimicking the movement of tracked equipment. The steering angle can reach up to 35 degrees.
The second challenge is addressed through hydraulics. Each wheel unit is not rigidly fixed to the frame but connected via a powerful hydraulic cylinder. These cylinders can raise or lower each corner of the platform independently. Tilt sensors (inclinometers) constantly monitor the frame’s position; if the trailer encounters an uneven surface, the automation immediately extends the necessary cylinders to keep the load strictly horizontal. The maximum cylinder stroke is 250 mm—sufficient to compensate for significant irregularities and to lift the keel block to begin transport.
How to Control It
There are two ways to operate this giant. The first is via a fixed control panel located directly on the power pack housing. It features all the necessary buttons, joysticks, and a touchscreen display that shows the system status. However, remote operation is far more convenient.
The second method is using a radio remote control, which looks like a professional, heavy-duty version of a remote for a model car. It includes an emergency stop button, a joystick for movement and front-wheel steering, and dedicated toggle switches for rear-wheel control. This allows the operator to walk alongside the trailer and observe all obstacles, which is critical during such complex operations.
Safety Features
Given that a 25-tonne trailer carries loads several times its own weight, safety is a top priority. It features several wheel-lock modes, and an audible and visual alarm activates automatically during movement to warn those nearby. An “Emergency Stop” button on the remote instantly halts all mechanisms. Should the engine stall or the hydraulics fail, a manual pump is provided to release brake pressure, allowing another tractor to tow the unit for repair.
This trailer is a prime example of how mechanics, hydraulics, and electronics merge into a single entity capable of performing tasks impossible for humans, making complex shipyard operations fast and safe.
| Parameter | Value |
|---|---|
| Dimensions: – Height, m – Width, m – Length, m | 1,4 m 5,64 m 17,13 m |
| Minimum support surface height, m | 1,23 m |
| Maximum trailer frame lifting height, m | 0,25 m |
| Frame horizontal leveling | Automatic |
| Travel speed, km/h, max | 1 km/h |
| Gradeability, %, max | 3 % |
| Total number of wheels | 16 |
| Number of drive wheels | 8 |
| Front and rear steering | Independent |
| Front and rear wheel steering angle, ° | ±35° |
| Control method | Radio remote control + stationary control panel on the trailer frame |
| Operating temperature, °C | -10°…+35° |
| Storage temperature, °C | -25°…+45° |
| Power unit type | Diesel engine |
| Power unit output, kW, max | 147 kW |
| Actuator drive type | Hydraulic |
| Weight, kg, max | 25000 kg |
The equipment complies with the following requirements:
Related
Personal Data Processing Policy
1. General provisions
This Personal data processing Policy is compiled in accordance with the requirements of Federal Law No. 152-FZ dated 27.07.2006 “On Personal Data” (hereinafter referred to as the Personal Data Law) and defines the procedure for processing personal data and measures to ensure the security of personal data taken by Izhora Hydrosystems Co. Ltd (hereinafter referred to as the Operator).
1.1. The Operator sets as its most important goal and condition for the implementation of its activities the observance of the rights and freedoms of man and citizen in the processing of his personal data, including the protection of the rights to privacy, personal and family secrets.
1.2. This Operator’s policy regarding the processing of personal data (hereinafter referred to as the Policy) applies to all information that the Operator can receive about website visitors https://i-hydro.ru .
2. Basic concepts used in the Policy
2.1. Automated processing of personal data — processing of personal data using computer technology.
2.2. Blocking of personal data — temporary termination of processing of personal data (except in cases where processing is necessary to clarify personal data).
2.3. Website – a set of graphic and informational materials, as well as computer programs and databases that ensure their availability on the Internet at a network address https://i-hydro.ru .
2.4. Personal data information system — a set of personal data contained in databases and information technologies and technical means that ensure their processing.
2.5. Depersonalization of personal data — actions as a result of which it is impossible to determine, without the use of additional information, the identity of personal data to a specific User or other subject of personal data.
2.6. Personal data processing — any action (operation) or set of actions (operations) performed with or without the use of automation tools with personal data, including collection, recording, systematization, accumulation, storage, clarification (updating, modification), extraction, use, transfer (distribution, provision, access), depersonalization, blocking, deletion, destruction of personal data.
2.7. Operator — a state body, municipal body, legal entity or individual, independently or jointly with other persons organizing and /or processing personal data, as well as determining the purposes of processing personal data, the composition of personal data to be processed, actions (operations) performed with personal data.
2.8. Personal data — any information related directly or indirectly to a specific or identifiable User of the Website https://i-hydro.ru .
2.9. Personal data authorized by the subject of personal data for distribution — personal data to which an unlimited number of persons have access by the subject of personal data by giving consent to the processing of personal data authorized by the subject of personal data for distribution in accordance with the procedure provided for by the Law on Personal Data (hereinafter — personal data authorized for distribution).
2.10. User — any visitor to the website https://i-hydro.ru .
2.11. Provision of personal data — actions aimed at disclosure of personal data to a certain person or a certain circle of persons.
2.12. Dissemination of personal data — any actions aimed at disclosure of personal data to an indefinite circle of persons (transfer of personal data) or familiarization with personal data of an unlimited circle of persons, including the publication of personal data in the media, placement in information and telecommunications networks or providing access to personal data in any other way.
2.13. Cross—border transfer of personal data is the transfer of personal data to the territory of a foreign state to the authority of a foreign state, a foreign individual or a foreign legal entity.
2.14. Destruction of personal data — any actions as a result of which personal data is permanently destroyed with the impossibility of further restoration of the content of personal data in the personal data information system and/or the material carriers of personal data are destroyed.
3. Basic rights and obligations of the Operator
3.1. The Operator has the right to:
— receive reliable information and/or documents containing personal data from the subject of personal data;
— if the personal data subject withdraws consent to the processing of personal data, as well as sending a request to terminate the processing of personal data, the Operator has the right to continue processing personal data without the consent of the personal data subject if there are grounds specified in the Law on Personal Data;
— independently determine the composition and list of measures necessary and sufficient to ensure the fulfillment of obligations provided for by the Law on Personal Data and regulatory legal acts adopted in accordance with it, unless otherwise provided by the Law on Personal Data or other federal laws.
3.2. The Operator is obliged to:
— to provide the subject of personal data, at his request, with information concerning the processing of his personal data;
— organize the processing of personal data in accordance with the procedure established by the current legislation of the Russian Federation;
— respond to requests and requests from personal data subjects and their legal representatives in accordance with the requirements of the Personal Data Law;
— to inform the authorized body for the protection of the rights of personal data subjects at the request of this body of the necessary information within 10 days from the date of receipt of such a request;
— publish or otherwise provide unrestricted access to this Policy regarding the processing of personal data;
— take legal, organizational and technical measures to protect personal data from unauthorized or accidental access to them, destruction, modification, blocking, copying, provision, dissemination of personal data, as well as from other illegal actions with respect to personal data;
— stop the transfer (distribution, provision, access) of personal data, stop processing and destroy personal data in the manner and cases provided for by the Law on Personal Data;
— perform other duties provided for by the Law on Personal Data.
4. Basic rights and obligations of personal data subjects
4.1. Personal data subjects have the right to:
— receive information concerning the processing of his personal data, except in cases provided for by federal laws. The information is provided to the personal data subject by the Operator in an accessible form, and it should not contain personal data related to other personal data subjects, except in cases where there are legitimate grounds for disclosure of such personal data. The list of information and the procedure for obtaining it is established by the Law on Personal Data;
— require the operator to clarify his personal data, block or destroy them if the personal data are incomplete, outdated, inaccurate, illegally obtained or are not necessary for the stated purpose of processing, as well as take measures provided by law to protect their rights;
— to put forward a condition of prior consent when processing personal data in order to promote goods, works and services on the market;
— to revoke consent to the processing of personal data, as well as to send a request to terminate the processing of personal data;
— appeal to the authorized body for the protection of the rights of personal data subjects or in court against illegal actions or inaction of the Operator when processing his personal data;
— to exercise other rights provided for by the legislation of the Russian Federation.
4.2. Personal data subjects are obliged to:
— provide the Operator with reliable data about themselves;
— inform the Operator about the clarification (update, change) of their personal data.
4.3. Persons who have provided the Operator with false information about themselves or information about another personal data subject without the latter’s consent are liable in accordance with the legislation of the Russian Federation.
5. Principles of personal data processing
5.1. The processing of personal data is carried out on a legal and fair basis.
5.2. The processing of personal data is limited to the achievement of specific, predetermined and legitimate goals. Processing of personal data incompatible with the purposes of personal data collection is not allowed.
5.3. It is not allowed to combine databases containing personal data, the processing of which is carried out for purposes incompatible with each other.
5.4. Only personal data that meet the purposes of their processing are subject to processing.
5.5. The content and volume of the processed personal data correspond to the stated purposes of processing. Redundancy of the processed personal data in relation to the stated purposes of their processing is not allowed.
5.6. When processing personal data, the accuracy of personal data, their sufficiency, and, if necessary, relevance to the purposes of personal data processing is ensured. The Operator takes the necessary measures and/or ensures that they are taken to delete or clarify incomplete or inaccurate data.
5.7. The storage of personal data is carried out in a form that allows determining the subject of personal data, no longer than the purposes of personal data processing require, unless the storage period of personal data is established by federal law, an agreement to which the subject of personal data is a party, beneficiary or guarantor. The processed personal data is destroyed or depersonalized upon achievement of the processing goals or in case of loss of the need to achieve these goals, unless otherwise provided by federal law.
| Purpose of processing | Informing the User by means of voice communication and e-mail |
|---|---|
| Personal data |
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| Legal grounds |
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| Types of personal data processing |
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7. Terms of personal data processing
7.1. The processing of personal data is carried out with the consent of the personal data subject to the processing of his personal data.
7.2. The processing of personal data is necessary to achieve the goals stipulated by an international agreement of the Russian Federation or a law, to carry out the functions, powers and duties assigned to the operator by the legislation of the Russian Federation.
7.3. The processing of personal data is necessary for the administration of justice, the execution of a judicial act, an act of another body or official subject to execution in accordance with the legislation of the Russian Federation on enforcement proceedings.
7.4. The processing of personal data is necessary for the execution of a contract to which the personal data subject is a party or beneficiary or guarantor, as well as for the conclusion of a contract on the initiative of the personal data subject or a contract under which the personal data subject will be a beneficiary or guarantor.
7.5. The processing of personal data is necessary to exercise the rights and legitimate interests of the operator or third parties or to achieve socially significant goals, provided that the rights and freedoms of the personal data subject are not violated.
7.6. Personal data is processed, access to which is granted to an unlimited number of persons by the subject of personal data or at his request (hereinafter referred to as publicly available personal data).
7.7. Personal data subject to publication or mandatory disclosure in accordance with federal law is processed.8. Procedure for the collection, storage, transfer and other types of personal data processing
The security of personal data processed by the Operator is ensured through the implementation of legal, organizational and technical measures necessary to fully comply with the requirements of current legislation in the field of personal data protection.
8. Procedure for the collection, storage, transfer and other types of personal data processing
The security of personal data processed by the Operator is ensured through the implementation of legal, organizational and technical measures necessary to fully comply with the requirements of current legislation in the field of personal data protection.
8.1. The Operator ensures the safety of personal data and takes all possible measures to exclude access to the personal data of unauthorized persons.
8.2. The User’s personal data will never, under any circumstances, be transferred to third parties, except in cases related to the implementation of current legislation or if the subject of personal data has given consent to the Operator to transfer data to a third party to fulfill obligations under a civil contract.
8.3. In case of inaccuracies in personal data, the User can update them independently by sending a notification to the Operator to the Operator’s email address
contact@i-hydro.ru
8.4. The period of processing of personal data is determined by the achievement of the purposes for which personal data was collected, unless another period is provided for by the contract or current legislation..
The User can withdraw his consent to the processing of personal data at any time by sending a notification to the Operator via e-mail to the Operator’s e-mail address contact@i-hydro.ru marked “Withdrawal of consent to the processing of personal data”.
8.5. All information collected by third-party services, including payment systems, means of communication and other service providers, is stored and processed by these persons (Operators) in accordance with their User Agreement and Privacy Policy. The subject of personal data and/or with the specified documents. The Operator is not responsible for the actions of third parties, including the service providers specified in this paragraph.
8.6. The prohibitions established by the subject of personal data on the transfer (except for granting access), as well as on the processing or processing conditions (except for obtaining access) of personal data permitted for distribution, do not apply in cases of processing of personal data in the state, public and other public interests defined by the legislation of the Russian Federation.
8.7. When processing personal data, the Operator ensures the confidentiality of personal data.
8.8. The Operator stores personal data in a form that allows determining the subject of personal data, no longer than the purposes of personal data processing require, unless the period of personal data storage is established by federal law, an agreement to which the subject of personal data is a party, beneficiary or guarantor.
8.9. The condition for the termination of personal data processing may be the achievement of the purposes of personal data processing, the expiration of the consent of the personal data subject, the withdrawal of consent by the personal data subject or the requirement to terminate the processing of personal data, as well as the identification of unlawful processing of personal data.
9. List of actions performed by the Operator with the received personal data
9.1. The Operator collects, records, systematizes, accumulates, stores, clarifies (updates, changes), extracts, uses, transfers (distribution, provision, access), depersonalizes, blocks, deletes and destroys personal data.
9.2. The Operator performs automated processing of personal data with or without receiving and/or transmitting the received information via information and telecommunication networks.
10. Cross-border transfer of personal data
10.1. Prior to the start of cross-border transfer of personal data, the Operator is obliged to notify the authorized body for the protection of the rights of personal data subjects of its intention to carry out cross-border transfer of personal data (such notification is sent separately from the notification of the intention to process personal data).
10.2. Before submitting the above notification, the Operator is obliged to receive relevant information from the authorities of a foreign state, foreign individuals, foreign legal entities to whom the cross-border transfer of personal data is planned.
11. Confidentiality of personal data
The operator and other persons who have gained access to personal data are obliged not to disclose to third parties and not to distribute personal data without the consent of the subject of personal data, unless otherwise provided by federal law.
12. Final provisions
12.1. The User can receive any clarifications on issues of interest concerning the processing of his personal data by contacting the Operator via e-mail
contact@i-hydro.ru
12.2. This document will reflect any changes to the personal data processing policy by the Operator. The policy is valid indefinitely until it is replaced by a new version.
12.3. The current version of the Policy is freely available on the Internet at https://i-hydro.ru .
