Launch & Recovery System (LARS)

2 Diver Basket Launch & Recovery System (LARS)

Designed to safely deploy/ recover divers with equipment over-the-side from the dive control location (Dive Support Vessel (DSV), fixed installation, Jack-Up Barge (JUB) to the subsea dive site, down to a maximum working depth of 50m.

The LAR system typically consists of an A-frame complete with base. Including the HYDRA 650/0.65 series offshore man rider winch is based on the 1300 series frames and drums capacity. Furthermore two hydraulic power packs situated on the A-frame skid directly beneaththe winch and control station.

A diving 1.2 1.2m diving cage with overhead protection frame fitted with 1 x 50 litre 200 bar cylinder. A cylinder is included as part of the cage with 1st stage, 2 x DV’s, and 2 x ¼ inch pneumo hose for emergency use.

DIVING CAGE - 2 MAN

HYDRAULIC POWER PACK

HYDRAULIC POWER PACK

SYSTEM SPECIFICATION

Dimensions per frame:

  • Length 3.25 m
  • Width 2.15 m
  • Height 4.50 m (when installed on vessel)
  • Weight 5.5 tonnes
  • 1.3 ton rated A-frame for lifting the basket and guide-weight
  • Hydraulic rams with stainless steel shafts for luffing the A-frame
  • Hydraulic power pack mounted on rear of skid
  • Winches mounted above or to the side of the power pack on the rear of skid
  • Guide wire and main dive cage ropes route directly to sheaves on top
  • of the A-frame
  • 2 man Dive Basket
HYDRA 1000/1.0 OFFSHORE MAN RIDER SERIES WINCH

The HYDRA 1000/1.0 series offshore man rider winch is based on the 1300 series frames and drums capacity. The winch specifications are as follows:

  • Minimum lift capability: Hydraulically set to 1,0 Ton (1000 kg)
  • Maximum lifting speed: operator controllable up to 18m per minute
  • Wire diameter: 13mm non-spin
  • Wire length: 80m
  • Drive system: Direct hydraulic

Braking

  1. Shaft mounted non rotating multi disc internal motor brake.
  2. Hydraulic over-centre valve
  3. Automatic hydraulic band brake
  • 1.2 x 1.2 meter Diving cage with overhead protection frame.
  • Cage includes diving cylinder securing ring and safety gate.
  • Hand holds and emergency recovery hard point
  • Safety lifting points welded to the top of the basket for emergency recovery
  • Fitted with 1 x 50 litre 200 bar cylinder. (Cylinder included as part of the cage with 1st stage, 2 x DV’s, and 2 x ¼ inch pneumo hose for emergency use)
  • Brass guide-wire clamps.
  • Cage is manufactured from steel angle sections and hot dipped galvanized for marine corrosion protection.
  • Manufacturer: Unique Hydra
  • Model: LR50
  • Serial Number: 11/05319
  • Max Working Depth: 50 m
  • SWL: 1300 kg
  • Main Supply: 440V, 60Hz, 11kW
  • HSS-03, 04-LARS deployed as set (Main Diver(s) and Standby Diver)
HYDRA 650/0.65 OFFSHORE MAN RIDER SERIES WINCH

The HYDRA 650/0.65 series offshore man rider winch is based on the 1300 series frames and drums capacity. The winch specifications are as follows:

  • Minimum lift capability: Hydraulically set to 0.65 Ton (650 kg)
  • Maximum lifting speed: operator controllable up to 36m per minute
  • Wire diameter: 10mm non-spin
  • Wire length: 160m
  • Drive system: Direct hydraulic

Braking:

  • Shaft mounted non rotating multi disc internal motor brake.
  • Hydraulic over-centre valve
  • Automatic hydraulic band brake

The hydraulic power pack is situated on the A-frame skid directly beneaththe winch and control station. The power pack consists of the following:
Main fixed displacement gear pump and motor rated as follows:

  • 11kW power or as determined
  • 24 l/min at 210 bar (flow at 440V/60Hz) 380/440V 50/60Hz

Secondary fixed displacement gear pump and motor rated as follows:

  • 9.2kW power output or as determined
  • 19 l/min at 210 bar (flow at 440V/60Hz) 380/440V 50/60hz

1 x 150 litre main hydraulic oil tank and 1 x 100 litre standby hydraulic oil tank

  • Hydraulic Oil filter system
  • Low oil level cut out
  • High oil temperature cut out

The control station has the following controls:

  • A-frame luff out and in
  • Main wire winch in and out
  • Guide wire winch in and out

Two stainless steel electrical control boxes (1 main and 1 emergency) are supplied for operating the system hydraulics.

  • Testing conforms with the latest guidelines laid out in D018 Code of Practice for the Initial and Periodic Examination, Testing and Certification of Diving Plant and Equipment
  • Follows requirements stated in D023 DESIGN for Surface Oriented (Air) Diving Systems
  • Hughes Subsea is a Diving and ROV contractor member of IMCA.
  • Hughes Subsea operates a certified integrated Business Management System comprising ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018, certified by DNV.
  • As a minimum all Hughes Subsea diving operations are conducted to IMCA guidelines.
DNVAssociation of Diving ContractorsIMCAInstitute of Explosives EngineersAchilles UVDB - Silver PlusAchilles Oil and Gas Europe - SilverAchilles UNCE - Silver PlusLloyds Register Approved Service SupplierConstructionline - Gold Member