Tertiary Control of Hybrid Tugboats: Fuel savings assessment with equivalent consumption minimization strategy

Towards a method to quantify plastic loss of a floating barrier due to wave overtopping

Plastic pollution in the marine environment is an increasing problem with severe impacts on ecosystems and economies around the globe. The Ocean Cleanup (TOC) Foundation develops a floating barrier able to intercept, concentrate and extract plastic from the marine environment. TOC has conducted several experiments and numerical studies to...

The design of an interactive museum exhibit about a steam-powered sailing ship for middle school groups

In this report you will read about the design of the Codex Bonaire, an engine room experience design of the Bonaire. The Bonaire is a steam powered sailing ship being renovated in Den Helder to be a museum. This project is focused on creating an experience in the engine room that visualises the engine room without building it physically. The...

Safe and effective application of ammonia as a marine fuel

To achieve significant reduction in greenhouse gas emissions in shipping and enable ship owners to phase out fossil fuels entirely, renewable fuels, such as ammonia, play a crucial role. Ammonia is considered a balanced solution in terms of volumetric energy density and renewable synthetic production cost compared to other renewable fuels....

Determining and predicting the seakeeping performance of ships based on jerk in the ship motions

The comfort assessment of ships is based on several criteria. There are for example criteria for motions, noise and vibrations. The criteria for motions are nowadays often defined as comfort limits on the accelerations in the ship motions. However, from other industries it followed that the rate of change of the accelerations, the jerk, can also...

Design of a Fully Electric (Battery/Fuel Cell) Submarine

To improve the submerged time of diesel-electric submarines (SSK), air independent power (AIP) systems have been developed in the past. So far only submarines with AIP systemsin combination with one or more diesel generator (DG) sets are designed and built. The increased technological readiness level of modern fuel cells (FC) and the energy...

An investigation of the internal airfow system behavior of a Turbosail

The awareness of the climate change is increasing and the effect of air-pollution is irrefutable. To decrease the emissions of large ships the required amount of fuel has to be minimized. This is done by increasing the efficiency of the engine, decreasing the hull resistance or by lowering the cruise speed. Another interesting way of decreasing...

Shipping Renewable Hydrogen Carriers: A study on the impact of shipping renewable hydrogen carriers and using those as a fuel on, the ship design, the different powertrain configurations, and the cost of transported hydrogen

Hydrogen enables renewable energy storage, and hydrogen carriers can allow easier transportation. This research was initiated to get more insight into transporting renewable hydrogen carriers (RHCs) by ship, which is one of the transportation options. The research was conducted in three steps. First, a system description with a literature study...