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Marine Hydraulic Hatch Cover 8.19m x 2.43m (Technical supply specification)


1. General Data (Operating Conditions)

Operating temperature range in accordance with GOST 24389 for the Lake Baikal navigation area:

  • Outdoor air temperature (winter): −30°C at 65% relative humidity
  • Outdoor air temperature (summer): +36°C at 85% relative humidity
  • Seawater temperature (winter): +1°C
  • Seawater temperature (summer): +19°C
  • Winter layup in heated berths (+12°C inside lined compartments) at an outdoor air temperature of −55°C with 85% relative humidity and a seawater temperature of 0°C

Wind speed (gusts): up to 24 m/s


2. Purpose

Opening/closing of the vessel side shell opening.

Marine hydraulic hatch cover, clear opening 8.19 m x 2.43 m, isometric view
Marine hydraulic hatch cover, clear opening 8.19 m x 2.43 m, isometric view

About

Structural Role of the Marine Hatch Cover

The marine hatch cover is specialized equipment designed to open and close the vessel side shell opening. The mechanism operates in regions with variable climatic conditions, ensuring synchronized operation with all structural elements of the vessel.

Design and Integration

A key feature of the marine hatch cover is its capability to operate in conjunction with the vessel hull structures, minimizing modifications to the existing structural arrangement. The selected materials and fastening methods ensure long-term operation even under the challenging climatic conditions typical for inland waterways and lake regions.

Compatibility and Operation

The marine hatch cover integrates with the vessel control systems and other machinery, ensuring convenient and coordinated operation. This solution is specifically required in regions where intensive vessel operation and frequent maneuvering demand seamless synchronization of all movable structural elements.

Engineering and Manufacturing

Izhora Hydrosystems LLC designs and supplies these assemblies tailored to the operational specificities of inland waterways, where water and air temperatures vary significantly throughout the year. The equipment design is adapted for installation on various vessel types, including the stern area and the port side within the tender garage zone.

Market Relevance and Outlook

The marine hatch cover remains a highly demanded solution for vessel modernization and operational optimization, combining proven engineering designs with adaptability to diverse operating conditions.


3. Scope of Supply

3.1 Marine Hatch Cover, Clear Opening 8.19 m x 2.43 m

3.1.1 Product Composition

ComponentQuantity
Marine hydraulic hatch cover assembly1
Side hatch cover panel1
Hydraulic power unit1
Hinges for securing the side hatch cover panel to the vessel structure1
Side hatch cover drive — hydraulic cylinders with counter-fastenings to the vessel structure1
Set of levers, guides, etc.1
Hydraulic system kit (hoses, fittings, valves, and other equipment ensuring device operation)1
Control cabinet1
Securing mechanism for the side hatch cover panel in stowed position1
Fasteners1
Spare parts, tools, and accessories (SPTA) kit1
Marine hydraulic hatch cover, clear opening 8.19 m x 2.43 m, general arrangement drawing, closed position
Marine hydraulic hatch cover, clear opening 8.19 m x 2.43 m, general arrangement drawing, closed position

3.1.2 Main Parameters

ParameterValue
Control typeLocal (from tender garage)
Opening directionUpward
Primary structural steel materialSteel grade 09G2S to GOST 19281-2014
Clear opening L x W8197 × 2435 mm
Total weight (complete assembly)2000 kg
Rated flow of main pump32 l/min
Rated flow of auxiliary pump32 l/min
Operating pressure of main pump21 MPa
Operating pressure of auxiliary pump0.2 MPa
Electric motor power15 kW

3.1.3 SPTA Kit

Manufacturer’s standard for 1 year of operation — 1 set.

3.1.4 Documentation

DocumentQuantity
Technical passport1
Installation and operating manual1
Onboard testing procedure and program1
Factory acceptance test report1
SPTA list1

3.1.5 Certificates

RCO Certificate — 1 copy.

Marine hydraulic hatch cover, clear opening 8.19 m x 2.43 m, general arrangement drawing, open position
Marine hydraulic hatch cover, clear opening 8.19 m x 2.43 m, general arrangement drawing, open position

4. Additional Requirements

  • The marine hatch cover ensures stable operation under the specified operating conditions.
  • The marine hatch cover provides opening/closing of the vessel side shell opening within the port side tender garage zone.
  • The marine hatch cover is installed on the port side in the stern area of the vessel. The drive mechanism is fastened to the boat deck hull structures from the tender garage side.
  • The hatch cover drive mechanism does not interfere with the operation of the pleasure craft launch and recovery systems (LARS).
  • Operation of the device is intended only when the vessel is at berth.
  • The side hatch cover panel is secured in the stowed position to the vessel side shell opening structure.
  • The side hatch cover panel is locked in the open position.
  • The marine hatch cover complies with the requirements of the RCO Rules and the “Technical Regulation on the Safety of Inland Water Transport Objects” (approved by Decree of the Government of the Russian Federation No. 623 dated August 12, 2010). It is delivered to the vessel with RCO certificates.
  • The coating system complies with RCO requirements.
  • Equipment painting is determined during the contracting phase with the customer.
  • All supplied components are suitable for indoor storage for 12–18 months.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

12 months from the delivery date, unless otherwise specified in the contract.


Contacts

  • Phone: +7 (812) 339-61-68
  • Email: contact@i-hydro.tech