Concept engineering
A practical route from an operational problem to a machine that can be built, verified and used.
Service & fabrication · Buren, NL
Engineering for loads that refuse to behave.
RCR Engineering combines recovery experience, offshore crane know-how and structural capability to solve demanding lifting, access and handling problems.
ConceptOperational idea
VerifyLoads & structure
DeliverFabrication support
Interactive 3D modelRCR dredge crane
Drag to orbitScroll to inspect
◆ Recovery thinking◆ Offshore discipline◆ Buildable engineering
What we do
Close the gap between the calculation and the real site.
RCR stays close to the load, the operator and the fabricator. The result is engineering that survives contact with reality.
Mechanical design
Purpose-built structures, mechanisms and interfaces developed around real loads and working space.
Structural assessment
Clear load paths, defensible calculations and decisions prepared for owners, surveyors and fabricators.
Fabrication support
Engineering that stays close to the workshop through detailing, assembly and testing.
Modification & recovery
Field-informed upgrades for equipment that must perform outside ideal textbook conditions.
Offshore integration
Lifting, access and handling equipment integrated on vessels, pontoons and fixed structures.
Selected field work
Designed on the screen.
Proven on the water.
From vessel-mounted handling equipment to complete operational layouts, RCR follows the engineering through to the place where it must perform. View the complete portfolio →
Selected concepts
Mechanical answers to operational constraints.
Independent dual-winch control
Controlled-load mast head
Two independently driven hooks turn awkward recovery and offshore lifts into controlled movements. Load orientation can be adjusted without surrendering control to swing and tilt.
- Dual independent hooks
- Guided load rotation
- Confined-area control
Engineering dossiers
Three systems.
One operating principle.
Keep the load controlled, keep the installation buildable and give the operator equipment that remains useful when reality stops behaving like the calculation.
RCR solution / 01
Dual-winch crane mast head
Developed from heavy-truck recovery practice, the mast head is intended for damaged, irregular and difficult loads rather than ideal textbook lifts. Two hooks, each powered by its own winch, let the operator adjust height and tension independently to balance the load, shift its centre of gravity and control critical manoeuvres.
The single-fall hoisting arrangement uses sheaves and wire routing dimensioned around the relevant DNV-GL D:d requirements. Correct rope-bending geometry supports predictable performance, longer rope life and fewer unplanned inspection or replacement stops.
Independent hooks also enable controlled upending: a component can move from horizontal transport to vertical installation with far better control of swing and tilt—particularly valuable on moving platforms and confined decks.
- Independent hook height and tension
- Controlled load sharing and upending
- DNV-GL-conscious rope geometry
RCR solution / 02
Vacuum-secured offshore access
Articulated suction arms on the bow form a fast, secure connection with a monopile transition piece. The vacuum-secured interface passively controls vessel motions so personnel, tools and cargo can transfer with the confidence of a stable offshore doorstep.
Remote operation from the bridge reduces exposure for deck personnel and supports repeatable approach, connection and release. By avoiding conventional mooring lines, the concept shortens the transfer cycle and increases workable uptime in wave-affected and tidal conditions.
RCR can develop the system as a custom or retrofit bow module, matched to the vessel, the target structure and the project’s onboard safety and operational protocols.
- Bridge-controlled articulated arms
- No conventional mooring lines
- Custom and retrofit integration
RCR solution / 03
Mobile vacuum-founded crane
A large suction pad in the crane base creates the vertical holding force and friction needed to resist overturning moments and horizontal loads. The result is a reusable crane foundation that can be installed without welding, drilling or a permanent pedestal.
The foldable knuckleboom combines useful outreach and precise positioning with a small stored footprint. Crane and foundation can move together as a project-based module between workboats, barges, pontoons, quays and temporary industrial sites.
Redundant vacuum circuits, continuous monitoring and controlled emergency release form part of the safety philosophy. Capacity and outreach are engineered against suction area, supporting-deck strength and applicable lifting and marine-equipment standards.
- No hot work or drilling
- Reusable plug-and-play module
- Monitored redundant vacuum circuits
Mechanical energy storage
Power when the cycle demands it.
Power Spring modules store energy elastically in coiled spring-steel elements. A motor and reduction drive wind the store; the same mechanical system can return controlled rotating torque when the application needs it.
Development focus: rapid, repeated energy exchange for cyclic machinery and short-duty motion systems. Capacity, power, service life, containment and control remain subject to application-specific engineering, testing and validation.
01Electric inputSolar or grid
→02Controlled windingMotor and reduction drive
→03Elastic storagePower Spring modules
→04Torque on demandMechanical output
Assembly studyR240108-0002 · Rev A
10Spring-steel elements
32 mStrip length per element
Ø460 mmStorage body shown
Coil arrangement studyR240108-0007
Peak support
Stored mechanical energy can assist a drive during acceleration and other short high-demand events.
Energy recovery
Controlled deceleration can redirect part of a rotating system's energy back into the spring store.
Engineered to duty
The store, drive, interfaces, monitoring and containment are developed around the operating cycle.
Concepts under evaluation
Where repeated mechanical work creates an opportunity.
Hybrid laundry
Assist drum acceleration and spin-up, recover energy during controlled deceleration, and explore whether the protected module can also contribute useful counterweight mass.
Internal logistics
Support repetitive routes, frequent starts and short peak loads in carts, AGVs and compact transport systems.
Light mobility
Explore acceleration assistance, short drive cycles and regenerative energy recovery in small vehicles and demonstrators.
Mobile indoor-sports equipment
Two koersbal lanes. One storage system.
RCR designed and fabricated a twin-roll trolley for storing, transporting, deploying and rewinding two koersbal mats. The hand-operated system keeps the mats protected and turns a multipurpose room into two playable lanes without permanent installation.
Independent hand windingMobile steel chassisIntegrated equipment storage
DeployRoll the lane into position
PlayTwo lanes from one mobile unit
From requirement to reality
Designed, fabricated and proven in use.
The project brings together compact storage, safe manual handling and quick room changeover in one purpose-built piece of equipment.
Working method
Begin with the operation. End with equipment that works.
- 01
Understand
Load, carrier, cycle, operator and site constraints.
- 02
Engineer
Mechanisms, interfaces, structure and controls.
- 03
Verify
Load cases, failure modes and structural behaviour.
- 04
Support
Fabrication, assembly, testing and improvement.
About Reinier
One engineer from first sketch to working equipment.
Reinier Crone is a multidisciplinary mechanical and offshore engineer with hands-on experience spanning engineering, fabrication, transport, commissioning and project delivery.
Raised around vacuum-lifting equipment and active in machine assembly from an early age, he built a career around the point where design meets operation. His work has covered lifting equipment, piling rigs and templates, dredgers, offshore vessels, wind-industry tools and custom steel structures.
Reinier leads projects from client requirements and concept development through cost estimation, detailed engineering, supplier coordination, fabrication, inspection, load testing and site acceptance. That continuity keeps technical decisions connected to buildability, safety and the people who must use the finished machine.
20+ yearsHands-on technical experience since 2003
Concept to SATEngineering, fabrication and commissioning
InternationalProjects across Europe and worldwide
Mechanical & structural designOffshore engineeringProject managementFabrication & quality support
Read Reinier’s professional profile → View full curriculum vitae → Download Reinier’s business card (PDF) ↓25+years
Practical cooperation
Engineering informed by recovery work, vacuum technology and offshore lifting.
More than 25 years of close cooperation with SUXXESION in vacuum technology, combined with heavy-truck recovery experience, underpin RCR’s approach: understand the forces, build the interfaces and keep the operator in control.
Start with the difficult part