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The self-propelled trailer provides maneuverable handling for small craft weighing up to 25 tons. The design adapts to various hull types using interchangeable keel blocks, ensuring secure seafastening during transport.
A system comprising a diesel engine and hydraulic motors delivers torque to four drive wheels, guaranteeing reliable traction and stable movement even on challenging surfaces. The hydraulic drive and lifting hydraulics for the keel blocks provide smooth and precise operation, allowing for the safe handling of vessels at maximum capacity.
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Longitudinal beams are load-bearing welded box-section beams that transfer the load from the keel blocks to the ground and serve as the foundation for the trailer’s movement. They integrate key components: wheel units, steering hydraulic cylinders, lighting equipment elements, and operating hydraulics with electronics are mounted on them. The left and right beams are mirrored, ensuring even load distribution and system stability during vessel transport.
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Wheel units ensure reliable movement and maneuvering of the trailer with a load of up to 25 tons. The rear drive wheels are equipped with hydraulic motors, while the front driven wheels feature bearing units. Solid tires on steel rims guarantee stability and wear resistance under high loads.
Integrated hydraulic lifting cylinders precisely position and level the keel blocks under the vessel. The steering unit synchronously controls all eight wheels via a hydraulic drive, maintaining maneuverability even when operating at maximum capacity.
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The power pack connects the longitudinal beams and serves as the central hub for housing all control and power components of the trailer. The welded load-bearing frame integrates the diesel engine, fuel tank, batteries, hydraulic power unit, and control cabinet into a single compact system. The well-thought-out layout provides convenient access for quick maintenance, ensuring the stable operation of all systems.
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The removable tie bar ensures structural rigidity, preventing the longitudinal beams from spreading while the trailer is in motion. Its lightweight and ergonomic welded design allows the operator to effortlessly carry and precisely position the bar by hand, providing secure fastening without the need for specialized equipment.
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 |
Harbor trailer for under-vessel docking
Imagine the task: you need to move a 25-ton boat across a port area. Not just move it, but carefully transport it for maintenance or launching. It might seem that a powerful tractor is all you need. However, there is a catch: the boat rests on special supports called keel blocks, and conventional machinery cannot drive underneath it. It is like trying to lift a heavy wardrobe by sliding your hands under only one side — it simply won’t work. You need a design that can embrace the load from both sides and crawl underneath. This is exactly the challenge solved by this specialized 25-ton capacity harbor trailer.
Why it is more difficult than it seems
The main challenge lies in the shape of the vessel and its supports. The keel blocks supporting the ship have a complex geometry. The trailer cannot simply back up to them like a standard tractor to a semi-trailer. It must literally “merge” into this structure from below and the sides. Therefore, engineers came up with a clever solution: the trailer is not a single solid unit. It consists of three massive sections: the left and right longitudinal beams (long “girders” with wheels) and the power pack — the “head” that houses all key systems. When assembled, this machine reaches 17 meters in length and 5.5 meters in width, yet its minimum height is only about one meter. This clearance is enough to carefully slide under the keel blocks, like a sheet of paper under a door.
Design and components
Each longitudinal beam is more than just a steel girder. It is a sophisticated structure made of high-strength steel plates, carrying four heavy-duty wheels. To ensure maneuverability, the wheels can steer up to 35 degrees. The most notable feature is the load-bearing units connecting the wheels to the frame, which house integrated hydraulic cylinders. These act like muscles: they lift the entire structure to press the keel blocks against the frame and level the trailer when traveling over uneven port terrain. The power pack serves as the heart and brain of the machine. Its welded frame houses a 36 kW diesel engine, fuel tank, hydraulic power unit, batteries, and two electrical cabinets—one for engine management and the other for motion control. The entire assembly is protected by a specialized cover to shield it from rain and coastal humidity.
Operation and control
Imagine having to control four pairs of steering wheels simultaneously. Doing this manually with a steering wheel would be impossible. Instead, the trailer functions as a hydraulic robot. The operator manages the unit via a compact console—either a stationary panel on the machine or a portable radio remote control. The console features joysticks for movement and dedicated toggle switches for rear-wheel steering, allowing the trailer to pivot almost on the spot.
Self-leveling magic
The most impressive technology is the self-leveling system. Imagine the trailer has driven under the keel blocks and lifted them along with the vessel. The weight is distributed unevenly, and the port surface is far from perfect. If you simply start moving, the structure could tilt, risking damage or a fall. The system works as follows: upon the “Lift” command, the hydraulic cylinders extend by 250 mm. 70 mm is used to pick up the keel block, while the remaining 180 mm serves as the “operating range” for leveling. Specialized sensors—inclinometers—constantly monitor the frame’s position in space. If one corner dips, the computer instructs the hydraulics to extend the corresponding cylinder further to compensate for the tilt. The operator simply accompanies the trailer while the machinery ensures the load remains perfectly horizontal.
Safety systems
Given that a 13-ton trailer carries loads several times its own weight, safety is a top priority. It features several wheel-lock modes, and a visual and audible alarm automatically activates during movement to warn those nearby. The control panel includes an “emergency stop” button that 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 organism, capable of performing tasks beyond human strength while making complex port 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 | 1,07 m |
| Maximum trailer frame lifting height, m | 0,25 m |
| Frame horizontal leveling | Automatic |
| Travel speed, km/h, max | 1 km/h |
| Gradability, %, max | 3 % |
| Total number of wheels | 8 |
| Number of drive wheels | 4 |
| Front and rear wheel 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 | 36 kW |
| Actuator drive type | Hydraulic |
| Weight, kg, max | 13000 kg |
The equipment complies with the following requirements:
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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 .
