lt series lars data sheet - west marine...
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LT Series ROV LARS Data Sheet
West Marine Technologies Pte Ltd [email protected] (Doc Ref No: A00010120) Page 1 of 5
LT Series ROV Launch and Recovery System (LARS) are intended for launch and
recovery of TMS/ROV/Skid package with armored umbilical cable. There are three sizes of
A-frame, three sizes of winch and three types of HPU in the series.
A-frame SWL 6Te 8Te 11Te Winch Capacity 1200m of 37mm OD 1800m of 37mm OD 3600m of 37mm OD HPU Rating 86KW 149KW 152KW
Standard combinations are LT6-1200-86, LT8-1800-86, LT8-1800-149, LT11-3600-149 or
LT11-3600-152. Other SWL, umbilical capacity and HPU rating can be accommodated
upon request.
LT Series ROV LARS Data Sheet
West Marine Technologies Pte Ltd [email protected] (Doc Ref No: A00010120) Page 2 of 5
To ensure safe operation, all LTSeries LARS are designed with 3g Dynamic Amplification
Factor and intended for operation up to Sea State 6 condition / 4.5m Significant Wave
Height. However, to meet specific user requirements, it can be delivered with different
certification options:
Zoning: Safe Area or Zone 2
Operating Temperature: 0°C to +45°C or -20°C to +45°C
Certification: Class Approved or DNV 2.7.1, DNV 2.22, 3rd Party Witnessed
Load Test Certs
Other optional features include:
Remote Control: Wired or Radio Remote Control Belly Box
HPU Oil Tank: Painted Steel or SS316
Hydraulics Tubing: Painted Steel Tube or SS316
Hydraulics Fitting: Steel or SS316
HPU Cooling: Water or Air Cooled Heat Exchanger
Umbilical Cable Drum: Flat or Grooved (Lebus)
All LT Series LARS comes with a PLC (Programmable Logic Controller) system that
monitors umbilical bullet / docking latch position, tracks umbilical payout length and
controls levelwind position. All electronic sensors are maintenance free contactless
inductive type.
The A-frame comes with a very robust snubber (Motion Damper) with forward / aft
damping, vertical telescopic of one meter travel distance and rotate functions. The
snubber is equipped with active pneumatics air-bellow damper for the snubber “skirt” to be
able to actively engage/disengage the top of TMS or ROV. All tubing and hoses on the A-
frame are optimally routed, accessible and yet fully protected by the A-frame structure.
The snubber latch system is an elegant and simple fail-safe design where umbilical bullet
will dock automatically by spring action when being simply pull into position with the
umbilical winch.
LT Series ROV LARS Data Sheet
West Marine Technologies Pte Ltd [email protected] (Doc Ref No: A00010120) Page 3 of 5
A-frame / Snubber Specifications LT6 LT8 LT11 A-frame Design Double Linkage Design
Snubber Degree of Freedom 3 (Fwd/Aft Damping, Vertical Telescopic / Rotate)
Snubber Latch Fail Safe Bullet Pull Through to Latch
Snubber Depression on TMS / ROV Pneumatics Controlled Active Air-Bellow Damper
Snubber Latch SWL 6Te 8Te 11Te
A-frame Luffing SWL 6Te 8Te 11Te
SWL (Package in Water) 12Te 16Te 28Te
A-frame Weight 18Te 20Te 20Te
A-frame Base Width 3000mm 3235mm 3235mm
Clearance Between A-frame Leg 2040mm 2275mm 2275mm
A-frame Base Length 7200mm 7200mm 7200mm
Outboard Reach (Centre of Snubber) 4585mm 4485mm 4485mm
Oil Drip Tray Optional: Open / Drip Tray / Enclosed Bottom
LT8 A-‐frame
LT Series ROV LARS Data Sheet
West Marine Technologies Pte Ltd [email protected] (Doc Ref No: A00010120) Page 4 of 5
Winch Specifications 1200 1800 3600 Drum Capacity @ 37mm Cable OD 1200 meter 1800 meter 3600 meter
Line Pull @ Full Drum 8Te 11.5Te 15Te
Line Pull @ Core Drum 11Te 16Te 28Te
Brake Holding 18Te 24Te 33Te
Average Line Speed 30m/min 30m/min 50m/min
Weight 17Te 20Te 35Te
Width 3235mm 3600mm 3600mm
Length 2692mm 2692mm 2900mm
Height 2685mm 2685mm 2750mm
Standard Slip Ring Mounting Suits Focal 176/242 with OD 140.2mm
Umbilical Junction Boxes Mountings for 2 boxes on drum flange
Deck Cable Junction Boxes Mountings for 2 boxes on drum side stand
Level Wind Mechanism Contactless Induction Sensor / PLC Controlled
Oil Drip Tray Enclosed bottom with drainage outlet
LT1800 WINCH
LT Series ROV LARS Data Sheet
West Marine Technologies Pte Ltd [email protected] (Doc Ref No: A00010120) Page 5 of 5
HPU Model 86 149 152 Power Rating 86KW 149KW 152KW
Design Single Motor /
Pump (Open Loop)
Dual Motor / Dual Pump
(Open Loop)
Single Motor / Dual Pump
(Closed Loop) Tank Capacity 900 Liter 1200 Liter 1000 Liter
Maximum Operating Pressure 260 Bar 260 Bar 280 Bar
Weight Including Oil Note 1 3.5Te 4Te 4Te
Width 1600mm 2100mm 1800mm
Length 2100mm 2100mm 2300mm
Height 2300mm 2300mm 2300mm
Oil Drip Tray Enclosed bottom with Drainage Outlets Note 1 – Weight for Non Zone Rated Version, Zone 2 Rated add 250Kg
LT149 HPU