During the design phase, numerical methods are used to determine resistance and optimize the hull lines. Based on this data, a performance prognosis is created, taking into account power reserves. Once the basic design parameters, such as length, width, draft, propulsion unit, etc., are fixed, the construction costs are largely determined. A correct performance prognosis during the design phase is therefore essential for the profitable execution of the project. Continue reading “BREWEL – Simulation of Ships with Breaking Waves
2023 – 2026″
Author: pa
BREWEL – Simulation of Ships with Breaking Waves
ActiveRudder – Innovative Propulsion and Manoeuvering System 2023 – 2025
The European Union’s “Green Deal” aims for the EU to achieve climate neutrality as an economic region by 2050. To this end, greenhouse gas emissions from transportation are to be reduced by 90%. Additionally, there are port authorities that offer fee discounts to ships entering with lower exhaust and/or noise emissions. Continue reading “ActiveRudder – Innovative Propulsion and Manoeuvering System 2023 – 2025”
SKEG – Impact of Skeg Alternatives on Resistance and Yaw Stability
2022 – 2025
Preliminary investigations have shown that skegs have a significant impact on ship resistance. Initial studies on the resistance of a twin-screw vessel confirm this trend. However, the skeg plays a crucial role in course stability and the effort required for construction and docking of ships. Therefore, alternative systems with lower resistance need to be developed, taking these factors into account. Continue reading “SKEG – Impact of Skeg Alternatives on Resistance and Yaw Stability
2022 – 2025″
SMM 2024: Preparations are in Full Swing!
Dear business partners and visitors,
SMM is just around the corner again this year! Our preparations are in full swing and we can’t wait to present our latest innovations and technologies as well as our know-how in the maritime industry.
Visit us at our stand B4.EG.102 to find out more about our current projects, products and services. Our team is looking forward to your visit.
We are also happy to welcome students to our stand to discuss opportunities for internships, final theses or career entry.
We look forward to your visit!
Utility Model Protection for Z-Profile Propeller
With the completion of the “LeiQaS” R&D project (funding code 03SX530C), SVA is in a position to design transverse thruster propellers that are more efficient with lower noise emissions than conventional transverse thruster propellers with fully symmetrical profiles. For this reason, SVA applied for industrial property rights in the form of a utility model protection (No. 20 2024 000 150) for “Propellers with Z-profiles to reduce noise and increase efficiency” at the German Patent and Trade Mark Office on the 25th January 2024. The profile shape was developed by SVA as part of the project with the aim of achieving a spatial stabilisation of the flow separation and the start of cavitation, which leads to a reduction in noise and an increase in efficiency. In view of the increasing desire of ship owners for comfort, the future regulations for noise reduction and the low additional costs when using an alternative propeller design, it can be assumed that propellers with Z-profiles will find a high level of acceptance in the shipbuilding industry.
Timed as Planned
The on-board measurements for the “AutoPlan” (funded by BMWi; reference number 03SX523) research project on a semi-planing boat were successfully completed in the Sea of Marmara near Istanbul. In addition to the on-board measurements, the boat, built by the UZMAR shipyard, was presented to the public for the first time at a formal ceremony.
SVA Potsdam was in charge of the on-board measurements. Measurement parameters included thrust and torque measurements on both ship shafts, rudder angle measurements and pressure pulse measurements in the ship’s outer skin at a speed of approx. 27.5 knots. The test program was developed in close coordination of all partners and included autonomously driven Z-maneuvers and turning circle investigations at different rudder angles. The intensive evaluation of the measurement campaign and the comparison to the model measurements resp. simulation calculations is the task of all project partners for the next weeks and months.
The R&D project “AutoPlan – Automatic Navigation Assistance System for Planing
and Semi-planing Crafts”
The project “AutoPlan” is aimed at the safe and environmentally friendly operation of (semi) planing crafts. The issue of safety is determined by the sporadic occurrence of unstable behavior: the so-called porpoising (pitching or trimming motion) and corkscrewing behavior with rolling motions. These phenomena significantly impair the safety of people and the ship and, last but not least, pose a threat to the mission objectives also due to time delays and additional fuel consumption.
Project partner:
| UZMAR SHIPYARD (Kocaeli / Türkei) |
| Offshore Engineering Solutions Inc. (Mersin / Türkei) |
| FRIENDSHIP SYSTEMS AG (Potsdam Deutschland) |
| TU Berlin – Lehrstuhl Dynmaik Maritimer Systeme (Berlin / Deutschland) |
| SVA Potsdam GmbH (Potsdam / Deutschland) |
| Piri Reis University – Marine Engineering Department (Istanbul / Türkei) |
