Passenger Ferry Research Articles

Improving the hydrodynamics performance of the catamaran passenger

Interest in medium and high-speed marine transportation has acquired a wide variety of research on catamaran hydrodynamics. The demand for high-speed small ship has increased in last period, especially for the passenger ferry boat. The paper considers the assessment of the free surface flow around the hull of the catamaran passenger ship in order to improve its hydrodynamics performance. To accomplish the objective, Computational Fluid Dynamics based on RANS-VOF solver have been used. The free surface treatment is multi-phase flow approach, incompressible and non-miscible flow phases are modelled through the use of conservation equations for each volume fraction of phase. To evaluate the effect of the central bulb positioned between the hull bodies on the ship resistance, nine different sets simulations were carried out for eleven speeds corresponding to Froude numbers between 0.12 and 0.80. Nine different configurations of the bulb considering three different depth and three position along the hull (bow, midship and stern) have been considered. The calculations revealed that wave resistance can be reduced by using a central bulb between the catamaran hulls by up to 8%. This happens when the bulb is positioned at the bow and the stern and for Froude numbers 0.3-0.6.

Ship-to-Shore Wireless Communication for Asynchronous Data Delivery to the Remote Islands

Nowadays, many people who live in remote islands of Indonesia are still facing difficulties in terms of access to information. In the locations where end-to-end communication is not available, the asynchronous approach can be utilized to send information in the form of digital data. In some areas, we could utilize passenger ships or ferries as physical carriers to deliver digital data to the people in the remote islands which are located at a particular range of distance from the ship’s passing routes. This paper reports the channel performance of long-range WiFi connection oversea at 5 GHz using the real ship’s route at the North Sulawesi province‘s water in Indonesia as a sample scenario. The measurement results showed that the most stable ship-to-shore communication can be achieved in ±15 minutes at the maximum distance between the ship and shore of about 4 km. The maximum channel capacity was 120 Mbps for upload (from ship to shore) and 53 Mbps for download (from shore to ship), which is enough to deliver gigabytes of information to the people at the islands every time the ship passes by.

Concept risk assessment of a hydrogen driven high speed passenger ferry

A concept risk assessment of a hydrogen and fuel cell driven high speed passenger ferry has been performed. The study focused on fatality risk related to the hydrogen systems on the vessel, both during operation and while moored in harbour overnight. The main objective with the study was to evaluate whether the risk related to the hydrogen systems is equivalent to that of conventionally fuelled vessels and can be considered acceptable according to the requirements of the IGF-code (International Code of Safety for Ships Using Gases or Other Low-flashpoint Fuels). Since hydrogen behaves differently than other flammable gases, some adjustments to existing models and vulnerability criteria have been proposed. The conclusion of the study is that the estimated risk related to hydrogen systems is relatively low, and much lower than the expected acceptable risk tolerance level of 0.5–1.0 fatalities per 109 passenger km. Furthermore, for the overnight mooring in harbour the estimated risks are well within acceptable limits. The work presented is part of a maritime case study performed within MoZEES, a Norwegian research centre for environmentally friendly technology and zero emission transport.

지역 가치 증진을 위한 장승포 폐 여객선 터미널의 활용 방안 및 브랜드 제안에 관한 융합 연구

산업 구조의 변화와 더불어 세계적으로 노후화된 시설과 쇠락한 유휴산업시설에 대한 재활용 및 도시재생 사업이 활발히 시행되고 있다.BR 본 연구는 장승포 폐 여객선 터미널과 그 일대 활성화를 위하여 시작되었다. ‘유휴 산업시설의 사례’를 조사하고 양상을 파악하여 활용방안과 브랜드를 제안하는 융합연구(convergence study)이다. 본 연구의 목적은 장승포동의 지역 특성에 적합한 도시재생 전략수립을 위하여 지역 특징을 조사하고 설문을 통하여 지역 주민의 의견을 수집하여 장승포 폐 여객선 터미널의 재활용 방향을 수립하는 것이다.BR 따라서 본 논문은 유휴 산업시설의 재생 관련 선행연구를 분석하고, 유휴 산업시설의 문화적 리노베이션 사례를 조사하여 대상지에 적합한 활성화 방안을 도출하고자 시도하였다.BR 연구 결과 및 내용은 다음과 같다.BR 첫째, 사례 조사 결과 최근 국내외 유휴 산업시설의 재활용은 건축물의 전통성과 역사성을 유지하되 지역환경과 쓰임에 적합한 현대적인 문화공간을 조성하는 경향을 볼 수 있었다. 또한 이를 통한 지속가능한 문화, 경제적 활성화를 추구하고 있었다.BR 둘째, 거제시 지역특성 조사 결과 여객선 터미널의 운항 중단 이후 주변 상권이 침체되었으며, 거제시는 여객선 터미널의 재활용과 더불어 관광 활성화를 도모하기 위해 장승포 폐 여객선 터미널을 국제항으로 추진하고 있었다.BR 셋째, 주민 대상 설문조사 결과 과반수 이상의 지역주민이 장승포 폐 여객선 터미널의 기능 복원에 찬성하며, 지역 내 문화 공간의 부재에 따른 문화적 욕구충족을 원한다고 답하였다.BR 이러한 연구 결과를 바탕으로 거제시 장승포동 폐여객선 터미널의 재활용 방안으로 지역적 특성과 주민 의견을 반영하여 여객선 터미널의 기능을 복원하고, 문화공간으로서 활용될 수 있는 방안과 이에 적합한 장승포 폐 여객선 터미널의 새로운 브랜드명과 디자인 안을 제안하여 거제시의 지역 가치 증진에 기여하기를 기대한다.

Trimaran Structural Weight Optimization Based on Classification Rules

Structural optimization is one of the important aspects of the overall ship design process. A number of advanced optimization tools are available. As these tools require large computational resources, they are not suitable for use in the preliminary design stages, when many important aspects of the design, such as overall dimensions and hull configurations, are determined. This article describes the development of an efficient structural weight optimization method for a trimaran hull form within the governing rules and regulations of the classification society. The method is particularly useful in the early design stage because of its simplicity. Two trimaran hull forms (HSTT-180 and TriFerry) are selected and optimized using the multi-island genetic algorithm optimization process. The weight optimization process achieved a weight reduction for HSTT-180 and TriFerry of about 32.85% and 8.95%, respectively. Furthermore, in both cases, optimum structural weights were obtained with smaller values of main-hull and side-hull stiffener spacing but higher values of main-hull frame spacing. Results obtained indicate that the structural weight of trimaran designs, such as those referenced here, can be substantially reduced by advanced optimization methods. 1. Introduction High-speed ships are of increasing interest for diverse applications, including military and commercial purposes. Hydrodynamic requirements for many high-speed concepts can only realistically be addressed by multihull designs since multihull ships provide better performance than monohull ships at high speeds. Trimaran hull form vessels, in particular, can offer several favorable characteristics over comparable monohulls, including fuel efficiency and the possibility of superior seakeeping characteristics (Fuentes et al. 2015). Trimarans are designed as Ro-Ro and passenger ships, ferries, containers, and military vessels. Multidisciplinary design and optimization (MDO) of trimarans, particularly at the synthesis design level, is an active area of research (Hefazi et al. 2010, 2011). A major element of the MDO process is the development of a structural optimization subsystem to investigate the impact of variations in vessel configurations on structural design and weight. A number of advanced analysis tools for calculation of structural weight are available. However, these tools require large computational resources and time and as such are not suitable to use in the preliminary design stages. Ironically, that is when many important aspects of the design, such as overall dimensions and hull configurations, are often determined. Therefore, an efficient method for calculation of structural weight, and its integration in an automated optimization process, is highly desirable and is the focus of this article. This approach allows structural weight optimization to be included in determining important principal characteristics of the ship at the early stage of the design.

Monitoring of Ultrafine Particles in the Surrounding Urban Area of In-Land Passenger Ferries

Maritime transportation, widely used both in international transport of goods and touristic purposes, has been identified as a significant source of ultrafine particles (UFP). In-land passenger ferry is a source of UFP far less addressed; however, in locations with relatively high frequency of this transportation mode, it is expected that they contribute to an increase of their concentration. Moreover, the negative effects of UFP on human health and environment are known and therefore, monitoring UFP produced by ferries is vital to assess the degree of exposure of who work or live close to ferries’ terminals or downwind to their cruising path. This work aims to study the influence of in-land ferries activities on UFP in the urban/suburban areas near ferries’ terminals and downwind across the cruising path. The UFP monitoring campaign was carried out from September to December 2018 for 19 non-consecutive periods. The sampling sites were chosen in order to maximize measurements under downwind conditions and allow the association between ferry operation and UFP concentration response. Based on data collected, correlation analysis was performed between ferry’s traffic and particle number counting (PNC) of UFP, and also with meteorological variables. Results show an increase in PNC ranging from 25 to 197% during the third minute around a ferry movement and are moderate to positive significant correlations between PNC values and the number of ferry operations (r = 0.79 to r = 0.94), showing that UFP emitted by in-land ferries contributes to PNC increase. Moreover, negative correlations (r = -0.85 to r = -0.93) between PNC and wind intensity were also found.

Remotely Operated Passenger Ferry

Remotely Operated Passenger Ferry

Electric marine ferries – a Norwegian example

When it comes to the implementation of e-mobility (electro-mobility) solutions, Norway is a world leader. The scientific expedition to the Norwegian fjords, organised as part of the ELMAR project in 2018, created an opportunity to visit selected passenger ferries and car and passenger ferries. The experience gained by the authors during that visit is presented in this article.

Thermo-Economic Analysis and Environmental Aspects of Absorption Refrigeration Unit Operation Onboard Marine Vehicles: Ro- Pax Vessel Case Study

Abstract Marine diesel engines lose a huge amount of fuel heat content in the form of exhaust gas and jacket cooling water, especially onboard high-powered marine vehicles such as Ro-Pax ships. In this paper, the possibility of using the waste heat of marine diesel engines as a source of heat for air conditioning absorption system is investigated. The thermodynamic analysis, in addition to the environmental and economic analysis of the air condition absorption cycle operated with two heat sources using lithium bromide as absorbent, are performed using the Engineering Equation Solver (EES) software. The last 10 years have seen a steady growth in the passenger ferry and Ro-Pax market, with particularly strong growth in passenger numbers. As a case study, a Ro-Pax vessel operating in the Red Sea area is considered, regarding the profitability of using air conditioning absorption system. The results show specific economic benefits of the jacket cooling water operated absorption refrigeration unit (ARU) over the exhaust gas operated unit, with annual costs of capital money recovery of 51,870 $/year and 54,836 $/year, respectively. Environmentally, applying an ARU machine during cruising will reduce fuel consumption by 104 ton/year. This, in turn, will result in reducing NOx, SOx, and CO2 emissions with cost-effectiveness of 7.73 $/kg, 20.39 $/kg, and 0.13 $/kg, respectively.

ПРИМЕНЕНИЕ СОЛНЕЧНЫХ БАТАРЕЙ НА ОБЪЕКТАХ МОРСКОЙ ИНФРАСТРУКТУРЫ

The article discusses the use of solar batteries as an alternative source of energy in marine power plants, as effective replacement of conventional sails with "solar sails" with semiconductor elements. There have been identified main advantages and disadvantages of three main types of solar batteries: monocrystalline, polycrystalline and amorphic. There has been given the characteristics of the actual value of the factual insolation (irradiation of the surface by a parallel beam of light coming from the direction where the center of the solar disk is visible at a given time) in calculating hybrid solar energy systems, which, if the criteria are clearly defined, can significantly increase the efficiency of their use. The analysis of the application of solar batteries on sea vessels is carried out, taking into account the geographic component and the number of light days. The article also determines the possibility of using solar batteries for various types of sea transport (cargo and passenger ships, yachts, ferries and others).

CARB funding awards for fuel cell powered cargo handling, ferry

The California Air Resources Board has awarded $20 million in grants to accelerate the state's transition to zero-emission off-road equipment in the freight, agriculture and waterborne mass transit sectors. The successful projects include fuel cell powered cargo-handling equipment at the Ports of Los Angeles and Long Beach, and a hydrogen-powered passenger ferry in San Francisco Bay.

The Partial Organization of Networked Corruption

This article uses the concept of partial organization to examine how organizing principles can facilitate the effective operation of networked forms of corruption. We analyze the case study of a corruption network in the South Korean maritime industry in terms of how it operated by selectively appropriating practices normally associated with formal bureaucratic organizations. Our findings show that organizational elements built into the corruption network enabled coordination of corruption activities and served to distort and override practices within member organizations. The network was primarily organized through the hierarchical organization of a bounded and controlled set of members and, to a lesser extent, through processes of monitoring and sanctions. Given its clandestine nature, the network avoided the use of explicit rules to govern behavior, instead relying on habituated routines to ensure consistent and predictable action from members. We find that organizational elements were rescinded when the corruption network was exposed after the sinking of a passenger ferry, the Sewol. By rolling back its hierarchical organization and reverting to core relationships, the corruption network sought to preserve its center. The article illustrates the explanatory value of studying how the activities of corruption networks are enabled and adapt to existential challenges through partial organization.

Global sensitivity analysis and repeated identification of a modular maneuvering model of a passenger ferry

In the paper a modular manoeuvring model of the passenger ferry “Landegode” is built, validated and studied. Global sensitivity analysis based on the variance decomposition is performed to assess the sensitivity of the individual model coefficients on the simulation outcomes. It is found that uncertainty in both hull hydrodynamic coefficients and the steering and interaction coefficients can result in significant uncertainty in the simulation results. The most influential coefficients are defined for the standard IMO manoeuvres. The possibility of identification of “true” values of the coefficients from full scale trials is studied. Such analysis would allow improving empirical predictions of the coefficients. It is found that different combinations of the model coefficients result in similar time-series. This indicates the presence of correlation between the coefficients. Thus, although the identified coefficients can be used for simulations of the ship manoeuvring, it is impossible to identify the single “true” value for each coefficient from these sea trials.

Comparison of organic Rankine cycle concepts for recovering waste heat in a hybrid powertrain on a fast passenger ferry

The possibilities of recovering waste heat from the exhaust gas and other waste heat sources from a 900 kW fast passenger ferry Diesel engine by means of an organic Rankine cycle (ORC) were investigated. The recovered energy is to be used in a parallel hybrid powertrain, which would allow for electric propulsion and thus low emissions near stopovers while electricity generated by the ORC when the engine is running at cruising speed is stored in a battery. The benefit of such a solution is that there would be no extra load on the engine and increased fuel consumption while the local emissions around the stopovers could be reduced, which is especially desirable in urban environments. Simple organic Rankine-cycles with and without internal energy regeneration and an organic Rankine cycle with two different heat sources have been modelled. Different working fluid candidates have been compared by means of a simple optimization routine with respect to the maximum recoverable amount of work from the cycles’ expander. The method is applied to a vessel serving a typical short fast passenger ferry route between the harbour of the Western Norwegian city of Bergen and the neighbouring Askøy municipality.

Empirically Determined Passenger Ferry Navigable Routes within Lagos Lagoon

Hydrographic surveys define shorelines and depths of lakes, streams, oceans, reservoirs, and other bodies of water. Sea surveying is associated with port and offshore industries and the marine environment, including measurements and marine investigations made by ship-borne personnel. In addition, accurate measurement and modelling of hydrographic information is important to control waterways boat services with existing roadway transportation services. This paper attempts an empirical analysis of hydrographic data to simulate waterway navigable route within Lagos Lagoon with a minimum under-keel clearance that must be maintained by vessel transiting a port as well as berthing. The field investigation was conducted between September 2015 and March 2016 to determine river bed topography with the deployment of DGPS receivers, Single beam SDE 28S echo sounder, speed boat, tidal observation and reduction. Hypack 2008 and Arc GIS software was used for data sorting, extraction and processing. It was observed that depth within the project area ranges between 0.0m to 14.82m when referred to the Lagos datum. Furthermore, waterway navigable chart was developed based on prevailing river bed topography along the study corridors as well as passenger ferry draught constraint. From this study, derived depths were analysed in form of graphs and charts that provides a suitable framework to support ferry transportation services within Lagos Lagoon as a complimentary mode to the dominantly depended road transportation services. Therefore, periodic hydrographic survey of the navigable routes is recommended specifically to identify possible channel accretion. Keywords : Navigable routes, hydrographic information, empirical analysis, under-keel clearance, river bed, topography

Supplying hydrogen vehicles and ferries in Western Norway with locally produced hydrogen from municipal solid waste

Gibbs free energy minimization has been used to estimate the hydrogen production potential of air gasification of the wet organic fractions of municipal solid waste available in the Bergen region in Western Norway. The aim of this work was to obtain an upper limit of the amount of hydrogen that could be produced and to estimate of the number of vehicles: passenger ferries and cars that could be supplied with an alternative fuel. The hydrogen production potential was investigated as function of waste composition, moisture content, heat loss, and carbon conversion factor. The amount of hydrogen annually available for both gasification and gasification combined with water-gas-shift-reaction was calculated for different scenarios. Up to 2700 tonne H2 per year could be produced in the best case scenario; which would, if only utilised for maritime operations, be enough to supply nine ferries and ten fast passenger boat connections in the Hordaland region in Western Norway with hydrogen.

Design and Validation of a Passive Radar Concept for Ship Detection Using Communication Satellite Signals

In this paper, the feasibility of a bistatic passive maritime surveillance system based on the use of communication satellites as illuminators of opportunity is considered and confirmed experimentally. A theoretical comparison of the characteristics of a radar using Inmarsat and Iridium signals as donors has been performed. The procedure of enhancing the range resolution by coherently combining available scarce active communication channels in the frequency domain is presented with the example of the Inmarsat I-4 satellite broadband global area network signals. Parameters affecting the performance of range-Doppler mapping of a target are investigated based on the analysis of the ambiguity function of the combined signals. An experimental set-up with a stationary passive receiver designed for acquisition and processing of Inmarsat signals is presented and the results are shown. The detection and estimation of radial velocities by reflected Inmarsat signals are presented for the first time. The detected maritime targets ranged in size from a large passenger ferry to a small boat. The potential limitations of the concept are outlined, together with ways to overcome them.

An Experimental Investigation on the Dynamic Response of a Damaged Ship with a realistic arrangement of the flooded compartment

The dynamics of a damaged ship in waves is a complex phenomenon regarding fluid and structure interactions. Flooded water motions in the damaged compartment could be influenced by decks, obstructions and obstacles in the compartment. This becomes particularly relevant in case of flooding in the engine room that is usually characterized by the presence of large objects such as engines and machineries. In such cases the possibility to better understand the behavior of a damaged ship, influenced by the fluid and structure interactions, could provide novel outcomes and thus enhance the damaged ship safety.In this paper an experimental campaign is conducted on a passenger ferry hull. The effects of obstacles in the engine room compartment, such as decks and engines, on ship roll responses, are studied. Roll decay in still water and steady roll responses in beam regular waves at zero speed are measured for the empty compartment and for the compartment with obstructions, as defined above.The main outcomes from the conducted experiments disclose a mitigation of the resonant behavior of the coupled system, ship with damaged compartment, by having engine shapes occupying the flooded engine room. Moreover it is possible to observe how the resonant frequency of the ship modifies having a more realistic arrangement of damaged compartment and how motion RAOs and roll decay characteristics modify accordingly.

Sandia optimising hydrogen powered SF Bay passenger ferry

Researchers at Sandia National Laboratories in California are moving to the next stage in a study into the potential for zero-emissions, electric-powered passenger ferries utilising renewable energy in San Francisco Bay. They will now focus on the optimal combination of vessel design, speed and passenger capacity, and on technical evidence to support appropriate new safety codes.

The prevalence of post-traumatic stress disorder (PTSD) in Korean parents lost their children by the tragic sinking of ferry Sewol

A South Korean passenger ferry, the Sewol, carrying 476 people, capsized and sank in 2014 resulting in 295 deaths and 9 missing. Most were high-school students on a school trip (246 deaths, 83.4%) and many parents who lost their children had suffered from a wide range of mental and physical health consequences. This research examines the extent and intensity of ongoing psychological distress and PTSD symptoms among the parents 2 years after the disaster. The 141 parents of the high-school victims agree with research participation were surveyed using a questionnaire on sociodemographic data. We conducted the structured clinical interview including PTSD and suicide assessment for them. Among the 141 subjects, 56.0% (n = 79) meet the PTSD diagnostic criteria, suggesting that, after two full years, more than a half of them are still suffering from chronic psychological pains. This result is higher than any other PTSD study about indirect victims. In particular, 42.6% (n = 60) reported suicidal ideation and 4.3% (n = 6) actually attempted suicide but failed. These figures are on the order of 10 to 100 times higher than the national prevalence. This research is characterized by homogeneity of the subjects in that they were all the parents of young adolescent victims. After two years of traumatic experiences, more than a half of the interviewed parents who lost their children are still suffering from the PTSD. These findings suggest that post-disaster PTSD can be larger and last longer when the relationship was more intimate and the death of the victim was less expected.Disclosure of interestThe author has not supplied his declaration of competing interest.