Pushboat-barge convoys offer great flexibility for inland cargo transport, being able to transport cargo on extremely shallow rivers. However, the meandering nature of rivers requires the convoys to have optimal manoeuvrability performance. The rotatable azimuthing thrusters can serve as an interesting alternative to conventional shaft lines. But how does this affect powering performance and efficiency? Comparing azimuthing thrusters and conventional shaft lines for propulsive efficiency of pushboat-barge convoys is a typical example of using Computational Fluid Dynamics (CFD). The calculations are performed with propulsors underneath the pushboat combined with open-water conditions to gain a better understanding of the propeller-hull interaction effects. The flow around the pushboat-barge convoy is computed with our CFD code ReFRESCO for viscous flows, while the propeller flow is calculated using a Boundary Element Method. For both propulsion systems MARIN will continue research using manoeuvring simulations in typical river conditions.

The channel thrusters can be used for main, as well as auxiliary, propulsion systems. Channel thrusters are driven electrically, hydraulically, or by means of a diesel engine. Installed in the bow or stern, channel thrusters considerably improve the vessel’s manoeuvrability, and alternatively act as a brake force thruster or emergency (main) propulsion unit. Verhaar Omega’s channel thrusters are recommended over Transverse Tunnel Thrusters for auxiliary propulsion, especially in the case of inland waterway vessels with a shallow draught: predominantly river cruise vessels, inland waterway barges or pontoons, double-ended ferries, river dredgers and landing craft. Verhaar Omega’s channel thruster features an integrated horizontal propeller/impeller that pumps water from under the vessel, inward, through a channel at the centre of the unit. Once inside the propeller channel, the water flow is deflected through a rotating drum, which determines the direction of thrust, into outlet channels. As the drum is 360° rotatable, clockwise or counter-clockwise, the thrust force and direction can be controlled accurately within a short response time. The channel thrusters, available in a range from 100kW up to 1500kW, can be fitted with two, three or four outlet channels, depending on the requirements. The Verhaar Omega channel thruster accommodates two separate drive units: one for the propeller, and another for the rotating drum. This unique design eliminates any risk of oil spills or water contamination by grease.

Charterer’s Liability Cover – Essential Protection for Inland Shipping Charterers As a charterer in inland shipping, you face multiple liability risks that could result in significant financial losses. Damage to the vessel, third-party claims, or cargo-related disputes can put your business at risk. GEORG DUNCKER, as your trusted marine insurance broker, helps you secure the right Charterer’s Liability Cover, ensuring you are fully protected against unforeseen liabilities. What Does Charterer’s Liability Cover? A Charterer’s Liability insurance policy provides financial protection for charterers against various legal and contractual liabilities. Depending on the chosen underwriter and policy, coverage may include: ✔️ Liability for damage to the chartered vessel, including Hull & Machinery claims ✔️ Third-party liability for damage to infrastructure, other vessels, or cargo ✔️ Liability for cargo claims, including loss, damage, or contamination ✔️ Pollution liability, covering cleanup costs and legal fines ✔️ Wreck removal costs in case of vessel damage requiring salvage operations ✔️ Legal defense costs for disputes arising from charter agreements Why Choose GEORG DUNCKER? 🔹 Independent brokerage: We work with leading underwriters to find the best liability coverage for your needs. 🔹 Tailored solutions: Policies designed to match the specific risks of inland shipping charterers. 🔹 Comprehensive risk management: Ensures full protection against legal and financial exposure. 🔹 150+ years of experience in marine insurance – a trusted partner for inland shipping professionals. 📍 GEORG DUNCKER – Your Partner in Marine Insurance. 🌍 Learn more: www.georg-duncker.com

As broker, we negotiate with charter parties to transport oil products over the Western European waterways. Negotiating long term contracts is also part of our core business.

Chem-tect™ RB 300 is a 100% solid vinylester protective coating, reinforced with glassflake. This system is typically used as a tank lining system offering excellent resistance to the most aggressive chemicals at high temperature such as acids and solvents. PRIMARY FEATURES AND CHARACTERISTICS Excellent resistance to high temperatures, thermal ageing, severe chemical, corrosive and abrasive environments 100% solid Full pH protection (1 – 14) Provides a tough impermeable barrier suitable for steel and concrete surfaces Fast curing, which allows quicker over-coating intervals and quick back-in-service times Near smooth finish which can be made to any colour Suitable for application in high temperature flue gas plant and equipment Proven resistance to aviation fuels, methanol/water mixtures Low maintenance and ease of repair Tank lining for multi-purpose chemical storage vessels

Chem-tect™ RC 300 is a 100% solid, vinylester protective coating suitable for specialist applications and as a repair material. PRIMARY FEATURES AND CHARACTERISTICS Designed specifically for specialist applications and as a repair material Near smooth finish which can be made to any colour 100% solid No over-coating limitations Offers outstanding adhesion properties to many substrates especially stainless steel, other metals and concrete Superior elasticity and flexibility combined with high resistance to impact and severe mechanical stress Excellent resistance to severe chemical, corrosive and abrasive environments Low maintenance and ease of repair

Chem-tect™ RE 300 is a 100% solid, vinylester protective coating offering exceptional chemical and high temperature resistance. PRIMARY FEATURES AND CHARACTERISTICS Excellent resistance to high temperatures, thermal ageing, severe chemical, corrosive and abrasive environments 100% solid Near smooth finish which can be made to any colour No overcoating limitations Provides a tough impermeable barrier suitable for steel and concrete surfaces Suitable for application in high temperature flue gas plant and equipment Proven resistance to aviation fuels, methanol/water mixtures Low maintenance and ease of repair

Chem-tect™ RF 300 is a 100% solid, vinylester coating which has been specifically designed with exceptional high temperature resistance and to operate in the most severe chemical, corrosive and abrasive environments. PRIMARY FEATURES AND CHARACTERISTICS 100% solid Exceptional protection for combination of high temperature and aggressive chemicals Excellent resistance to thermal ageing, severe chemical, corrosive and abrasive environments No over-coating limitations Provides a tough impermeable barrier suitable for steel and concrete surfaces Designed for application in high temperature chimneys and chemical processing stacks Provides higher resistance to acids and solvents than other grades of vinylesters Low maintenance and ease of repair

Chem-tect™ RD 300 is a 100% solid, vinylester coating offering exceptional chemical and high temperature resistance. PRIMARY FEATURES AND CHARACTERISTICS Offers maximum degree of fire retardancy Excellent resistance to severe chemicals at high temperatures and superior toughness properties 100% solid No overcoating limitations Near smooth finish which can be made to any colour Outstanding resistance to caustic alkalies, hypochlorite bleaches and hot water Preferred choice for high temperature fume/flue gas handling equipment Low maintenance and ease of reparability

Chemco paint is the solution for corrosion protection and marine coatings for inland shipping in the Netherlands. These high-quality marine coatings have been specially developed to protect vessels for a long time against rust, water, and harsh conditions. For shipowners, shipping companies, and maintenance firms, Chemco offers an efficient maintenance method that reduces costs and minimizes downtime. Coating on wet surfaces without grit blasting. Within the shipping and inland navigation sectors, the costs of grit blasting and environmentally harmful activities are steadily increasing. At the same time, environmental regulations are becoming stricter. As a result, the demand for marine coatings that can be applied directly to a wet or damp surface is growing. Chemco paint utilizes wet- and rust-tolerant coating technology. This means that the coating can be applied to damp, wet, or lightly rusted surfaces without intensive surface preparation. This ensures: No or minimal surface preparation; no grit blasting required; faster execution of work; less vessel downtime; lower maintenance costs; reduced environmental impact. Ideal for inland navigation and ship maintenance. Chemco coatings are extremely suitable for applications within the shipping and inland navigation sectors. Thanks to strong adhesion and a long service life, these coatings offer reliable protection against corrosion, even under harsh conditions. This makes Chemco coatings a smart choice for anyone active in inland shipping and maritime shipping in the Netherlands. Buy Chemco paint in the Netherlands | MTC Coating MTC Coating supplies Chemco paint for inland shipping in the Netherlands. We supply the complete range and provide expert advice on the right coating solution for your vessel. View the range: https://www.mtccoating.nl/categorie/chemco-verf/ Contact MTC Coating Tel: +31 628 749 985 Tel: +31 629 193 398 Mail: info@mtccoating.nl

CHEMCO RS 500P is a unique solvent free, wet and rust resistant epoxy primer or primer/finish protective coating. The long-term performance of the system is based on the complete sealing of the surface and the complete stop of rust. The use of sacrificial fillers allows it to be applied to surface standards as low as Sa 1, WJ-4 or St 2. It can be used as a one coat system by brush, roller or airless spray. Together, RS 500P and RA 500M form a multifunctional, pioneering coating system that has been widely used for a wide variety of applications. PRIMARY FEATURES AND FEATURES Without solvents Wet and rust resistant ; Can be applied to soaking wet surfaces Excellent bonding properties Can be used in any environmental condition No operational shutdown; work in the area can continue undisturbed 100% Solid / Zero VOC NSF certified for drinking water applications User-friendly with high flexibility and easy application No restrictions for overpainting No humidity or dew point restrictions Health and safety risk and fire hazard significantly reduced Fast back-in service times AREAS OF APPLICATION RS 500P is fully compatible with all methods of surface preparation (jet blasting; water jetting; mechanical) and has been widely used for almost all marine areas: All internal parts of the tank Piping (internal/external) Deck (internal/external) Accommodation Blocks Underwater areas Superstructure Engine rooms Empty spaces

For over 30 years, Chemco RA300 Series vinyl ester line has provided the most cost-effective and durable tank lining solution. These vinyl ester systems have now replaced polyester due to their ability to handle the most aggressive chemicals at elevated temperatures. The Chem-tect™ 300 Series consists of six unique products. These vinyl ester glass flake systems provide long-term corrosion protection across the full pH range (1 - 14). They are particularly effective in acidic, high-temperature environments where conventional epoxies cannot function. System Benefits: • Complete pH protection (1 - 14) • Excellent high-temperature performance (immersed up to 130°C, non-immersed up to 195°C) • Exceptional resistance to thermal aging, severe corrosive and abrasive environments • Rapid cure allows for rapid overcoating, rapid application, and fast back-in-service times • Touch dry in 2-4 hours • Rapid cure, even at low temperatures • Excellent impact and fatigue resistance

Chemco RA500M – Protective Coating for Maritime Applications at MTC Coating Chemco RA500M is a high-performance, solvent-free epoxy glassflake coating specifically designed for maritime applications. This coating provides long-term protection against corrosion, saltwater, chemicals, and mechanical wear, even under extremely humid conditions. Thanks to its moisture-tolerant properties, Chemco RA500M can be safely applied to damp or wet surfaces, making it ideal for maintenance and repair work on board ships. Key benefits for the maritime sector 100% solvent-free (VOC-free) – safe for use in enclosed ship spaces Moisture tolerant – application possible in high humidity or on wet substrates Excellent corrosion protection against saltwater and harsh marine climates Glassflake-reinforced epoxy for enhanced abrasion resistance and barrier protection NSF certified for potable water applications Typical maritime applications Chemco RA500M is used worldwide in the shipping industry, including for: Ballast tanks Onboard potable water tanks Fuel tanks and chemical tanks Engine rooms Holds and cargo holds Decks (internal and external) Pipelines and pipework Void spaces and technical areas Ideal for onboard maintenance & repair In maritime environments, downtime is costly. Chemco RA500M allows maintenance and repair work to be carried out without complete drying or dismantling. The coating adheres excellently to properly prepared steel surfaces, even when they are still damp. Why choose Chemco RA500M for maritime use? Chemco RA500M offers a combination of reliability, durability, and ease of application. The glassflake technology creates an extremely dense protective layer that slows corrosion and significantly extends the service life of maritime structures. 👉 For more information: Visit: https://www.mtccoating.nl/producten/ra-nieuw/ Call: +31 6 28749985 Call: +31 6 29193398 Email: info@mtccoating.nl

Chemco RL 500PF Coating in the Netherlands | MTC Coating Chemco RL 500PF is a high-quality all-weather primer and topcoat for maritieme applications. This coating has been specially developed for wet, rusty, and hard-to-reach outdoor structures and is supplied and applied by MTC Coating via www.mtccoating.nl. Chemco RL 500PF is particularly suitable for the maritime climate of the Netherlands and Belgium, where high humidity, rain, and fluctuating temperatures are part of daily life. Advantages for local projects: Can be applied in rain and high humidity No dew point restrictions (ideal for coastal and port areas) Resistant up to 150 °C, suitable for steam pipes Fast application = less downtime on site Suitable for both new construction and maintenance Excellent adhesion on steel, stainless steel, galvanized steel, and existing paint systems Why choose Chemco RL 500PF via MTC Coating? MTC Coating is a specialist in maritime coating systems for the Netherlands and the Benelux and offers: On-site technical advice Supply of Chemco RL 500PF Support with maintenance and renovation 👉 More information: https://www.mtccoating.nl/categorie/chemco-verf/ Email: info@mtccoating.nl Call: +31 628749985 Call: +31 629193398

Chemco RS500P Solvent-free Epoxy Primer for Marine Applications. Chemco RS500P is a 100% solid, solvent-free epoxy primer or primer/finish system designed for long-term corrosion protection onboard ships. Its unique formulation with sacrificial fillers allows the product to be applied to wet, damp, and rusty ship surfaces without compromising performance. The system is applicable to surfaces with a cleanliness level up to WJ-4 and St 2–St 3, often eliminating the need for intensive surface preparation onboard. Its long-term performance is based on a pore-free seal and effective rust prevention, even under severe marine conditions. Chemco RS500P is typically applied as an alternative to Sigma 280 / yellow green. Key Features Unique 100% solid, solvent-free epoxy system Excellent wet and rust tolerance, ideal for onboard applications Suitable for various surface preparation methods onboard such as: Grit blasting HP water blasting (500–800 bar) UHP water blasting Mechanical preparation (St 2 – St 3) No humidity or dew point restrictions No overcoating restrictions Excellent adhesion to wet, rusty or poorly prepared ship surfaces Zero VOC (voc) – no fire hazard and no nuisance odour Marine Applications Chemco RS500P is used for the maintenance and protection of, among others: Ballast tanks Cargo tanks Engine rooms Decks Hull structures Enclosed spaces onboard ships Additional benefits for the marine industry Can be applied by brush, roller or airless spray onboard Can be used within coating systems d Conclusion Chemco RS500P is a reliable, durable and cost-effective corrosion protection coating solution for the marine industry. The product offers maximum protection in varying weather conditions and is particularly suitable for maintenance and repair onboard ships. 👉 Meer informatie? VISIT; www.mtccoating.nl Mail: info@mtccoating.nl Call: 0031 628749985 Call: 0031 629193398