Vedam conducted a feasibility study for converting an HFO-fueled capsized dry cargo vessel to LNG/gas propulsion. The project involved major modifications, including engine conversion, installation of a gas fuel bunker tank and fuel gas system, and removal of the HFO system. Additional upgrades encompassed changes to mooring equipment, the vessel hull, and cargo hold, as well as the installation of a deck genset for BoG handling.
Waste Heat Recovery Installation on 9600 TEU Container Vessel
We engineered the installation of a single Exhaust Gas Economizer (EGB) on a 9600 TEU container vessel to recover heat from two out of five diesel generators. This project focused on optimizing heat recovery, reducing emissions, and achieving cost savings. We tackled design complexity by integrating the EGB into the vessel’s existing systems with minimal modifications and addressed space limitations by finding an optimal location. Our support extended to planning and executing the EGB installation, ensuring efficiency and effectiveness in enhancing the vessel’s operational performance.
Hull Form Optimization of a Bulk Carrier
We optimized the hull forms for four bulk carriers, enhancing efficiency according to client specifications. Utilizing 885 kW engines, we achieved a design speed of 10 knots with a 10% sea margin. Our process involved performing CFD analysis to refine the hull form and reduce resistance, ensuring improved performance and fuel efficiency for the vessels.
CFD Analysis for Propeller Nozzle Enhancement of an OSV
Vedam conducted a comprehensive Self-Propulsion CFD analysis for a client, focusing on fitting a nozzle over the CPP (P&S) of their OSV to enhance propulsion characteristics. Our scope included analyzing the vessel’s performance with and without the propeller nozzle to achieve key improvements: increased bollard pull thrust, uniform water flow to the propeller, reduced cavitation, and decreased loading on the propellers.
Deadweight Increment of a Bulk Carrier
We conducted a detailed engineering study for a bulk carrier to assess the deadweight increment achieved by extending the vessel’s length by 14.4 meters and adding an extra cargo hold. This modification increased the vessel’s deadweight by approximately 8,850 tons. Our analysis focused on enhancing the Energy Efficiency Existing Ship Index (EEXI) and Carbon Intensity Indicator (CII) while updating strength analysis and documentation to ensure watertight integrity and structural stability.
New Build: Gas-propelled Tanker
Vedam built a gas-propelled tanker designed for inland river operations. Measuring 70 meters in length with a draft of 1.5 meters and a speed of 5 knots, this vessel is built to the highest standards of efficiency and environmental responsibility. The project includes 28 ships, featuring a zero ballast design that enhances stability and minimizes environmental impact, as well as a limited draft design optimized for shallow water navigation. Equipped with economical CNG-fueled engines, the tanker significantly reduces operational costs and emissions. Its simple hull form facilitates construction and maintenance, while the STS cargo transfer capability ensures efficient cargo handling.
New Build: Electric Ferry (Design)
We designed an eco-friendly passenger vessel with sustainability at its core. This innovative vessel features an overall length of 18.0 meters, a beam of 6.0 meters, and a depth of 1.6 meters, with a design draft of 0.8 meters. It can accommodate up to 50 passengers, including 30 seated and 20 standing while achieving a cruising speed of 9 knots. Propelled by two electric outboard thrusters, the vessel is equipped with a 112.5 kWh, 750V LTO battery system, ensuring zero-emission operations. Designed for an economical speed of 8 knots, it strikes a perfect balance between performance and environmental responsibility.
New Build: 60T BP Green Hybrid Tug
Vedam has designed a 60T BP Tug equipped with a hybrid propulsion system. By seamlessly combining diesel engines and a robust 2000 kWh battery system, we’ve achieved a remarkable 53% reduction in CO2 emissions per operational cycle. Our advanced Power Management System ensures optimal performance by intelligently switching between battery and hybrid modes. This innovative solution not only minimizes our environmental impact but also enhances operational efficiency and cost-effectiveness.
Deck Container Barge to LNG Shuttle Conversion
We successfully converted a deck container barge into a specialized LNG carrier for inland US waterways. This innovative project involved integrating two capsule-type LNG tanks onto the barge’s deck, with a design approved by ABS and USCG. Our comprehensive scope included detailed engineering for water spray and curtain systems, structural modifications, enclosed spaces for new equipment, and a nitrogen purging system.
OSV to FRU Conversion
Vedam engineered a comprehensive conversion of an Offshore Support Vessel (OSV) into a gas-handling platform. Our scope included detailed design for the integration of critical gas handling equipment onto the vessel’s deck. This involved incorporating high-capacity vaporizers, storage tanks, and associated pumps, piping, and safety systems. We also developed essential manifolds, drip trays, and other deck fixtures for efficient gas loading and unloading operations. To ensure safe and reliable operations, we designed auxiliary systems such as glycol heating water circuits, nitrogen purging, and venting.
Engine Room Renewal of a Luxury Yacht
We successfully transformed a luxury yacht by completely renewing its engine room. This complex project involved a comprehensive overhaul, including model testing and upgrading the propulsion system to a higher-powered diesel-electronic configuration. Under Lloyd’s Register class, we developed detailed design plans for the engine room layout, piping, outfitting, HVAC, and electrical systems. The yacht’s speed was significantly enhanced to 12 knots with upgraded 2x420kW and 2x230kW generators. Throughout the project, we meticulously monitored load shift weight and assessed stability to ensure the yacht’s safety and performance.
LNG Engine Refitting of a Container Vessel
Vedam completed a complex conversion of a container vessel to operate on LNG. This project involved replacing the existing HFO engine with a dual-fuel LNG engine, while also converting a container hold into LNG storage tanks. To optimize propulsion, the vessel’s shaft was transformed from a fixed pitch to a controllable pitch. We designed the integration of new LNG-related equipment, including dual-fuel generators for boil-off gas management. This comprehensive re-engineering project positions the vessel for environmentally friendly and efficient operations in demanding environments like the Alaskan waters.
SCR Solution for Container Vessel
We enhanced the environmental performance of a 3000 TEU vessel by integrating a state-of-the-art Selective Catalytic Reduction (SCR) system. As part of a larger project to convert the vessel from diesel-electric to LNG propulsion, we engineered the seamless integration of the SCR system with the new dual-fuel generators. Our comprehensive scope included designing a dedicated maintenance platform, optimizing exhaust piping, and meticulously adhering to stringent vendor requirements. By carefully considering factors such as urea storage and exhaust back pressure, we ensured the SCR system’s optimal performance and compliance with stringent emissions regulations.
Deadweight Capacity Enhancement of CSR Bulk Carrier
Vedam conducted a feasibility study to increase the deadweight capacity of a CSR Bulk Carrier for a prominent client. Focusing on efficient design solutions and cost minimization, we targeted critical failure cases and key parameters to assess the potential for deadweight increase. The positive outcome of the study allowed us to move forward with securing class approval for the necessary drawings and calculations. Our team performed comprehensive structural strength and stability checks, including Intact and Damaged Stability, ensuring compliance with class and statutory requirements.
Marine Growth Prevention System (MGPS) Replacement for Container Vessel
We assisted a client in replacing an outdated Chemical-based Marine Growth Prevention System (MGPS) on a container vessel with a more efficient Electrolytic MGPS. This upgrade addressed the issue of biofouling in the vessel’s seawater system, which is critical for operations like ballasting, cooling, and freshwater generation. The new Electrolytic MGPS system, installed in the sea main strainer, offers easier installation and maintenance than the chemical dosing system.
Enhancing Ship Efficiency & EEXI ComplianceÂ
We completed a project aimed at enhancing ship efficiency and ensuring EEXI compliance by reducing engine power limits for a client. We conducted a comprehensive study on various Energy Saving Devices (ESDs), including Mewis Duct, Energo Flow (fins), and Air Lubrication System. Our analysis determined that Energo Flow fins provided the most significant improvement, with a 3.98% boost in EEXI and a 2.2% increase in EPL. The successful implementation of this solution not only met regulatory requirements but also prevented potential profit loss for our client.
Exhaust Gas Economizer (EGE) Installation on a Container Vessel
Vedam successfully integrated an Exhaust Gas Economizer (EGE) on the Auxiliary Engine of a container vessel, marking a significant step toward enhancing operational efficiency and reducing environmental impact. The EGE technology recycles waste heat from exhaust gasses, converting it into usable energy, optimizing fuel consumption, and significantly lowering emissions.