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Marine Boarding Ladder [Model: 1.9m x 0.9m]

The hydraulic drive of the boarding ladders provides automatic leveling of the steps and the stringer section, ensuring their horizontal position regardless of the ladder’s inclination angle. This enhances safety and ease of use. Various kinematic schemes and designs are available with a wide range of options to precisely match your requirements.

The marine boarding ladder ensures smooth and reliable hoisting and lowering thanks to its hydraulic system. Anti-slip steps maintain a horizontal position at any angle of the ladder’s inclination, guaranteeing safety and convenience. This allows for flexible adaptation of the design to various operating conditions.

Configuration

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Marine Boarding Ladder 3D Model Gantry

Gantry

(highlighted in blue)

The gantry is a welded metal frame mounted into the ship’s opening via weld-on plates. It integrates the extension and locking mechanism of the ladder section, protected by an all-metal housing. Removable housing panels with screw fasteners provide easy access to hydraulic equipment for maintenance.

Ladder section

(highlighted in blue)

The ladder section is a welded frame structure with an anti-slip coating. It features weld-on eyes for attachment to the gantry and weld-on sockets for mounting a quick-release safety railing system.

Marine Boarding Ladder 3D Model Ladder Section
Marine Boarding Ladder 3D Model Hydraulic Cylinders

Hydraulic cylinders

(Highlighted in blue)

The hydraulic control system incorporates six cylinders. Four small-bore cylinders provide smooth extension of the main section, minimizing friction and structural wear. Two large-bore cylinders are responsible for adjusting the angle of inclination. All cylinders are equipped with hydraulic pilot-operated check valves (counterbalance valves) for reliable platform fixation in any position.

Standard configuration and options

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Standard configuration:

  • Ladder assembly with hydraulic drives
  • Control cabinet, control panel
  • LARS hydraulic drives
  • Hydraulic power unit (HPU)
  • Hydraulic hoses and adapters
  • Corrosion-resistant identification plate

Optional:

  • Custom paint color
  • Hydraulic-actuated railings
  • Additional control stations
  • Other options upon custom request
  • Main structure materials: stainless steel, aluminum, structural steel

Documentation:

The following documentation provided with the unit:

DocumentQuantity
Product Data Sheet1
Installation, Commissioning, and Adjustment Manual1
Operating Manual
Onboard Test Program and Methodology1
Declaration of Materials (DM)1
Supplier’s Declaration of Conformity (SDoC)1

About

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When a Boarding Ladder Becomes Essential
Imagine standing on the deck of a large vessel. Below is the water, and a motorboat or tender has pulled alongside. How do you disembark? Jumping is dangerous and unprofessional. A rope ladder is for pirates, not for modern maritime operations. For safe boarding and disembarkation, a specialized structure is required: the side boarding ladder. It is far more than just a metal frame with steps; it is a sophisticated piece of engineering.

Why a Simple Ladder Is Not Enough
Whether a vessel is at anchor or moored, water levels are constantly shifting. Waves, tides, and the ship’s loading conditions all determine the height of the deck relative to the water. Consequently, a ladder must be adjustable—capable of hoisting, lowering, and changing its angle of inclination. Throughout these adjustments, it must remain stable and reliable, ensuring that personnel carrying equipment or luggage feel completely secure.

Design and Kinematics
How does it work in practice? Engineers have developed a simple yet highly effective design. The main component of the ladder is a welded frame, similar to a bridge. It is clad with metal sheeting to eliminate gaps and provide a clean, professional finish. This “bridge” is not fixed rigidly to the vessel but is hinged to allow movement. Powered by hydraulics, the ladder operates through a wide luffing range: from an upward inclination of +14 degrees to a downward reach of -50 degrees. This versatility ensures safe access to everything from low-profile tenders to high piers.

Operating and Stowed Modes
The entire assembly weighs over a ton—comparable to a small car. Manually operating such a mass is impossible, so a hydraulic power unit (HPU) handles the movement. Pressurized oil is fed into the cylinders, enabling smooth, jerk-free hoisting and lowering of the ladder. When the vessel is underway, the ladder is retracted to a horizontal “stowed” position, and the railings are removed to prevent interference or damage from wind and waves. For boarding, the ladder is deployed, and the handrails are quickly reinstalled. They feature a standard height of one meter to ensure ergonomic and safe passage.

Materials and Corrosion Resistance
Regarding safety, the materials are carefully selected—specifically stainless steel, which is resistant to saltwater, precipitation, and extreme temperature fluctuations. The design process is not arbitrary but follows strict regulations approved by the Russian Classification Society (RCS). This ensures the structure is backed by rigorous calculations and testing, guaranteeing it will withstand storms, heavy foot traffic, and years of continuous service.

Why a Modern Ladder Is More Than It Seems
Ultimately, a modern boarding ladder is far more than just a “plank with rungs.” It is a sophisticated mechanism that connects the vessel to the outside world. It can be stowed away when not in use and becomes a reliable bridge in any weather. If you ever find yourself on board, descending such a ladder to a tender, know that behind this simple action lies the meticulous work of engineers who have ensured that the challenges of the sea remain completely unnoticed.

Dimensions

Marine Boarding Ladder Dimensions Front View
Marine Boarding Ladder Dimensions Side View

Technical specifications

ParameterValue
Gantry height, mm2192 mm
Ladder width between handrails, mm900 mm
External gantry width, mm1352 mm
Ladder section length, mm1900 mm
Platform driveElectro-hydraulic
HPU rated flow rate, l/min10 l/min
Rated pressure, MPa12 MPa
Maximum pressure, not more than, MPa16 MPa
Hydraulic tank capacity, l25 l
Electric motor power3 kW
Gantry mountingBolted

3D simulation

General Requirements and Standards

  • The equipment complies with the «General Provisions for Technical Supervision» of the Russian Maritime Register of Shipping (RS) and is supplied with a Type Approval Certificate.
  • The equipment complies with the requirements of the Technical Regulation on the Safety of Maritime Transport.

Additional Requirements

  • Technical Requirements
    • Electrical equipment installed outdoors has an IP 56 protection class.
    • All materials are resistant to operating temperature conditions of +35 to –12 °C.
    • In the stowed position, the ladder is located on the starboard/port side of the vessel.
    • The swivel steps feature an anti-slip coating and remain parallel to the deck regardless of the inclination angle.
    • The folding platform and steps are automatically positioned horizontally.
  • Safety Features
    • All live parts are protected against accidental contact by personnel.
    • All components are grounded in accordance with regulations.
    • During operation, the ladder does not emit toxic substances exceeding permissible limits.
    • Fire safety is ensured by overload and short-circuit protection, as well as the use of non-combustible materials.
  • Service Life and Maintainability
    • Service life — 20 years.
    • Storage in manufacturer’s packaging — at least 3 years (in a dry, heated room).

Regulatory compliance

The equipment complies with the following requirements:

  • General Regulations of the Russian Maritime Register of Shipping (RS);
  • Technical Regulation on the Safety of Maritime Transport (Decree of the Government of the Russian Federation No. 620 dated August 12, 2010);
  • SP 2.5.3650-20 (Sanitary and Epidemiological Requirements for Transport);
  • Other applicable requirements of Russian legislation, including sanitary and veterinary regulations, occupational health and safety requirements, and industrial safety requirements;
  • The equipment also complies with all amendments and supplements in force as of the vessel’s keel-laying date (Decree of the Government of the Russian Federation No. 719);
  • Supervision of installation and commissioning services;
  • Confirmation of industrial product manufacturing within the territory of the Russian Federation (Decree of the Government of the Russian Federation No. 719 dated July 17, 2015).