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Dual-beam overhead telescopic LARS, 60t capacity, for manned submersible (Technical supply specification)


1. General Data (Operating Conditions)

The dual-beam overhead LARS ensures reliable operation under the following marine conditions:

  • Ambient air temperature: -30 °C to +40 °C
  • Relative humidity: max. 60 % at +30 °C; max. 85 % at -30 °C
  • Sea water temperature: max. +32 °C, min. -2 °C
  • Permanent heel: up to 5° to either side
  • Permanent trim: up to 2° by bow or stern
  • Wind pressure: max. 400 Pa
  • Shipboard vibration
  • Intermittent sea water splashing

Operating conditions in stowed position:

  • Ambient air temperature: -35 °C to +45 °C
  • Vessel heel: up to 15° to either side
  • Vessel trim: up to 5° by bow or stern
  • Wind pressure: max. 2000 Pa
  • Shipboard vibration

2. Purpose

The dual-beam overhead LARS is designed for the launch and recovery of a manned submersible.

Dual-beam overhead telescopic LARS, 60 t capacity, side view dimensional drawing
Dual-beam overhead telescopic LARS, 60 t capacity, side view dimensional drawing

About

Telescopic Dual-Beam LARS: An Advanced Solution for Marine Research

Marine research and submersible operations demand reliable, high-precision equipment. The dual-beam overhead telescopic LARS is designed for the safe launch and recovery of manned submersibles under all sea conditions.

Stability and Reliability in All Marine Conditions

Modern marine operations encounter temperature fluctuations, severe vessel motions, and wind loads. The dual-beam overhead LARS ensures stable operation and precise control both during deployment and in the stowed position, rendering operations predictable and safe.

Functionality and Purpose

The primary function of the equipment is the controlled handling of a manned submersible. The dual-beam telescopic design minimizes oscillations and ensures smooth launch and recovery, which is critical for scientific research, rescue operations, and deep-sea maintenance.

Izhora Hydrosystems LLC: Expertise and Innovation

The LARS is manufactured by Izhora Hydrosystems LLC, a company with extensive shipbuilding experience and advanced engineering solutions. All assembly units are rated for heavy-duty operation, and the scope of supply includes all components required for installation, commissioning, and safe maintenance.

Efficiency and Operating Advantages

The telescopic LARS enhances the efficiency of marine submersible operations. It reduces launch and recovery cycle times, protects the crew and equipment, and ensures mission accomplishment under all sea conditions with minimal risk. Reliability and ease of operation make this LARS an essential asset for research and technical operations.


3. Scope of Supply

3.1 Dual-beam overhead LARS, 60 t capacity at 8.5 m outreach

3.1.1  Bill of Materials

ComponentQuantity
Steel structures (booms, frames) forming the LARS1 pc
Driven winch1 pc
Limit switches1 set
Hoisting wire ropes1 set
Portable remote control pendant with 5 m control cable1 pc
Hydraulic power unit1 set
Local control panel/cabinet (includes main power switch)1 pc
Rigging blocks1 set
Quick release hook (stainless steel)2 pcs
Swivels1 set
Dual-beam overhead telescopic LARS, 60 t capacity, top view dimensional drawing
Dual-beam overhead telescopic LARS, 60 t capacity, top view dimensional drawing

3.1.2 Technical Data

ParameterValue
Safe working load (SWL)60 t
Outreach8.5 m
Submersible hoisting speed by winch motor10 m/min
Lowering (hoisting) depth, min.10 m
Main power supply / Enclosure rating380 V, 50 Hz, IP56
Sea state, max.4
Wind load (load above water surface), up to400 Pa
Total weight of LARS (excluding hydraulic fluid and foundation)28 t
Classification society compliance (Marine Register)Yes
Submersible dimensions13.5 x 3.8 m

3.1.3 Spare Parts, Tools and Accessories (SPTA)

Manufacturer’s standard for 3-year operation — 6 sets.

3.1.4 Documentation

DocumentQuantity
Certificate / Passport1
Installation, commissioning, and adjustment instructions1
Operating manual1
Shipboard test program and procedure1
Factory acceptance test (FAT) report1
List of SPTA1

3.1.5 Certificates

RMRS Certificate (RS Certificate) Form 6.5.30, Gosudarstvenny Tekhnichesky Nadzor (State Technical Supervisory Body) of the Russian Navy acceptance — 1 pc.

Dual-beam overhead telescopic LARS, 60 t capacity, rear view dimensional drawing
Dual-beam overhead telescopic LARS, 60 t capacity, rear view dimensional drawing

4.  Additional Requirements

  • All equipment is provided with counter-connections for piping system installation. All ports are fitted with standard blanks.
  • Instruction plates, warning signs, labels, and mimic diagrams are in Russian.
  • The scope of supply includes spare parts, consumables, and tools required for initial commissioning and one year of operation, as well as specialized tools for overhaul, adjustment, assembly, disassembly, and installation of the equipment.
  • The documentation package includes the RMRS Certificate (RS Certificate) Form 6.5.30, information on equipment supply limitations due to sanctions, and a non-disclosure agreement (NDA).
  • The documentation also specifies the installation testing procedure and the specialist training program.
  • Coating system: RAL color to be specified by the Customer.
  • The equipment complies with the requirements of the Decree of the Government of the Russian Federation No. 719 “On Confirmation of Industrial Production within the Territory of the Russian Federation” including all applicable amendments.

5. Manufacturer

Izhora Hydrosystems LLC


6. Warranty Period

5 years from the date of shipment, unless specified otherwise in the contract.


Contacts

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