News

Deep Water Dredge

An overseas leading supplier of construction aggregate materials contacted us for the design of a deepwater marine aggregate dredge. Together with a local construction company DMOE took care about the complete design of this custom build dredge.

The dedicated project team wherein the client , the construction company and DMOE was represented took care about the design which has been evolved until the actual build.

Having a trustworthy relationship DMOE also took care about the delivery of certain components, e.g. nozzle’s, underwater engine, mechanical seal, dredge monitoring. Also during commissioning we’ve supported the local team of experts.

Mobilization Offshore Supply Vessel

For a new offshore contract of our client we took care about the complete mobilization from an offshore Research/Survey Vessel.

Besides an overhaul of the accommodation, complete new deck-arrangement, the removal of a 110 tons offshore crane also a Walk to Work system has been installed.

Due to the dedication of our team, the works commenced within one week notice and have been completed according to schedule.

Hopper Dredger Conversion

On behalf of the owner DMOE took care about the complete design and procurement for a conversion project of a trailing hopper dredger. The works started with a 3D scan, whereafter a complete detailed design (incl. pipe routing) was made. Based on the design works, materials/components were ordered, pre-fabricated and delivered to the Mediterranean. Under Client’s and DMOE’s supervision the works have been performed and the project is completed successful.

Archive

Project highlights

  • 8-4-2025 New HPU for Hydro hammer S70/S90
  • 14-3-2025 6 M3 Roundnose grab New-build
  • 15-2-2025 Spare Cutter and teeth for US Market
  • 30-2-2025 A-frame Visualization system
  • 20-12-2024 Initial design check for Oil-spill recovery cranes on existing vessel
  • 1-12-2024 Development of Electric and Hydraulic Submersible dredge pump for US Market
  • 1-11-2024 Sketch design for Hopper loading and discharge system, splitbarge 6000 cuyd
  • 1-10-2024 HPU and 50 tn Hydraulic winches for 45 tn A-Frame for a US Customer
  • 1-8-2024 Design & conversion of jet system TSHD 1600 incl drag head 650
  • 1-7-2024 Design + write Specification for electric inland ferry (35 tn cap.)
  • 1-7-2024 Design of Booster 900-800 3000 kW
  • 1-6-2024 Award several wear parts for DOP 3025/3530 LD casted in USA
  • 1-6-2024 Award test for removal for Low/Ultra Low sulfur oils for Imaros project
  • 1-5-2024 Supply welding/Cutting equipment for Offshore Wind project in US/Can
  • 1-3-2024 Overhaul DOP 3025 own stock
  • 1-12-2023 Order for 4 containerized crane systems for oil-spill recovery for a US salvage company (delivered January 2025)
  • 27-11-2023 Completion of the basic design for a pump-off system for a 3500 m³ splitbarge
  • 18-11-2023 Delivery of 5 fully autonomous oil-spill recovery systems to a US oil-spill responder
  • 1-11-2023 Delivery of 4 cranes and sweeping arms for German Coastguard
  • 21-10-2023 Delivery of a fully reconditioned and upgraded HPU including remote control system for a US Customer
  • 5-7-2023 Delivery of 8” submersible dredge pump with controls, floating hose
  • 1-6-2023 Supply several different equipment and supplies for a salvage operation in the Mediterranean
  • 1-5-2023 Design completion of a new hydraulic ball-joint system to connect submerged pipelines without bolted flange connections
  • 1-5-2023 Completion of Conversion and trials of converted Splitbarge, operation and controls fully remote operated from a Tug, for a US Customer
  • 1-4-2023 Delivery of several pump parts for Warman and Damen Pumps
  • 1-3-2023 Overhaul of HPU and supply of 4 x 25 tn winches, spud winches and remote controlled valve block
  • 7-2-2023 Overhaul of HPU and DOP 3530 LD, sold to US Customer
  • 1-11-2022 Order for 5 containerized self-contained oil-spill recovery systems for a US Customer
  • 10-10-2022 Jet-water agitated Trencher design for shallow water cable laying
  • 1-8-2022 Design/fabrication of several turning glands diam 500/650/700 for European Customers
  • 7-6-2022 Koseq has FAT tested the first fully atex and Lloyds certified sweeping-arms package (6), cranes and automation for A&R / German Coastguard
  • 1-4-2022 Delivery of atex zone 1 sweeping-arm & crane for KOEM, South Korea
  • 1-3-2022 DMOE has designed/offered a 5000 tn modular drydock to be added to an existing drydock unit to create more flexibility in the repair schedule
  • 1-2-2022
    Preliminary design and project plan for upgrade of Navy owned shiplift in the Middle East
  • 1-11-2021 Delivery of dredge components for conversion of a 4000 yard scow into a trailing suction hopper dredge, incl. gantries, hydraulics, control system
  • 15-10-2021 Order to design and supply components for a 650 mm trailing suction pipe
  • 1-6-2021 Launch of Capital Dredge Parts, platform for surplus/used dredging/marine parts
  • 1-5-2021 Design/component supply for 14” electric driven deep suction dredge (180 ft depth) with Florida fabricator
  • 1-4-2021 Pump repairs for US customer in Florida workshop
  • 1-3-2021 Supply of wear-parts for dredge pumps (US/EU customers), casted in US foundry
  • 4-1-2021 Conversion design to mount Safeway dynamic gangway system on OSV – EDT Protea
  • 31-12-2020 Supply of dredging components: swivels, valves, hoses, winches, pumps, grabs, buoys, etc. worldwide
  • 1-12-2020
    Conversion design start for 3000 m³ split-barge to hopper-like vessel (for ATB pusher)
  • 1-6-2020
    Koseq awarded project: Oil-spill recovery equipment for Korean hopper dredger
  • 1-11-2019 Conversion of 1600 m³ split-hopper dredge: pump-off, dump and rainbow system added
  • 1-9-2019 Delivery of largest slurry mechanical seal (320 mm shaft, 25 bar)
  • 1-10-2019 DMOE moves permanently to new office in Ridderkerk
  • 1-6-2019 Establishment of DMO Services & Equipment Inc. in Canada
  • 1-6-2019 Concept design assistance: 3000 m³ aggregate dredger
  • 1-9-2018 Start concept design for 3000 m³ aggregate dredger
  • 1-12-2018 Completed design of TSP 600 drag-arm for US customer
  • 1-4-2018 Delivery of 4 winches + HPU to Middle East customer
  • 1-2-2018 Support for Canadian dredging company: logistics/maintenance in Kitimat/Prince Rupert
  • 1-10-2015 Project design + tank test at Marin: hopper dredge conversion for 500 m depth (Belgian contractor)
  • 1-8-2015 Purchase of 400 tn floating crane with Tenwolde, sold to Polish customer
  • 1-7-2015 Refit of bow coupling system for US contractor
  • 1-6-2015 Start of operations under Dredging Marine Offshore Service
DatumOmschrijving
8-4-2025New HPU for Hydro hammer S70/S90
14-3-20256 M3 Roundnose grab New-build
15-2-2025Spare Cutter and teeth for US Market
30-2-2025A-frame Visualization system
1-10-2024HPU and 50 tn Hydraulic winches for 45 tn A-Frame for a US Customer
1-11-2024Sketch design for Hopper loading and discharge system, splitbarge 6000 cuyd
1-12-2024Development of Electric and Hydraulic Submersible dredge pump for US Market
20-12-2024Initial design check for Oil-spill recovery cranes on existing vessel
1-8-2024Design & conversion of jet system TSHD 1600 incl drag head 650
1-7-2024Design + write Specification for electric inland ferry (35 tn cap.)
1-7-2024Design of Booster 900-800 3000 kW
1-6-2024Award several wear parts for DOP 3025/3530 LD casted in USA
1-6-2024Award test for removal for Low/Ultra Low sulfur oils for Imaros project
1-5-2024Supply welding/Cutting equipment for Offshore Wind project in US/Can
1-3-2024Overhaul DOP 3025 own stock
1-12-2023Order for 4 containerized crane systems for oil-spill recovery for a US salvage company (delivered January 2025)
27-11-2023Completion of the basic design for a pump-off system for a 3500 m³ splitbarge
18-11-2023Delivery of 5 fully autonomous oil-spill recovery systems to a US oil-spill responder
1-11-2023Delivery of 4 cranes and sweeping arms for German Coastguard
21-10-2023Delivery of a fully reconditioned and upgraded HPU including remote control system for a US Customer
5-7-2023Delivery of 8” submersible dredge pump with controls, floating hose
1-6-2023Supply several different equipment and supplies for a salvage operation in the Mediterranean
1-5-2023Design completion of a new hydraulic ball-joint system to connect submerged pipelines without bolted flange connections
1-5-2023Completion of Conversion and trials of converted Splitbarge, operation and controls fully remote operated from a Tug, for a US Customer
1-4-2023Delivery of several pump parts for Warman and Damen Pumps
1-3-2023Overhaul of HPU and supply of 4 x 25 tn winches, spud winches and remote controlled valve block
7-2-2023Overhaul of HPU and DOP 3530 LD, sold to US Customer
1-11-2022Order for 5 containerized self-contained oil-spill recovery systems for a US Customer
10-10-2022Jet-water agitated Trencher design for shallow water cable laying
1-8-2022Design/fabrication of several turning glands diam 500/650/700 for European Customers
7-6-2022Koseq has FAT tested the first fully atex and Lloyds certified sweeping-arms package (6), cranes and automation for A&R / German Coastguard
1-4-2022Delivery of atex zone 1 sweeping-arm & crane for KOEM, South Korea
DatumOmschrijving
1-3-2022DMOE has designed/offered a 5000 tn modular drydock to be added to an existing drydock unit to create more flexibility in the repair schedule
1-2-2022Preliminary design and project plan for upgrade of Navy owned shiplift in the Middle East
1-11-2021Delivery of dredge components for conversion of a 4000 yard scow into a trailing suction hopper dredge, incl. gantries, hydraulics, control system
15-10-2021Order to design and supply components for a 650 mm trailing suction pipe
1-6-2021Launch of Capital Dredge Parts, platform for surplus/used dredging/marine parts
1-5-2021Design/component supply for 14” electric driven deep suction dredge (180 ft depth) with Florida fabricator
1-4-2021Pump repairs for US customer in Florida workshop
1-3-2021Supply of wear-parts for dredge pumps (US/EU customers), casted in US foundry
4-1-2021Conversion design to mount Safeway dynamic gangway system on OSV – EDT Protea
31-12-2020Supply of dredging components: swivels, valves, hoses, winches, pumps, grabs, buoys, etc. worldwide
1-12-2020Conversion design start for 3000 m³ split-barge to hopper-like vessel (for ATB pusher)
1-6-2020Koseq awarded project: Oil-spill recovery equipment for Korean hopper dredger
1-11-2019Conversion of 1600 m³ split-hopper dredge: pump-off, dump and rainbow system added
1-9-2019Delivery of largest slurry mechanical seal (320 mm shaft, 25 bar)
1-10-2019DMOE moves permanently to new office in Ridderkerk
1-6-2019Establishment of DMO Services & Equipment Inc. in Canada
1-6-2019Concept design assistance: 3000 m³ aggregate dredger
1-9-2018Start concept design for 3000 m³ aggregate dredger
1-12-2018Completed design of TSP 600 drag-arm for US customer
1-4-2018Delivery of 4 winches + HPU to Middle East customer
1-2-2018Support for Canadian dredging company: logistics/maintenance in Kitimat/Prince Rupert
1-10-2015Project design + tank test at Marin: hopper dredge conversion for 500 m depth (Belgian contractor)
1-8-2015Purchase of 400 tn floating crane with Tenwolde, sold to Polish customer
1-7-2015Refit of bow coupling system for US contractor
1-6-2015Start of operations under Dredging Marine Offshore Service