DROMEC Winches company film 2024

Welcome to DROMEC, my name is Cees Drost. Today, we are at DROMEC where we develop and build winches. We are a family business, the second generation. In 1996, my father started with drive technology and later added winch construction, which is what we are fully engaged in today.

DROMEC innovative software and engineering

DROMEC is an innovator in the field of winches and winch systems. If you look around here, you’ll see various models, and the secret behind this is our software. With this software, we can combine an infinite number of models. Any customer request, no matter how complex, can be entered into this software, resulting in a design that suits the customer perfectly, exactly what they are looking for. We design it, we build it, and if the customer wishes, we also handle commissioning on site, wherever that may be.

Our strength: our dedicated people!

The strength of DROMEC also lies in our people. The freedom they are given to contribute their ideas stimulates innovation. Each time, you are challenged with a different design in a different market, and you are involved in the process. You don’t just do the drafting work; you also have contact with the customer and go on-site to see the project.

Build winches smartly and build smart winches

DROMEC’s vision is not only to build winches smartly but also to build smart winches. We achieve this by combining our proprietary software with our control systems, allowing us to design intelligent, efficient systems. AI plays an increasingly significant role in this, although the creativity of our people remains the driving force behind innovation.


DROMEC Winches over 5 Years of Stable Power Behind Dubai’s Zipline

The longest urban zipline in the world has been built in Dubai Marina. The XLine Dubai Marina reaches heights of up to 170 meters and spans a length of 1 kilometer. Enthusiasts can descend at a speed of 80 km/h, enjoying breathtaking views. DROMEC developed the winch system for setting up this zipline, combining safety and control with an ultra-lightweight design.

Cees Drost, CEO of DROMEC:
“The challenge in installing the zipline lay in the complexity of the dense urban environment, combined with the task of pulling the cable from a high tower to a lower harbor area. Using aids like helicopters or drones was not permitted because the zipline route crosses over a highway, railway, bridge, harbor, and high-rise buildings.”

Modular Winch System

For rigging this tourist attraction atop the Amwaj Towers, DROMEC Winches developed a modular winch system. This system includes an ultra-light spool system combined with a pull-in system with a pulling force of 5 tons. These components were transported in parts via a narrow staircase to the rooftop and installed on-site. Under very precise Constant Tension, the operation commenced, and the heavy steel cable reels were unrolled and pulled upwards. The winch system will be reactivated for zipline maintenance and cable replacement.


The zipline is equipped with strong steel cables capable of withstanding high loads and tensions. The starting platform and the end location are robustly constructed using high-quality materials to ensure safety and stability. The engineering required detailed calculations for cable tension, forces on anchor points, and aerodynamic effects on the riders.

Braking Mechanism

An advanced braking system ensures a smooth and safe stop. The braking mechanism is designed to automatically engage as the rider approaches the end location. With a harness connected to a trolley, the rider glides over the cable. This trolley contains wheels and a redundant safety system to ensure the rider remains safe during the ride.


The combination of advanced technology and safety features makes the XLine Dubai Marina one of the most innovative ziplines in the world. The zipline has two parallel lines starting from the Amwaj Towers, allowing two riders to glide simultaneously. This not only increases capacity but also enhances the experience with a unique view of the Dubai skyline and the marina!

DROMEC Winches develops Active Heave Compensation on winch systems

“Active Heave Compensation is a technology where the ship’s wave motion is compensated for. In short, that’s Active Heave Compensation. The winches on the ship work in precisely the opposite way, so that the load at the bottom of the hook remains stationary,”
says Cees Drost, CEO of DROMEC.

Offshore Technology

Reducing the effect of wave-induced heave motion on drilling and production operations is particularly important in the offshore and oil and gas industry. This technology is widely used here. Additionally, winch systems combined with Active Heave Compensation are being developed for offshore operations. At DROMEC Winches, engineers are working on winch systems that can compensate for wave motion, ensuring safety and reliability in these complex situations.

Quadruple System

For properly functioning Active Heave Compensation, you need a quadruple system. An MRU, Motion Reference Unit, which is a compass, altimeter, and inclinometer combined into one device. This system tracks the ship’s motion relative to the fixed world, the earth. Additionally, DROMEC Winches develops software capable of converting MRU data into actions in winch control. The third relevant component is the control system that can respond to the software’s input value in milliseconds. And finally, we use a winch that can respond not only to the speed of motion but especially to the acceleration of a wave. In short, it’s a demonstration of stable engineering!


DROMEC Winches collaborates with the customer to determine which MRU they would like to use. Often, there is already an MRU on board, and DROMEC can provide the necessary components to create a fully functioning Active Heave Compensation system with one or a combination of multiple winches.

Cees Drost:
“With this application, the customer has many more possibilities. This makes the system special. For example, if you want to hang an object still above the seabed while the ship is in waves. With Active Heave Compensation, you can work as if you are on still water. The object will thus remain stationary in the water. This system is also frequently used in transfer systems at sea. Operators can safely transfer from a swaying ship to a stationary platform. With AHC, the customer works safer, more precisely, and more efficiently because operators can continue working even in rough seas.

P.S. Happy King’s Day, and secretly I am proud of our stable Oranges!!”

DROMEC Winches develops three-stage pull-in system

Boskalis Subsea Cables is responsible for the pull-in operation of high voltage cables at a offshore substation. DROMEC Winches has developed a pull-in system where the cables are pulled in from the ship in the substation under Constant Tension. Unique to this pull-in system is the extreme ratio of 20 tons of pulling force combined with a system weight of 1450 kg.

Pull-in System

DROMEC Winches previously built a series of pull-in systems for Boskalis with pulling forces ranging from 8 to 10 tons. The good collaboration during these projects provided the boost for this new development. The operation for this pull-in system is exactly the same as for the previously delivered systems. The system may look complex, but it is incredibly user-friendly; at a glance, the operator can see what they are doing on the touch screen. DROMEC uses the same software platform for all pull-in systems. The dimensions are also compact so that the system can be transported through a door.


This pull-in system has an electric drive with Constant Tension. In case of excessive pulling force, the system automatically releases. It has two capstans and a puller, each with its own brake motor to ensure triple safety. This ensures compliance with LOLER and PUWER guidelines. The three subsystems ensure that the force is built up step by step. The lower main capstan generates a pulling force of 20 tons, the intermediate head generates 2.5 tons, and the puller has a pulling force of 150 kg. This is how the system operates autonomously.

Cees Drost, CEO of DROMEC:
‘Boskalis is a great company to work for. With this innovative expansion, the company can safely pull in heavy high voltage cables.’

Knots and bridles

A knot or bridle? In this pull-in system, DROMEC Winches has developed a puller with a special spring applied so that even those obstacles pose no problem when pulling in the high voltage cables.