Based in Aberdeen, Scotland, J1W provides service, rentals, and sales of ROV (remotely operated vehicle) tooling to clients around the world. J1W uses DYNASET HPW520-SUB Hydraulic High Pressure Water Pump and integrates it into a compact jetting system for subsea projects. This helps operators cut downtime, improve reliability, and speed up turnaround times in challenging offshore conditions.
A Nimble Team with Global Reach
J1W is a small, agile team focused on the service, rental, and sales of ROV tooling for the subsea industry. From its base in Aberdeen, the company supports a worldwide network of clients where innovation and rapid response are essential in demanding marine environments.
Reliability Underwater: Why the SUB Version
Early on, J1W saw that many operators chose DYNASET’s marine grade high-pressure water pumps for ROV projects—popular and proven in topside and general marine environments. Fully subsea duty, however, places different demands on equipment and can call for more frequent servicing when units are used outside their intended environment. J1W stresses that marine grade units remain reliable in their intended environments; for permanently submerged tasks they recommend DYNASET’s SUB version to reduce downtime and improve performance.
“For subsea operations the SUB pump has proved to be far superior to the marine and standard grade options,” the team notes. “We have strongly advised the use of the SUB versions to decrease downtime and increase pump performance.”
As a result, J1W moved its rental fleet fully to DYNASET SUB pumps – specialized models engineered for permanent submersion in seawater – and many customers have followed suit in their own equipment.
As J1W explains, this shift has “reduced service costs and improved turnaround time for the next rental scope.”
Integrating Dynaset Into a J1W System
J1W acts as an intermediary and system integrator – procuring DYNASET HPW520-SUB pumps and packaging them into ready to deploy subsea jetting systems for client projects. The package keeps the HPW520-SUB as the core component and adds J1W’s control block for flow and pressure control plus pilot on/off, all in a compact, fieldready form factor. The system is typically paired with a lance and optimized nozzle set for efficient subsea cleaning. With the J1W block in place, the HPW520-SUB package can also be configured for fluid injection scopes.
Where It Works and What It Solves
The HPW520-SUB Jetting System is used primarily on work-class ROVs, supporting inspection, decommissioning, cleaning, and IRM (inspection, repair, and maintenance). In practice, the system’s first job is to prepare subsea areas – removing marine growth, mud, and debris so inspection or intervention can proceed quickly and safely. It also supports dredging assistance when needed.
Measurable Benefits in the Field
After moving its rental fleet exclusively to DYNASET SUB pumps, J1W has seen tangible results:
- Reduced service costs: Lower servicing needs in fully subsea use reduce service costs.
- Faster turnarounds: Lower servicing between rentals has improved turnaround time to the next scope.
- Higher reliability: Customers have reported robust performance, and J1W has observed longer rental durations aligned with that reliability.
Maintenance Confidence – Before the Vessel Sails
Reliability offshore starts onshore. Every J1W unit is tested prior to rental and again before sale deliveries to match the customer’s specification. The company’s in-house test unit, combined with personnel experienced on multiple DYNASET pump models, underpins service confidence for operators heading into harsh environments.
What Is Next for ROV Jetting?
Looking ahead, J1W expects to see the HPW520-SUB used even more widely in variable buoyancy systems, cavitation cleaning, and bespoke ROV skid integrations – all areas where robust, compact, and controllable high-pressure water is a key enabler.
From Dynaset: SUB Pumps for Every Subsea Mission
Beyond the HPW520-SUB, DYNASET supplies multiple HPW Hydraulic High Pressure Water Pump models that can be specified for permanent submersion in seawater. Match flow and pressure to your ROV class and task – cleaning, IRM, decommissioning, dredging assist or injection – and pair with the right valves, lances, and nozzles.
How Would You Use Dynaset SUB Pumps in Your Subsea Work?
Tell us about your subsea project, equipment, and requirements – we’ll recommend the right SUB pump setup.
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