dp workboats, a new era for multicats 2
TRANSCRIPT
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DP Workboats; An new era for multicat type workboats
DP Workboats; a new era for Multicat type vessels
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• Owner and operator of 40 workboats for coastal waters
• 40 years experience
• Independent company with a global presence
• Standard & custom built vessels
- Ultra shallow water
- Cable & pipeline (re)burial
• Headquarters in Den Helder, The Netherlands
Profile
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Truckable
Survey Multicats Crew Tenders
Shallow-draft Supply Multipurpose support
Our fleet Our fleet AH tugs
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Dynamic Positioning on workboats
• 2007, Acta Marine was the first operator installing DP on
workboats
• Currently 4 DP vessels in operation
• All vessels are ultra-shallow draft (draft < 2,0 m.)
• DP workboats are competing with standard OSV / PSV DP 2
vessels at a competitive workboat charter rate.
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Thruster set-up for Acta Marine workboats
For excellent position holding capabilities the DP workboats are
equipped with:
• Stern: 2 x fixed propellor & 1 x 360˚ rudder propellor
• Bow: 1 or 2 x 360˚ horizontal propellor/jet
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Workscope for DP workboats
C.Discovery- Nordstream
Backfil of trench; • Nordstream Pipeline, soil layers of 25 cm where backfilled in the trench • Maasvlakte 2, shallow area spray pontoon
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Workscope for DP workboats
Water jetting; Maasvlakte 2, cleaning breakwater for the installation of an additional concrete blocks layer
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Workscope for DP workboats
Offshore Oil & Gas maintenance; • Change out Offshore oil bunker hose GDF SUEZ EP • Removal and installation of splash zone constructions
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Workscope for DP workboats
WID / Mass flow trenching; Removed 30.000m3 sand per day in the port of Sidi Ifni Morocco
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Workscope for DP workboats
WROV Support platform; Explosive Ordnance Disposal German Wadden Sea OWF export cable route
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Workscopes for DP workboats
Vibrocoring/CPT survey; Murmansk Offshore pipeline route Sthokman field
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Additional workscopes for DP multicats
• Trenching with mobile trencher unit
• ROV support platform • Accommodation (12 additional to vessel crew) • Diving from 4p c/t anchor spread • Offshore access to constructions • (Heave comp) Crane works • Cable laying • Cable burial • Cable survey • Cable recovery and jointing • Cable protection deployment (Mattresses etc) • TP cable protection installation (Messenger wire technique)
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NON DP Cable & Pipeline (re)burial
● Post-lay technology - suction dredging with jetting - 4-point mooring - Life tracking of burial process
● Very effective and safe for shore-ends, crossings and exposed parts.
● Succesfully applied on “live” gas pipelines and power cables.
Remedial lowering of cables / pipeline
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Ultra shallow water specialism
Wadden Sea is our backyard
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Thank you for your attention Acta Marine B.V. Het Nieuwe Diep 39d 1781 AE, DEN HELDER The Netherlands T +31 (0)223 615666 www.actamarine.com