A Model Predictive Control Approach Towards the Energy Efficiency of Submerged Dredging

Due to the expected increase in coastal replenishment along the Dutch coastline, and the need to decrease pollutant emissions in the Netherlands and worldwide, the Autonomous Low Energy Replenishment Dredger (ALERD) is developed. The ALERD is a sustainable and cost-effective solution to perform coastal replenishment work along the Dutch...

Multi-Horizon Prediction of Power Consumption during Dynamic Positioning Operations: Physical, Data-Driven and Hybrid Model Approaches

A significant decrease in greenhouse gas emissions can be achieved by including a prediction of future power consumption in the control of ships’ power plants during transits. Moreover, including a prediction of power consumption in the Energy Management System (EMS) during Dynamic Positioning (DP) operations can also contribute to a reduction...

Electrical Signature Analysis for Induction Motor Driven Thruster Assemblies

This research analyses the potential of Electrical Signature Analysis (ESA) as a means for condition monitoring of mechanical defects of induction motor driven thruster assemblies in the maritime industry. This is done by measuring the three phase current and voltage of three thrusters, with different health conditions, of a marine vessel...

Optimal Control Energy Management Strategy for Hybrid Propulsion and Power Supply Vessels using Data-Driven Load Forecasting

Hybrid technology can significantly reduce fuel consumption and emission for vessels that have high power demand peaks followed by long periods of low loading. Hybrid technology refers to powertrain layouts that consist of hybrid propulsion and/or hybrid power supply. Advanced energy management strategies (EMS) are required to make optimal use...

Physics-based, data-driven, and hybrid methods to predict the energy requirements for cargo heating: a case study for chemical tankers

Chemicals within a chemical tanker need heating to keep the cargo above a desired temperature. This research focuses on the prediction of the fuel consumption used to heat the cargo. There are three methods discussed in this research: a physics-based model (PBM), a data-driven model (DDM) and a hybrid model (HM). The PBM is a model based on the...

A Health-Aware Control Strategy for Enhanced Performance and Extended Hybrid Powertrain Lifecycle: A benchmark of different cost functions

The urgent need for marine transportation to reduce CO2 emissions has led to considering alternative energy and storage sources. The resulting increase in the complexity of powerplant architectures led to the development of advanced control strategies to achieve energy savings. At the same time, the health status of components has been often...

Determination of Energy Requirements for Submarine Operations in Shallow Water: An Investigation of the Contribution of Environmental Forces and Seabed Effect

It is known that the Dutch North Sea coast consists mostly of sand, which creates the need for continuous maintenance. <br/>For the time being, these maintenance activities are carried out with the aid of trailing suction hopper dredgers (TSHDs), which emit greenhouse gases during dredging operations. <br/>As the world continues to prioritize...

A Finite Element Analysis Investigation of Fatigue and Corrosion of Floating Offshore Wind Turbine Mooring Lines

With the rising demand for renewable energy, floating offshore wind turbines have gained importance, particularly in regions where deep waters prevent the use of traditional monopile structures. These floating turbines rely on mooring lines for stability against environmental conditions, particularly when facing strong winds and high waves....

Transshipment for the 21st Century: A Novel Approach to Deep Sea-Hinterland Transportation

Transshipment is a key component of modern-day shipping logistics. Container supply chains rely on transhipment hubs to access remote locations. With globalisation driving growth in container trade, maritime congestion is rising at container terminals in ports worldwide. This is expected to worsen as demand continues to grow. The ill effects of...

Design and Operation Optimization of Hybrid Energy Systems for a General Cargo Vessel: Well-to-Wake Emission Analysis and Plant Lifetime Estimation

The Global Shipping industry is responsible for transporting 90% of global commerce and is responsible for 3% of global greenhouse gas (GHG) emissions. Addressing this, the International Maritime Organization (IMO) aims to reduce GHG emissions from international shipping by 40% by 2030 and achieve net zero by 2050. This study explores Low...

Local Path Planning for a Deep-sea Nodule Collector

The shift to sustainable energy sources has increased demand for Energy Transition Metals such as nickel, copper, cobalt, and manganese. To satisfy this need while reducing the negative social and environmental effects of conventional mining, Deep-sea Nodule Collection (DSNC) appears to be a feasible option. Despite its potential, DSNC...