Direct firefighting in shipping containers

Innovative firefighting equipment that can perform fully automatic & direct firefighting in containers both at heights, at deck level & below deck

An industry pain


Today it is not possible to perform direct firefighting in a burning container at heights. The crew does not stand a real chance of fighting the container fire efficiently.


Container fires both at deck level and below deck level are inefficiently fought today and puts the crew in a very dangerous situation.


If a container fire is not addressed fast and efficiently it will spread quickly and it can lead to significant human – and financial costs.

The Danish Maritime Accident Investigation Board, case number: 2013010519

Value proposition


The HydroPen System makes it possible to directly extinguish a container fire at heights, at deck & below deck on board a cargo vessel. No other solution can do that.


The HydroPen will perform a fully automatically water-based penetration of the container door and afterwards perform direct firefighting inside the container.

Value propositions of the HydroPen System


With a minimum of manual work the HydroPen will either be hoisted to the burning container at heights or deployed on the critical container within reach of a man.


The HydroPen System will improve the safety for the crew, the cargo & the ship, and it will help the ship owner avoid significant fire related costs.

The HydroPen System – Fighting container fires smarter and more efficiently than ever seen before.

The HydroPen is a new innovative and ground-breaking technology that can fight container fires on board container ships. The HydroPen is a water-based drilling machine. It uses only water pressure from the fire main to drill through a standard steel container door.

Container firefighting at heights

Container firefighting at deck level

The HydroPen & Lift

To perform direct firefighting at height the HydroPen must be used together with the telescopic lift.

The combination of the HydroPen and the lift enables the ground-breaking feature of reaching containers at fire at heights and to fully automatically extinguish the fire inside the burning container with direct firefighting as soon as it has been mounted on the container door.

The HydroPen
Direct container firefighting at heights

How does it work?





Mounting the Hydropen with the telescopic lift
  • Locate the area with the burning container.
  • Hoist the telescopic lift to the specific burning container by attaching the lift to the locking bars.
  • Winch the HydroPen to the end of the telescopic lift and turn on the water supply from the fire main.



Drilling through the burning container with the HydroPen
  • The water pressure flows into a hydrodynamic turbine, which rotates and drives the automatic drilling process.
  • A hole saw and a nozzle at the end of the HydroPen will penetrate the container.


Auto change & extinguishing

The HydroPen automatically changes mode and spray water inside the burning container and extinguish the fire
  • Once the hole saw and nozzle enter the container, the HydroPen automatically changes mode, shutting off the water supply to the turbine and instead guides the water through the nozzle to spray inside the burning container and creates immediate firefighting.

The concept in real-life

What is the HydroPen System?

The concept in real-life

What is the HydroPen System?

The HydroPen & HydroLock

  • Performing direct container firefighting at deck level.
  • The HydroLock is an add-on device which is easily clicked on to the HydroPen.
  • When the HydroLock is clicked on the crew member can walk towards the burning container and deploy the HydroPen on the container by mounting it on the locking bar.
  • The crew member can walk away from the dangerous situation and turn on the water from the fire main system, which will initiate the automatic firefighting at safe distance.

Watch the video

The HydroPen & Foam

  • Use the HydroPen normally to drill through the container by using water pressure.
  • Keep the HydroPen on the container after the penetration is done and then disconnect the fire hose from the fire main and empty the water from the hose.

  • Connect the foam ejector to the fire hose in order to supply the HydroPen with foam, which will create a spray of foam inside the container – both in containers at heights and on deck level.

  • The efficiency and safety of fighting Class A & B fires will increase.

Watch the video

Watch the video

The HydroPen & CO2

  • Use the HydroPen normally to drill through the container by using water pressure.
  • Keep the HydroPen on the container after the penetration and then disconnect the standard fire hose from the fire main and empty the water from the hose.
  • Connect the HydroCO2 to both the fire hose and the CO2 extinguisher in order to start filling the critical container with CO2 at a safe distance – both in containers at heights and on deck level.
  • The HydroCO2 will optimize the firefighting and Class C fires can be fought


Fully automated penetration and fire extinguishing

Automatically changes function from penetration mode to fire extinguishing mode and kills the fire inside the burning container.

The HydroPen can operate both at heights & on reachable containers

The telescopic lift makes it possible to reach a burning container at heights. The HydroLock enables firefighting in containers at deck level and below deck.

100% fire main powered - no electricity required &

Water pressure from the already existing fire main system on board vessels create a fast penetration and flow rate.

Simple to operate and mount on the critical container

The mounting process relies only on manpower. It requires little training and low maintenance. The HydroPen System weighs only 9 kilograms.

Protects the crew, the cargo & the ship

The crew can retreat to safety immediately after mounting the Hydropen System, which enables them to keep at a safe distance. It can be used on any ISO shipping container.

Avoidance of significant cost impact - up to $2 million

Minimizes spread of fire to other containers and the need for deviation from the route. Water throw length reaches a full 40 ft container.


The HydroPen is Type Approved as a “water mist lance” for marine use on board seagoing vessels according to SOLAS Resolution MSC 365(93) 10.7. by DIFT – Danish Institute of Fire Technology – which is a recognized test laboratory by IMO and on behalf of the Danish Maritime Authority.


The technology and combination of work processes in the HydroPen System is patent pending according to the international Patent Cooperation Treaty (PCT) administrated by the World Intellectual Property Organization (WIPO).

Are you interested?

Please enter your e-mail and phone number below, and we’ll contact you directly within 24 hours with more information.

Contact VIKING Life-Saving Equipment

VIKING is our global sales & distribution partner

Lasse Boesen
Product Manager Trade

Jørgen Holm
Product Mgmt & New Building Director

Contact us

Technical inquiries
Jesper Rosenfeldt Hansen
+45 6169 8177

Commercial inquiries
Martin Winkel
+45 4042 4168

Other contacts
General inquiries and information

Write us

Pier47, Langelinie Allé 47, 2100 Copenhagen

Rosenby Engineering - Administration

Langelinie Allé 47 2100 Copenhagen Ø

Development & workshop
Bautavej 1A 8210 Aarhus V

Rosenby Engineering - Development & Workshop

Bautavej 1A 8210 Aarhus V Denmark


Board of directors

Jesper Rosenfelt Hansen

Jesper Rosenfelt Hansen


Martin Winkel

Martin Winkel


Steen Ulf Jensen

Steen Ulf Jensen


Steffen Conradsen

Steffen Conradsen

Member of the board

About the company & idea

Rosenby Engineering develops high-quality solutions for complex problems in the marine industry. The company has obtained valuable knowledge and insight from the founder’s maritime careers on a variety of maritime positions and ship types. This has driven Rosenby Engineering to develop and engineer The HydroPen System, which is safe and easy to use for all crew members in emergency situations.

The purpose of Rosenby Engineering is to improve container fire safety and conquer the global container fire equipment market. The company aims to decrease risk to personnel, ship, cargo and the environment by solving complex problems with simple technologies.

Rosenby Engineering was founded in 2016. The daily operations are carried out by Jesper Rosenfeldt Hansen and Martin Winkel.

In 2017 Rosenby Engineering won the elite accelerator program for hardware start-ups “Danish Tech Challenge”, which is hosted by DTU Science Park and Industriens Fond. The company was tested on a variety of different topics to ensure that the company had what it takes to become successful in the future. Finally, each of the participating companies was evaluated by a professional jury and Rosenby Engineering was rewarded with the first place and DKK 500.000, which was handed over by His Royal Highness Crown Prince Frederik of Denmark.

Firefighting with The HydroPen

The mission

We want to rethink, optimize and revolutionize the global fire safety within the shipping container industry.

The vision

Our technology will ensure that you will be able to access all shipping containers on land, in open water and stacked at heights. Our technology will be the preferred and most widely used method to fight fires in shipping containers worldwide.


Danish Maritime logo
Danish Maritime logo
DBI Fire and Security
DBI Fire and Security
The Danish Maritime Fund
DTU Science Park
European Structural and Investment Funds
Martime Center for Operations
Scale Up Denmark
Technological Institute
Development Center Northern Jutland
Kofod & Christensen Machine Factory
Innovation Fund Denmark
Danish Export Association
Danish Export Association