Modeling the Seakeeping Performance of Luxury Cruise Ships

The seakeeping performance of a luxury cruise ship was evaluated during the concept design phase.By comparing numerical predictions based on 3-D linear potential flow theory in the frequency domain with the results of model tests, it was shown that the 3-D method predicted the seakeeping performance of the luxury cruise ship well.Based on the model, the seakeeping features of the luxury cruise ship were analyzed, and then the influence was seen of changes to the primary design parameters (center of gravity, inertial radius, etc.).Based on the results, suggestions were proposed to improve the choice of parameters for luxury cruise ships during the concept design phase.They should improve seakeeping performance.

Occurrence of micropollutants in the wastewater streams of cruise ships

Nowadays the protection of the marine environment raises increasing academic and public attention.The issue of organic micropollutants is of equally high importance for the marine ecosystems.Maritime vessels are considered to significant sources of micropollutants especially if the ship carries many passengers,which is often true for cruise ships which frequent attractive and sensitive sea areas.The emission pathways for micropollutants include wastewater discharges and sewage sludge disposal.The findings of the German research and development project NAUTEK contribute to bridging the knowledge gap about micropollutant emissions from cruise ships.As expected,micropollutants were detected in both the blackwater and greywater on board,emitted from either the passengers or certain ship operations.In total,16 out of 21 target substances were detected.Peak concentrations of pharmaceuticals could be found mainly in blackwater(peak conc.Carbamazepine 3.9 mg/L,Ibuprofen 29 mg/L,Diclofenac 0.04 mg/L),while greywater is mainly characterized by substances such as ointment residues,UV-filters and flame retardants(peak conc.Diclofenac 0.65 mg/L,Bisphenol A 8 mg/L,Tris(1-chloro-2-propyl)phosphate 136 mg/L).Further analyses suggest a gradual removal of the micropollutants by the onboard MBR plant(MBR effluent peak conc.Carbamazepine 0.47 mg/L,Ibuprofen 6.8 mg/L,Diclofenac 0.3 mg/L).Findings of this research provide a critical stepstone for shaping technical solutions for onboard micropollutants removal and water resource recycling.

A Study on the Factors Influencing Value-Added in the Cruise Ship Value Chain Based on the DEMATEL-ISM Model

Cruise value chain is to take the exchange of cruise products and services as the core in a certain spatial scope,and enterprises with core advantages within or between different industries establish associations in accordance with certain technical and economic conditions,so as to realise the multi-dimensional extension and value appreciation of the cruise value chain in the vertical and horizontal links,and ultimately establish a chain-network type of enterprise strategic alliance.This paper tries to analyse the value-added factors of the cruise industry chain by constructing a multi-level hierarchical structural model with reference to the influencing factor analysis methods of relevant literature-DEMATEL(Decision Making Experiment and Evaluation Experiment)and ISM(Interpretative Structural Model).The study shows that the innovation and scale value-added module in the upstream of the cruise industry chain is the core module of value-added of the whole cruise industry chain,and the value-added mainly originates from the design and manufacturing of cruise ships.The middle reaches of the cruise industry chain are mainly cruise operation enterprises,and the specificity of cruise operation determines that its brand value-added is mainly accomplished through the global layout of multinational corporations,and the cruise brand is able to drive the consumption demand and has value-added ability.The downstream value-added of the cruise industry chain is mainly realised through the increase in profits of cruise tourism service products.

A Case Study of a Solid Oxide Fuel Cell Plant on Board a Cruise Ship

The work is a case study of a cruise ship supplied by liquefied natural gas(LNG)and equipped with a solid oxide fuel cell(SOFC).It is supposed that a 20 MW SOFC plant is installed on-board to supply hotel loads and assisting three dual-fuel(DF)diesel/LNG generator sets.LNG consumption and emissions are estimated both for the SOFC plant and DF generator sets.It results that the use of LNG-SOFC plant in comparison to DF generator sets allows to limit significantly the SO_(x),CO,NO_(x),PM emissions and to reduce the emission of CO_(2)by about 11%.A prediction of the weight and volume of the SOFC plant is conducted and a preliminary modification of the general arrangement of the cruise ship is suggested,according to the latest international rules.It results that the SOFC plant is heavier and occupies more volume on board than a DF gen-set;nevertheless,these features do not affect the floating and the stability of the cruise ship.

Cruise enterprise strategic research of new media from the perspective of the Internet

From the origin of the modem cruise industry in 1960s, the media has been in the spread of the cruise culture has a pivotal position. In today＇s world, the new media has become an important means of human information dissemination. The so-called new media, refers to the fixed or mobile multimedia terminals through the digital communication and services to provide information and services. It is different from newspapers, magazines, radio, television and other traditional media forms, has become the fifth media＂. The new media has the characteristics of fast speed, wide spread, and the emergence of new media has led the revolution of information dissemination. Under the influence of new media, the spread of cruise tourism culture no longer stay in the traditional newspaper, printed brochures, advertising, Festival Promotion and so on, but through the micro Bo, micro channel, etc. new media cruise ship culture promotion. This paper will explore the role of new media in the development of the media and the culture of the cruise company.

Research on Resource Development Countermeasures and Environmental Governance of Cruise Tourism Enterprises in China

The development of tourism resources aims to process tourism raw materials into direct-consumption tourism products. The essence of this behavior is innovation. The theory of innovation in economics, management, sociology, oriental management, and related disciplines provided methodology for the development of tourism resources and pointed out the direction. With the development of tourism, the cruise economy has grown and the urban economy has been rapidly developed and improved. However, while cruise tourism brings economic benefits, the discharge of various waste water and exhaust gas from cruise ships of major cruise companies also brings about some environmental pollution problems. Therefore, the environmental protection issue of cruise tourism companies is a sustainable development issue. Persisting in sustainable development strategy, we attach importance to the environmental governance of the cruise tourism industry.

Reducing Uncertainty in Subdivision Optimization

Design of watertight subdivision inherently involves its optimization with the objective to increase the index ＂A＂ above its minimum required value. In view of a big popularity of probabilistic search methods such as genetic algorithms, this task is intrinsically time consuming. Thus, even when an optimal subdivision layout （i.e. topology） is determined, it can be found that the optimal bulkhead positions can be a great challenge time-wise, often forcing designers to satisfy with suboptimal solutions. The fundamental reason why this happens is that the nature of the optimized function （e.g., index ＂A＂ as a function of bulkhead positions） is unknown and hence it has no effect upon the choice of optimization strategy, which therefore reflects subjective but not factual preferences. In this paper we study the nature of functional dependency between the subdivision index and bulkhead positions, as a simplest case, and indicate pertinent optimization strategies that consequently reduce the optimization time. In our study we use a cruise ship model to demonstrate the application results of our findings.

August 13-Global Families Get Ready for Summer Fun——100 families will be invited to enjoy the pleasure of the luxury cruise ship Costa Allegra

Italian liner Costa Allegra will start its maiden voyage on the northern route this August.China Merchants International Travel,the general agent for Costa Allegra in north China,has made a block booking of the most popu-