This article proposes an analytical model for a conversion from Heavy Fuel Oil (HFO) to Liquide Natural Gas(LNG) dual-fuel engine in a fleet with three sizes of vessels in order to investigate the impact of the volatility of oil prices, and a declining Energy Return on Investment (EROI) on opting LNG …

This study shows that the main predation pressure in the Dutch Wadden Sea is found to be on calanoid copepods, being the main prey item of C. harengus, A. tobianus, C. edulis, A. aurita and M. leidyi. Bivalve veligers are also found to be widely ingested by predator species, with the main predators being …

Het gebruik van Dynamic positioning (DP) wordt op veel schepen toegepast waaronder op het schip de Aegir van het bedrijf Heerema Marine Contractors. Het DP systeem heeft hierbij een initiële positie input nodig wat verkregen wordt via GNSS plaatsbepalingssystemen. Aan boord van de Aegir bevinden zich …

The Nieuw Statendam is equipped with a program called ENIRAM. This program calculates the optimal engine configuration and load expressed in revolutions per minute of the propellers. The issue with this program is that it only looks at the main power plants and does not take the waste heat recovery system …

To limit the pressure on the marine ecosystem, the European Unions’ Marine Strategy Framework Directive (MSFD) was developed to ensure sustainable use of the marine ecosystem. The goal of the MSFD is to achieve Good Environmental Status (GES). To achieve this goal, the MSFD prescribes using Ecosystem-Based …

Marine debris is a growing global problem. Due to the wide ocean dynamics worldwide, predicting the transport of floating marine debris, such as plastic, is difficult. Although large-scale distribution patterns and accumulation zones are recognised and reproduced by numerical models, small-scale prediction …

While the consumption of plastic by marine wildlife is well-studied, it is less so for terrestrial species. Anthropogenic pollution is an ever-increasing threat to the natural environment, and this is also the case in South Africa. Creating awareness and management strategies to decline the availability …

Increased spatial pressures on the marine environment asks for smart use of space in order to safeguard the achievement of environmental, social and economic objectives. Multi-use is seen as a new paradigm for space efficiency and might yield other benefits beyond that. Within the scope of their Policy …

Today the awareness about anthropogenic waste and litter in the marine environment is rising. There is evidence on the threat to marine ecosystems through plastic litter, all over the world. To understand this issue better citizen science projects, help to gather data about the distribution and origins …

Azorean waters have long been known to be inhabited by a vast number of cetacean species, representing a hotspot for marine wildlife within the North Atlantic. Various ecological factors are related to the complex habitat requirements of marine species such as water temperature, physiography and presence …