Yearbook 2025

SAFETY, INNOVATION AND SUSTAINABILITY CENTRAL TO SPECIALIST IN MARITIME UNDERWATER SOLUTIONS

In 2025, DISA International once again demonstrated how it tackles complex maritime and offshore challenges with its specialist divisions and innovative solutions. From firefighting and remediation after a major ship fire to decommissioning projects, drone innovation and subsea inspections: safety, sustainability and efficiency are always central.

BLUETACK

Following a serious fire on board a large

roll-on/roll-off carrier, in which hundreds of vehicles were damaged, BlueTack was called in to manage the situation. ‘Our team advised the parties involved on a plan to reduce the environmental and safety risks to the ALARP (As Low As Reasonably Practicable) level,’ says Dirk de Jong, co-founder of BlueTack.

The company supported the emergency services and authorities in drawing up a structured plan of action. ‘This made it possible to safely enter the affected areas and control the risks of reignition, collapse and exposure to hazardous substances. We then carried out the damage assessment and coordinated the safe removal of heavily damaged vehicles,’ says Jan Polderman, co-founder of BlueTack.

All residual flows, such as firefighting and flushing water, were carefully collected and disposed of via approved processing channels. To this end, BlueTack set up a temporary liquid-tight storage area on the quay, which served as a controlled temporary storage and processing location. Thanks to this integrated approach, repair work on the ship could commence considerably faster, with minimal risks to people and the environment.

DECOMMISSIONING AND REEF PROJECT IN MALAYSIA

DISA International recently made an important contribution to a large-scale offshore project. In Malaysia, the Singaporean department was called in by MARINE MASTERS Malaysia Sdn. Bhd. for the decommissioning of the South Angsi Alpha (SAA) offshore facilities. "During the operation in the summer of 2025, our team carried out a variety of underwater activities, supported by innovative techniques," says Robin van Halder of

DISA International. "In addition, we coordinated maritime and heavy lift activities without the need for heavy lifting vessels. All work was carried out strictly in accordance with international and local HSSE guidelines, which contributed to the safe and sustainable execution of this large-scale project."

ROV ACTIVITIES

In addition to decommissioning projects, DISA International also plays an important role in the development of sustainable energy. "On behalf of Føn Energy Services - a joint venture between DISA, IKM and AKASTOR - we have carried out specialised ROV work for the maintenance of various offshore wind farms," says Marc Veldhuizen of DISA International. DISA's ROV teams DISA inspected and reported on the condition of the subsea infrastructure, collecting crucial data for the safe and efficient operation of the installations. This contribution helps to ensure the reliability and continuity of wind energy projects and underlines DISA's commitment to a sustainable future.

FLIGHT CONTROL ROOM

SKEYE BV is a subsidiary of DISA and specialises in advanced drone operations. Together with DISA, regular inspections are carried out, both onshore within the civil construction market and offshore in energy projects. Increasingly, these operations are carried out from the modern Flight Control Room, aansturen terwijl de apparatuur zich op de locatie van de klant bevindt. Dit biedt aanzienlijke voordelen op het gebied van veiligheid, kosten en tijd. Een bijzonder hoogtepunt in 2025 was de gelijktijdige uitvoering van inspecties boven én onder water in verschillende offshore windparken: SKEYE met drones in de lucht en DISA met ROV’s onder water. Dit illustreert perfect de kracht van samenwerking en geïntegreerde expertise binnen de DISA-groep.

CARGODRONE

SKEYE also continues to invest in the future of drone innovation. The team recently completed an intensive training programme in the Dolomites (Italy) on operating the Flying Basket FB3, a state-of-the-art heavy-lift cargo drone. This aircraft can carry loads of up to 100 kilograms, making it a sustainable alternative to traditional logistics methods. The capabilities of the FB3 enable efficient and safe deliveries, particularly in hard-to-reach areas where conventional means of transport fall short.

CIVIL UNDERWATER PROJECTS

DISA itself is currently working in Germany on the last of four construction pits for a new metro line. ‘We are assisting the customer with excavating the pit in locations that cannot be reached with a mobile excavator,’ says Christopher Tennes of DISA Deutschland GmbH. "A diving team and diesel jet pump are used to loosen the soil so that the sludge can be sucked up. Once that has been done, we apply a 50-centimetre layer of gravel underwater. We then clean approximately 1,400 m² of deep wall, cut out 285 metres of aerated concrete blocks, install 450 injection hoses and assist with the underwater concrete pouring. A total of 2,200 m³ of concrete is poured in a layer thickness of 190 centimetres at a depth of 13 metres."

Whether it concerns safe remediation after a ship fire, the dismantling of complex offshore facilities, advanced drone inspections, civil underwater projects or supporting sustainable energy projects: the specialised divisions of DISA International demonstrate time and again their added value in safeguarding people, the environment and infrastructure. ‘With a combination of innovative methods, strict safety standards and sustainable solutions, we are building a future in which safety and sustainability go hand in hand,’ concludes De Graaff.