We offer you an Ocean of Possibilities. Join our family. About us At Damen, much effort is put into designing silent and comfortable ships. Therefore, sound level predictions are made to judge the feasibility of each design. This of course asks for accurate prediction methods. Aspects covered in these prediction methods are: The prediction of structure borne as well as airborne excitation levels of diesel engines, gearboxes, generator sets, propellers, etc. Predicting the dynamic response of the ship structure, such as the input mobility of the engine foundation and the transfer of vibrations through the ship structure. Prediction of attenuations due to acoustic countermeasures, such as resilient mountings, floating floors, visco-elastic damping, additional absorption, etc. Prediction of radiation of lining and absorption of the sound levels in the cabins. Prediction methods always need validation by means of measurements. For this purpose, use is made of advanced measurement equipment. Within the RD&I department, the research team Sound & Vibrations is dedicated to the development of these tools. One of the team members of this team will act as daily supervisor. The role During Damen sea trials, extensive datasets are collected (audio, accelerations, operational parameters). Analyzing these data is labor-intensive and highly dependent on expert knowledge. By using automatization, source identification and characterization can be (partly) automated. This leads to faster interpretation of noise measurements and objective detection of critical events (cavitation, resonances, out-of-tolerance behavior). All in all, better linkage between measurements, modeling (SEA/FEM), and design parameters. Your work as an intern is to develop the required methodology to analyze the time domain data and demonstrate the method in a tool. Project Objective Develop a method and build a tool that analyzes an audio recording from a sea trial and automatically: Identifies acoustic sources (diesel engine, electric motor, propeller, cavitation, turbulence, pump/HVAC, etc.). Determines source characteristics (rotational speed/RPM, number of blades/cylinders, etc.). Quantifies the acoustic contribution per source (level, spectrum, and derived metrics). Performs source separation (acoustic representation of the contribution of each detected source). The final result is a prototype that supports acoustic experts in analysis, troubleshooting, and design validation. Key accountabilities As an intern, you will: Create a model that classifies acoustic sources in an time domain recording of pressures, accelerations, etc. Define source-specific output such as RPM, number of blades, and number of cylinders Create a prototype application (Python/MATLAB) Deliver documentation and evaluation based on real Damen sea trial data Skills & Experience This assignment is intended for a University Master student Naval Architecture / Maritime Technology / Mechanical Engineering / Applied Physics with: Affinity with acoustics such as spectrograms and harmonic analysis Familiarity with signal processing and Machine Learning frameworks Analytical oriented mind set Good programming/scripting skills in Matlab/Python Mastery of the English language (spoken and written) What we offer Academic level mentoring throughout the internship Internship compensation and travel allowance in line with company policy A project with direct relevance to multiple business functions and future digital products Potential for internal rollout, and possibly a publication or conference contribution depending on results Other Are you ready to sail into your new adventure at Damen? Don’t hesitate, send us your motivation letter and resume here. Due to housing issues we cannot accept international students that do not have accommodation in the Netherlands yet. Recruiter: Liselotte van Veenendaal Email: liselotte.van.veenendaal@damen.com Please apply through the Apply Button. Due to GDPR reasons we cannot accept applications by email. Damen has 35 shipyards on five different continents and operates in more than 100 countries. We are still growing and that gives you options. You contribute to this growth while benefitting from the diverse development and career opportunities that our company offers. We will continue to challenge you. With our extensive portfolio of products and solutions you will never get bored and never stop learning. We offer you a world of possibilities. Working at Damen means contributing to the highest quality in shipbuilding, with an eye to the future and future generations. We want to make the world a better place by becoming the most sustainable maritime solution provider. For that, we need you. Become part of our family. We are Damen. We’re a family company that has been building ships for almost 100 years. However, our focus is not on the past, however – we’re looking forward. Our ambition is to become the most sustainable and connected maritime solutions provider there is. To achieve this, we combine digital technology with our philosophy of standardised shipbuilding to offer a portfolio of services that takes care of vessels throughout the entire lifecycle. Working at Damen offers the best of several worlds. Active in more than 100 countries, with over 30 shipyards, we are internationally renowned for quality. And we are still growing, still innovating. Which means we will continue to challenge you. You will never stop learning, and you will never get bored – we promise you that. We offer you an ocean of possibilities. Join our family. 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Graduation: Automation of Sound level predictions.

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