...Nader R. Ammar _ The present paper proposes using methanol fuel in ships to meet emissions regulations established by the International Maritime Organization. An analysis of the use of twin fuel engines operated by diesel and methanol has been conducted from environmental and cost-effective...

... a recent push in maritime education, surveys of maritime workers and stakeholders, and fabrication of replacement parts, propellers, and boat hulls. Prospective key areas with the need for further research include 1) use-cases for replacement parts on ship, 2) economic feasibility of putting 3D printers...

...Murat Bayraktar; Murat Pamik The average age of the global merchant fleet has been declining with the increasing number of new ship constructions and dismantled ships. Although a noteworthy part of ship dismantling and recycling (SDR) facilities have been performed in Asian countries, such as India...

... within other sectors. This study explores how to reach the IMO 2050 GHG targets exclusively through energy efficiency measures. The results indicate that by combining wind-assisted ship propulsion (WASP) with a slender hull form, fuel consumption and GHG emissions can be reduced by 30–35%, at a negative...

...Mehmet Kirmizi; Serkan Karakas; Hakan Uçar _ Ship design is a complex study requiring the coordination of many disciplines and accurate calculations, as well as cost considerations. Thus, ship designers have to design the naval ships that successfully fulfill the desired performance in a cost...

...Julie Chalfant; Hauke Kite-Powell; Luca Bonfiglio; Chryssostomos Chryssostomidis In an effort to combat climate change, the International Maritime Organization (IMO) has set ambitious goals for the reduction of greenhouse gas emissions from ships, with a target of at least a 50% reduction of total...

...Johanna M. Daniel; Max G. Schuster; Gyde Andresen-Paulsen; Florian Holz; Kurt Wittekind; Sören Ehlers _ The aim of this paper is to investigate the relationship between design and operational ship parameters with respect to radiated underwater noise and to develop a semiempirical noise prediction...

...Björn Windén; Hikaru Kamiirisa _ In addition to pressure to improve energy efficiency, the maritime industry may soon face demands to reduce underwater noise from shipping. This is illustrated by a large number of studies being reviewed by UN panels to bring clarity to the subject. In this paper...

...Marco Semini; Per Olaf Brett; Jan Ola Strandhagen; Jørn Vatn To save costs and build competitiveness, Norwegian shipyards usually offshore some of the processes required to produce a ship, especially steel-related tasks, i.e., they have them carried out in a country with lower factor costs...

...Ki-Su Kim; Myung-Il Roh; Seung-Min Lee When a ship is damaged at sea, it is important to predict its behavior as well as whether it is to sink or not. If the ship comes to an equilibrium, the equilibrium position and time should be estimated; otherwise, the time to sink should be estimated...

...Vittorio Bucci; Giorgio Sulligoi; Julie Chalfant; Chryssostomos Chryssostomidis Modern ships are highly complex technological systems and have a long and resource-intensive development cycle. Moreover, the final design must comply with many specific technical and regulatory requirements while...

...John C. Daidola Modularity in the design and construction of naval vessels is considered wherein functional naval system-module installations that provide basic ship structure and ship interfaces are permanently integrated in an otherwise conventional ship envelope during construction...

...Arun Kr Dev; Makaraksha Saha Structural steel renewal in ship repairing is a routine work throughout the service/ operational life of a ship. Prior information about the renewal quantity helps the shipowners to allocate an appropriate budget and the shipyard to prepare the proper ship repairing...

... be commonly used in different ships, a design structure matrix was adopted. Third, in the arrangement design, an optimization system was developed using a genetic algorithm to obtain a similar pattern for module arrangement in multiple series ships with specific consideration toward cost and similarity. Some...

... for the generator temperature of 160 C. Although the COP of refrigeration is low, the absorption refrigeration system can be provided a great cooling load from the exhaust heat of diesel engines and can be used in naval surface ships. In addition to energy efficiency of naval surface ships, infrared and acoustic...

... survivability after damage. A parametric model is used to specify the internal layout of a tanker ship considering a fixed hull shape and regulatory framework. The design variables include positions of watertight members in the internal layout, such as watertight bulkhead position, double-bottom height...

... manufactured in their installations a great variety of ships, each one with a high component of technological innovation. The high quality of their products and their adaptability to custom orders from the ship owners have led the naval construction sector to be currently identified at an international level...

...Nader R. Ammar; Mohamed M. Elgohary; Akram Zeid; Ahmed G. Elkafas The importance of ship hydrodynamic parameters has increased since the advent of power-driven vessels in the 19 th century. The required power for the propulsion unit depends on the ship resistance and speed. There are three...

...Arun Kr Dev; Makaraksha Saha Structural steel renewal (repair/replacement) is carried out as a part of routine maintenance of a ship during its service life. Structural steel renewal is a result of the structural deficiencies beyond the limit set by the classification societies, regarding either...

...Paul W. Stott Commercial shipbuilding in the 21 st century is dominated by large suppliers, constructing series' of ships in highly efficient shipyards. The industry would be unrecognizable to shipbuilders from a century ago and this raises the question as to when the modern form developed. Much...