Trenching Brochure - Wind Energy Network

trenching & Bespoke projects

trenching & bespoke projectsSMD is the world’s leading subsea trenching equipment supplier, committed to high quality andperformance, founded on thorough engineering and solid support. SMD offer the world’s largestrange of subsea trenching products. The trenching business stream supplies towed and selfpropelledvehicles, with a comprehensive range of in-house engineered launch and recoverysystems (LARS) and state-of-the-art control systems.SMD has delivered over one hundred subsea trenching systems spanning a thirty year period,developing a unique and comprehensive, world class product range with cutting edgetechnology. The success of these systems is reflected in repeat business from a valued,worldwide customer base. SMD seek to continuously improve and develop new products andnew technologies to satisfy the ever evolving technical challenges.Self Propelled SystemsThe self propelled systems include the Q-Trencher (QT) and heavy tracked trencher ranges. Q-Trenchers are SMD’s fourth generationtrenching ROV. Subsea power available ranges from 400 through to 2800hp all able to free fly with track upgrades. Heavy tracked trenchersare available in a range of chassis sizes and power ratings to suit trenching in hard ground up to 50MPa. Trenchers can be configured tocarry multiple tools, simultaneously or in interchangeable cartridges, including rock and clay chains, jetters, dredges, eductors and backfilltools to suit every soil combination.Bespoke, self propelled systems developed for customers include RT-1, the world’s most powerful subsea tractor . and UT-1, the world’slargest trenching remotely operated vehicle (ROV). RT-1 (180Te) was designed to trench 1.5m diameter pipelines to 2m deep in 100MPa rock.UT-1 (60Te) was designed to trench 1m diameter pipelines at water depths of 1500MSW.Q Trencher (QT) Range QT400 QT600 QT800 QT1000 QT1400 QT2800Weight in air (te) 9.5 17 19 21 30 60Installed Power (hp) 400 600 800 1000 1400 2800Jetting Power (hp) 200-350 440-540 640-740 840-940 1000-1200 2000MAX TRENCH depth (m) 1.5-2.0 2.5-3.0 2.5-3.0 2.5-3.5 2.8-3.5 2.0-2.5Product size (mm) 200 400 500 600 800 1000Length Excl. swords 3.8 5 5 5 7.8 7.8Width 3.2-4.6 4.2-5.0 4.2-5.0 4.2-5.0 6.5 7.8Height 2.5 3-3.3 3.3 3.3 5.0 5.6TRactor range BT800 BT1100 BT2100 BT2400 LBT800Weight in air (te) 35 50 60 180 60-75Installed Power (kW) 600 800 1600 2400 800trench depth (m) 1.0-2.3 1.0-3.0 1.0-3.5 2.0-6.0 1.0-2.0max diameter (m) 300 300 800 1500 250Length 13 13.5 14.5 22.5 13.5Width 6 6.0-7.5 7.5 13 10-12Height 5.4 5.5 5.5 9.6 9-10.7Tool Power (kw)Mechanical 300 400 800 1600 400Jetter 2x200 2x300 2x300 2x400 2x200DRedge (kw)1x50kw400m 3 /hr1x75kw600m 3 /hr2x75kw1200m 3 /hr3x75kw1800m 3 /hr1x50kw400m 3 /hr

Towed SystemsSMD’s towed systems are designed to burysubsea telecommunication and power cablesup to 350mm diameter and pipelines up to1500mm diameter. Available systems includethe Multi-Depth Plough (MD3) Heavy DutyPlough (HD3), Ultra Duty Plough (UD3) andMultipass Plough (MP) systems, suppliedwith tow load capability of 80, 120, 150, 250and 350Te.SMD Smart Ploughs (MD3, HD3 and UD3) allhave powered steering and variable depthcontrol to maximise cable protection. AllSmart Ploughs have optional jetting totransform progress rates in dense sands.The trenchingbusiness stream isdedicated to thesafe and efficientprotection ofsubmarine cablesand pipes.Telecom Power & Umbilical Cables Pipelinesplough range MD3 HD3-200 HD3-300 UD3 MP BPWeight in air (te) 22 35 45 120 140-180 100-120trench depth (m) 0.0-3.0 0.0-3.0 0.0-3.0 3.0-4.0 2.0-2.5 n/amax Tow load (Te) 80 150 150 250 350 200Product size (m)Length 9.1 13 15 20 18.5-21.4 17.8-19.7Width 5.1 6.3 6.5 8 9.8-11.75 9.4-11.3Height 4.4 6.6 6.6 9.5 8.5-9.65 8.0-9.3Minimum Bend Radius 1.5-2.0 2.0-3.5 2.5-5.0 5.0-6.0 n/a n/aBespoke SystemsCable Lay equipmentSMD can apply expertiseand experience to awide range of problemswhich require a subsearemotely operatedsolution or specialisthandling equipment.SMD has a long trackrecord of developinginnovative solutions,which mitigate riskby using, whereverpossible, a standardrange of components.Examples include RockDumping Fall Pipe ROV,Pipe Riding Jet Sled andExcavation vehicles.SMD has extensiveexperience of marinecable handling, havingsupplied numeroussystems over the lasttwenty years. Systemssupplied utilise bothhydraulic and electricdrive systems acrossthe complete range ofhandling equipment,including both linearand drum enginesystems. The SMD selffleeting drum isparticularly suited tosensitive cables.

QT 400/600/800/1000INSTALLATION AND MAINTENANCE ROVThe Q-Trencher (QT) 400, 600, 800 and 1000 remotely operated vehicles (ROVs) arebased on two aluminium chassis designs which provide high power trenching capabilityfor the burial of cables, umbilicals and small diameter pipes up to 3m deep in variouswater depths. The ROVs use variable high flow or high pressure jetting to optimise thetrenching to suit the anticipated conditions. Vehicles can be fitted with tracks and/or arear eductor to enhance burial of large diameter products, as well as a suite of tools formaintenance operations. With their high thrust, the vehicles are capable of rapid postlay survey.TRENCHERFEATURES• 400/600/800/1000hp of installed power• Up to 3m max trench depth capability• Up to 4 knot swimming for survey• 500, 1000, 2000 or 3000m maximum waterdepth available• Optional rear eductor for largeproduct burial• Optional track modules for hardground trenching• Variable high flow or high pressure jettingfor optimized trenching• Optional cable maintenance tools packageincl. manipulators, cable cutter and clamp• Comprehensive instrumentationand surveillance• Proven Curvetech TM components throughout• DVECS robust distributed control platformprovides reliable, ergonomic operationsand good diagnostics• Range of SMD designed A-frame basedLARS for standard and high sea states• Containerised control and power systemGENERALQT400 QT600 QT800 QT1000Depth rating2000-3000mswDimensionsLength (Excl. Swords) 3.8mWidth 3.2m-4.6mHeight 2.5mWeight in air (skids) 9.5 TeSubmerged WeightbuoyantMax Tow Load1500kg2000-2500msw5.0m4.2-5.0m3.3m17.0 TeBuoyant2100kg500-200msw5.0m4.2-5.0m3.3m19.0 TeBuoyant2100kg500-2000msw5.0m4.2-5.0m3.3m21 TeBuoyant2100kg

QT400 QT600 QT800 QT1000PERFORMANCEVertical Fore / Aft Lateral ROV power 1.5 knots3.5 knots3.0 knots400hp (300kW) total:1 x 400hp (300kW)4-polecurvetech HPUs1.5knots4.0 knots2.0 knots600hp (450kW) total:2 x 300hp (225kW)4-poleCurvetech HPUs1.5knots4.0 knots2.0 knots800hp (600kW) total:2 x 400hp (300kW)4-poleCurvetech HPUs1.5knots4.0 knots2.0 knots1000hp (750kW) total:2 x 500hp (375kW)4-poleCurvetech HPUsJetting SystemMain jet tooling configurationTwin leg jet tool with fwd/downward facing jets (sub seabed) and cable depressorTrench depth Width control - leg spanning(between inside of legs)50mm to 400 mm - remotely variableWater supplyForward jet toolConfiguration - twin jet device (above seabed) which jets down either side of productTrench depth - up to 1.0m (soil dependent)up to 2.0m legsup to 250kW (with tracks)0-2.0m standard,0-3m with extended swordstwin hydraulicallydriven water pumpsabsorbing up to 300kW freefly and 400kW tracked mode0-2.0m standard,0-3m with extended swordstwin hydraulicallydriven water pumps0-2.0m standard,0-3m with extended swordstwin hydraulicallydriven water pumpsOPTIONAL TRACK MODULESBolt on modules with hydraulically drivenPlastic track plates on standard running gearSpeed 0 to 2km/hr0 to 2km/hr0 to 2km/hr0 to 2km/hrOPTIONAL DREDGE SYSTEMTwin leg aft mounted eductor with Hydraulically driven dredge pump0 to 2.0m standard dredge depth CABLE TRACKING PACKAGECable detection and surveyTone detection TSS350Pulse induction TSS440O/A Sonar and camerasTSS440 Deployment hyd. actuated frameOPTIONAL CABLE TOOLS PACKAGE2 x 7 function manipulators Cable cutter - up to 100mm Cable clamp - up to 100mmSUBSEA ELECTRONICSElectronics pod - one atmosphere pressure vesselDepth rating Fibre optic MUX communicationConnection point for vacuum checking of seals Built in spare channels RS232, RS485, Ethernet 110V, 24V up to 3000mup to 3000m2000m*2000m** STANDARD ARRANGEMENT - BESPOKE SOLUTIONS AVAILABLE

QT 1400/2800The Q-Trencher (QT) 1400 and 2800 remotely operated vehicles (ROVs) are based on twohigh strength steel chassis designs which provide high power trenching capability forthe burial of cables, umbilicals and large diameter pipes up to 3m deep in variouswater depths. The ROVs use variable high flow or high pressure jetting to optimise thetrenching to suit the anticipated conditions. The QT 1400 can be fitted with tracks and/or a rear eductor to enhance burial of large diameter products, it can also be suppliedwith independent track bases for chain cutting trenching, core drilling or cutter dredgeapplications.TRENCHERThe QT 2800 is the world’s most powerful free-swimming jet trencher. With more than 2megawatts of total power, the trencher delivers 1.5 megawatts of jetting power.SMD offer a turnkey, integrated solution including SMD designed high sea state launchand recovery systems (LARS) and umbilical systems.FEATURES• 1400/2800hp of installed power• Up to 3m max trench depth capability• Up to 3 knot swimming for survey• 1500, 2000 or 3000m maximum waterdepth available• Optional rear eductor for largeproduct burial• Optional track modules for hardground trenching• Variable high flow or high pressure jettingfor optimized trenching• Proven Curvetech TM components throughout• DVECS robust distributed control platformprovides reliable,ergonomic operations andgood diagnostics• Range of SMD designed A-frame based LARSfor standard and high sea states• Containerised control and power system

QT 1400 Base ModulesMULTI TASK BASE MODULESThe Q Trencher (QT) 1400 system utilises a core buoyancy module with integral HPUs,thruster pack, water pumps, cameras, central control pod, etc. This can be attachedquickly and easily to various functional base modules which include, but are notrestricted to, jet trenching module, chain trenching module, core drilling module, cranedredge cutter module.TRENCHERThe base modules are connected to the core buoyancy module with mechanical linkagepins, wet connectors, water hosing and hydraulic piping where necessary for minimalchange-over time.SMD offer a turnkey, integrated solution including SMD designed high sea state launchand recovery systems (LARS) and umbilical systems. The LARS can be supplied withdeck transfer system for module change-out in sea state 3.Jetting• Track based jetting module for jetting insand and clay up to 100Kpa• Burial depth from 1m to 3m for cables andpipelines up to 800mm diameter.• Rear eductor system for trench clearing.• Depth of operations to 1500m and 3000m.Chain Cutting• Track based chain cutting module fortrenching in clays up to 250KPa• Burial depth from 1m to 2m with integraldepressor and cable handling equipment• Suitable for cables up to 200mm diameterand 3m MBR.• Depth of operations to 500m and 1000m.

Q-T 1400 Base ModulesCutting Dredge• Track based free fly crane mountedcutting head or jet cutter with integraldredging for site clearance operations.• Dredge pump capable of transportingup to 200m³/hr solids.• Depth of operations to 3000m.Core Drilling• Track based wire line core drilling modulefor soil investigations with 75mm drill rodsand up to 10te push force, together with drillcasings and CPT capability.• Supplied with subsea loaded drill magazinesfor drilling depth beyond 90m.• Depth of operations to 500m, 1000m, 2000mand 3000m.

MD3/HD3/UD3FLEXIBLE SLOT PLOUGHSThe Smart Plough range including the Multi-Depth Plough (MD3), Heavy Duty Plough (HD3)and Ultra Duty Plough (UD3), is recognised globally as setting the standard in cable ploughing,reliably trenching in most soils including sands, clays and soft rock. The range is designed tohandle cables up to 150, 200, 300 and 400mm diameter electrical cables and repeaters fortelecommunication systems. The ploughs come with a further range of cable MBR capabilityfrom 1.5m to 6.0m.Using patented technology, the ploughs are designedto minimise pull force requirements and provideeffective trenching capability from zero to 4m depth.Their performance can be enhanced with jetting androck ripping upgrades. Coupled with a tow winches,umbilical winches and wide angle A frames, SMDare able to supply a turnkey flexibles burial solutionfor a wide range of cable sizes and vessel tow loadtogether with cabel and handling systems suchas drum cable engines (DCEs) and linear cableengines (LCEs).FEATURES• 80 –250te max pull capability• 2-4m max trench depth capability• Product burial from 150 to 400mm dia.,1.5 to 6.0m MBR• Diverless subsea unloading• Diverless subsea loading• Emergency cable unload• Multi depth burial capability• Steering bridle +/- 12 degrees• Jetting system for enhanced burial in sand• Jetting thruster for positional accuracy whenlanding on seabed• Comprehensive instrumentationand surveillance• Optional kit for beach operations• Proven Curvetech TM components throughout• DVECS robust distributed control platormprovides reliable, ergonomic operaonsand good diagnostics• Range of SMD designed A-frame based LARSfor standard and high sea states• Containerised control and power system

GENERALMD3 hd3-200 hd3-300 ud3Depth rating2000mswDimensionsLength 9.1mWidth 5.1mHeight 4.4mWeight in air (std)22 TeSubmerged weight19 TeMax tow load80 Te1500msw13.5m6.3m6.6m35 Te30 Te150 Te1500msw15.0m6.5m6.6m45 Te39 Te150 Te500msw20.0m8.0m9.5m120 Te106 Te250 TePERFORMANCETrench depth Variable 0 to 3.0mMax. cable dia.20mm to 160mmMin. cable bend radius1.5-2.0mSteering.+/- 15 deg.Max repeater diameter380mVariable 0 to 3.0m30mm to 200mm2.0-3.5m+/- 12 deg.Variable 0 to 3.3m30mm to 300mm2.5-5.0m+/- 12 deg.3.0m to 4.0m200mm to 400mm5-6.0m+/-12degMECHANICALHigh strength steel chassisReplaceable wear-resistant steel wear partsStainless steel fittings and housingsTRENCHING SYSTEMConfiguration - passive parallel sided shareJetting - 250-500kWWater supply (approx) - 800m 3 /1600m 3 @ 6bar (approx)Plough share tip, knife jetting & forward jetting armDIVERLESS SUBSEA UNLOADINGCrane - knuckle boomSlewing depressor - to assist cable into shareFront bellmouth tines - load cable into front bellmouthJetting thruster - to assist landing over cableTipping trough - to assist with unloadingROV intervention panel - emergency unloadHYDRAULIC SYSTEMInstalled power15kWSmart heavy duty marine cylinders 361pm@250barDirectional and counterbalance valvesStainless steel, oil compensated valve packsStainless steel manifolds, pipes & fittingsMulti-spiral flexible hoses15kW36lpm @ 250bar15kW36lpm @ 250bar25kW45lpm @ 250bar

MPPIPELINE V PLOUGHThe Multipass Plough (MP) builds on SMD’s reputation for the continuous developmentof products. The MP sets the standard globally for multipass pipeline ploughing offeringremotely variable multipass capability. This allows the operator to remotely adjust thedepth during trenching. The plough system also includes SMD advancements such asHi-Tow points and the active share track, making the MP the most advanced pipetrenching technology in the world. Towing capability ranging 250te, 300te and 350tevessel pull, combined with the track drive and jetting ensures maximum burial capability.The ploughs are also available with air tank buoyancy for minimum ground pressure.FEATURES• 250 Te, 300 Te and 350 Te max tow load• 2.0-2.5m max. trench depth capability with multi-pass• 2x25 Te to 2x75 Te pipe handling capacity• Large pitch capability• Hi-Tow points reduce tow force requirements• Optional active share track reduces tow force requirements• Optional jetting on share reduces tow forces in sands• SMD powered steering• 1000m maximum water depth depth as standard• Comprehensive instrumentation and surveillance• Proven Curvetech TM components throughout• DVECS robust distributed control platform providesreliable, ergonomic operations and good diagnostics• Range of SMD designed A-frame based LARS forstandard and high sea states• Containerised control and power systemGENERALDepth ratingDimensionsLengthWidthHeightWeight in air (std)Submerged weightMax tow loadPERFORMANCETrench depthMax. product diameterSteeringSoft ground capability1000msw18.5-21.4m9.8-11.75m8.5-9.65m140-180 Te125-155 Te250/300/350 Te1st pass - 1.5-2.0m2nd pass – 2.0-2.5m700-1460mm dia.+/- 8 deg.5kPaat full trench depthMECHANICALConstructionWear partsOtherTRENCHING SYSTEMMain shareFixed mouldboardsShare trackOptional jettingUUHigh strength steel chassisReplaceable wear-resistant steelStainless steel fittings and housingsPassive blades35 deg. vee trench25 deg. slope spoil heapseither side of trenchreduces tow forcesup to 80 Te down forceup to 1400m/hr track speed150kWPlough share jettingupgrade to Umbilical and Winchupgrade to Power and Control System

BPPIPELINE BACKFILL PLOUGHThe Backfill Plough (BP) builds on SMD’s reputation for the continuous development ofproducts. The BP sets the standard globally for pipeline backfill ploughs, offering frontend loading, remotely variable mouldboard depth control, and rear driven compactingrollers. These features simplify operational requirements and allow the operator toremotely adjust the tow forces during backfill operations. The ploughs are alsoavailable with air tank buoyancy for minimum ground pressure.FEATURES• 120 Te, 160 Te and 200 Te max tow load• Rear driven compacting roller• Remotely driven mouldboard depth control• Optional front end loading• Detachable lift point• A frame stabilising frame• Hi-tow points reduce tow force requirements• SMD powered steering• 1000m maximum water depth• Comprehensive instrumentation and surveillance• Proven CurvetechTM components throughout• DVECS robust distributed control platform providesreliable, ergonomic operations and good diagnostics• Range of SMD designed A-frame based LARS forstandard and high sea states• Containerised control and power systemGENERALMECHANICALGENERALDepth ratingDimensionsLengthWidth (launch)HeightWeight in air (std)Submerged weightMax tow load1000msw17.8 –19.7m9.4-11.3m8.0-9.3m100-120 Te90-102 Te120/160/200 TeConstructionWear partsOtherBACKFILL SYSTEMMouldboardsHigh strength steel chassisReplaceable wear-resistant steelStainless steel fittings and housingsVariable bladesPERFORMANCESteeringSoft ground capability+/- 8 deg.5kPaat full trench depth

BT 800/1100/2100/2400INNOVATIVE TRENCHING TRACTOR SOLUTIONThe Burial Tractor (BT) range draws on SMD’s experience of track driven vehicles,trenching and product handling subsea to provide a soft to hard ground burial solutionin one neat package. The BT is a fully amphibious vehicle and comes equipped with aselection powerful chain cutter trenching tools, dredge pumps and jet legs. Well provenchain cutter deployment systems allow pre or post-lay burial of cables up to 300mmdiameter and 5.0m MBR, and pipelines up to 1.5m diameter.SMD offer a turnkey, integrated solution including SMD designed high sea state launchand recovery systems (LARS) and umbilical systems.FEATURES• 800/1100/2100/3200hp of installed power• From 30Te to 180Te air weight• Pre and post lay cable and pipeline burial• 3.0m Variable jetting capability with depressor• 2.0m to 3.0m chain cutter for hard groundup to 40MPa and 80MPa• Optional fore, mid and aft dredge pumps eachcapable of transporting up to 600m³/hr solids• 300mm max. cable/umbilical diameter withrear swords with 3.0-5.0m min. bend radiusdepending on burial depth• 1500mm max pipe diameters with pipehandling up to 75te each• Optional 3Tem crane manipulator withgrab/jet/dredge tools for intervention tasks• 1000m max. water depth as standard• Comprehensive instrumentation andsurveillance• Proven CurvetechTM components throughout• DVECS robust distributed control platformprovides reliable, ergonomic operations andgood diagnostics• Range of SMD designed A-frame based LARSfor standard and high sea states• Containerised control and power system

GENERALBT800 BT1100 BT2100 BT2400Depth ratingDimensionsLength (with tools)WidthHeightWeight in air1000msw13.0m6.0m5.4m35 Te1000msw13.5m6-7.5m5.5m50 Te1000msw14.5m7.5m5.5m60 Te1000msw22.5m13.0m9.6m180 TePERFORMANCETrench depth (jetting)Max. product diameterSpeed 0-250m/hrSoil types Sandsclaysrock1.0-2.0m300mmAll sands10 to 1000kPa1 to 40 MPa1.0-3.0m300mmAll sands10 to 1000kPa1 to 40 MPa1.0-3.5m800mmAll sands10 to 1000kPa1 to 80 MPa2.5m1500mmAll sands10 to 1000kPa1 to 80 MPaSoft ground capability (with buoyancy)Installed power12-20 Pa600kW total2 x 300kW HPU12-20 Pa800kW total2 x 400kW HPU14-25 Pa1600kW4.400kW HPU20-40 Pa2400kW total6 x 400kW HPUMECHANICALHigh strength steel chassisReplaceable wear-resistant steel wear partsStainless steel fittings and housingsTRENCHING SYSTEMConfiguration – single vertical hyd. drive chaincutter with separate rear jet tool.Trench Profile DepthWidthChain powerChain widthChain speed 0 to 4m/sHeavy duty chain with point attack picksForward dredge pump (spoil removal)Dredge spoil backfillspoil fed to cover cableJetting configuration –Water pumps supply hyd. deployabletwin-legged device either side ofcable with in-built depressor.Jetting powerJet leg depth2.0m0.5m300Kw600mm50kW 400m 32 x 200kW2.0m2.0 & 3.0m vert.0.6m400kW600mm1 x 75kW 600m 32 x 300kW3.0m3.0m0.6m800kW600mm2 x 75 kW 1200m 32 x 300kW3.0m2.0 & 2.5m ‘V’4.0m (90 deg.)3 x 400kW900mm3 x 75kW 1800m 32 x 400kW2.0m

LBTINNOVATIVE CABLE INSTALLATION SOLUTIONThe Lay and Burial Tractor (LBT) is based on the BT800 tractor specification and drawson SMD’s experience of track driven vehicles, trenching and cable handling subsea toprovide lay and burial solution in one neat package. LBT is a fully amphibious vehicleand comes equipped with a powerful chain cutter, spoil dredge pump and jet legs tosimultaneous lay and bury cable or post lay cable burial. LBT has a driven cable reelmounted on the vehicle itself and this means it can operate independently of the vesselwith only the umbilical attached. This has benefits in sectors such as offshore windfarm installation, significantly reducing installation time.FEATURES• 800kW of installed power• 1.0-2.0m depth jetting capability• 2.0m chain cutter• 250mm max. product diameter• 1.8-2.0m min. bend radius• High current stability (8 Knots)• Simultaneous and post lay burial• Fore Dredge pump with rear trenchbackfill function• 3Te m crane manipulator with jet/dredge tools• Comprehensive instrumentation andsurveillance• Proven CurvetechTM components throughout• DVECS robust distributed control platformprovides reliable, ergonomic operations andgood diagnostics• Range of SMD designed A-frame based LARSfor standard and high sea states• Containerised control and power systemGENERALDepth rating1000mswDimensionsLength (with tools) 13.5mWidth10.0-12.0mHeight9.0-10.7mWeight in air (no cable)60-75 TeCABLE REELCore dia.3.0-4.0mDrum width 2.3mCable capacity1000m (150mm dia. max.)Weight4te empty30 Te loaded, options for 40 Te and 50 TeHyd. drive1.5 Te @ 30m/min.Emergency brake3 Te on bottom wrap

espoke projectsBESPOKE SUBSEA SOLUTIONS AND SPECIALIST HANDLING EQUIPMENTSMD can apply expertise and experience to a wide range of problems which require asubsea remotely operated solution or specialist handling equipment. SMD has a longtrack record of developing innovative solutions, which mitigate risk by using, whereverpossible, a standard range of components and drawing on the experience of over 350subsea projects.Typical projects undertaken such as the fall pipe remotely operated vehicle (ROV)designed to control the positioning of an 800mm diameter, 2km long rock dump fallpipe with 600Kw of on board power. The system included dynamic positioning, pipefollowing and survey equipment.FEATURES• Feed studies• Special purpose design• Consultancy• Process design• Tooling design• Control system design• Simulation• Deck layouts• Machine selection

LARSLAUNCH AND RECOVERY SYSTEMS (LARS)SMD bring years of knowledge and experience to the design and manufacture of launchand recovery systems for some of the world’s largest subsea machines to offer a rangeof A-frames specifically designed for handling subsea trenching equipment. All haveattained Lloyds Design Approval and are tested according to Lloyds Rules.Wide Angle A framesSMD supply a large range of wide angle A frames which areutilised with a range of subsea systems including cable ploughsand trenching remotely operated vehicles (ROVs). Load ranges,from 20Te sea state 6 to 75Te sea state 5 are available. Wideangle A frames are particularly useful for cable plough systemsallowing the tow wire/lift wire to run over the central sheave,when the A frame is in board and towing.Wide angle A frames are also useful for trenching ROVdeployment maximising the free board height and thevessel clearance.Narrow Angle A framesSMD offer a very large range of narrow angle A frames whichare used for launching work class ROVS, trenching ROVS,tractors and pipeline plough systems. Load ranges from 8tonnes sea state 6, to 300Te sea state 5 are available. Narrowangle A frames are simple and robust systems minimisingmaintenance and weight.Umbilical WinchesSMD manufacture a range of umbilical winches capable ofhandling single wire armoured or buoyant umbilical cable, foroperating depth ranges up to 4000m. Non lifting umbilicalwinches are used to power a wide range of trenching equipmentincluding tractors, large cable ploughs and pipeline ploughs.