Micro-Computerized Maritime Traffic Simulator

1985 ◽  
pp. 233-241
Author(s):  
T. Degre ◽  
X. Lefevre
Keyword(s):  
Maritime Traffic

scholarly journals Traffic Inequality and Relations in Maritime Silk Road: A Network Flow Analysis

2021 ◽  
Vol 10 (1) ◽  
pp. 40
Author(s):  
Naixia Mou ◽  
Haonan Ren ◽  
Yunhao Zheng ◽  
Jinhai Chen ◽  
Jiqiang Niu ◽  
...  
Keyword(s):  
Traffic Flow ◽  
Network Flow ◽  
Road Traffic ◽  
Flow Analysis ◽  
Silk Road ◽  
Identification System ◽  
Traffic Network ◽  
Trajectory Data ◽  
Maritime Traffic ◽  
Maritime Silk Road

Maritime traffic can reflect the diverse and complex relations between countries and regions, such as economic trade and geopolitics. Based on the AIS (Automatic Identification System) trajectory data of ships, this study constructs the Maritime Silk Road traffic network. In this study, we used a complex network theory along with social network analysis and network flow analysis to analyze the spatial distribution characteristics of maritime traffic flow of the Maritime Silk Road; further, we empirically demonstrate the traffic inequality in the route. On this basis, we explore the role of the country in the maritime traffic system and the resulting traffic relations. There are three main results of this study. (1) The inequality in the maritime traffic of the Maritime Silk Road has led to obvious regional differences. Europe, west Asia, northeast Asia, and southeast Asia are the dominant regions of the Maritime Silk Road. (2) Different countries play different maritime traffic roles. Italy, Singapore, and China are the core countries in the maritime traffic network of the Maritime Silk Road; Greece, Turkey, Cyprus, Lebanon, and Israel have built a structure of maritime traffic flow in the eastern Mediterranean Sea, and Saudi Arabia serves as a bridge for maritime trade between Asia and Europe. (3) The maritime traffic relations show the characteristics of regionalization; countries in west Asia and the European Mediterranean region are clearly polarized, and competition–synergy relations have become the main form of maritime traffic relations among the countries in the dominant regions. Our results can provide a scientific reference for the coordinated development of regional shipping, improvement of maritime competition, cooperation strategies for countries, and adjustments in the organizational structure of ports along the Maritime Silk Road.

scholarly journals Effect of Maritime Traffic on Water Quality Parameters in Santa Marta, Colombia

2021 ◽  
Vol 9 (5) ◽  
pp. 474
Author(s):  
René Rodríguez-Grimón ◽  
Nestor Hernando Campos ◽  
Ítalo Braga Castro
Keyword(s):  
Water Quality ◽  
Petroleum Hydrocarbons ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Maritime Traffic ◽  
Natural Park ◽  
High Concentrations ◽  
The Impact ◽  
The Relationship ◽  
Multiple Chemical

Since 2013, there has been an increase (>23%) in naval traffic using maritime routes and ports on the coastal fringe of Santa Marta, Colombia. Of major concern, and described by several studies, is the relationship between maritime traffic and coastal contamination. This study proposed a maritime traffic indicator considering the simultaneous effects of several relevant measurements of water quality parameters to estimate the impact of naval activity. The approach involved developing a model including the number of vessels, hull length, and permanence time in berths. In addition, water quality variables, considering climatic seasons, were used to verify association with maritime traffic and touristic activities. The high concentrations of total coliforms (TC) and dissolved/dispersed petroleum hydrocarbons in chrysene equivalents (DDPH) reported by the International Marina of Santa Marta (SM) were affected by the local anthropic activities, including tourism, naval traffic, and urban wastewater discharges. Moreover, our results suggest the occurrence of multiple chemical impacts within Tayrona National Natural Park (PNNT) affecting conservation goals. The estimation of the maritime traffic indicator proposed in this study may be an easy and more complete tool for future studies evaluating the impact of naval activities on environmental quality.

scholarly journals Development of training method for vessel traffic service based on cognitive process

2021 ◽  
Author(s):  
Binbing Song ◽  
Hiroko Itoh ◽  
Yasumi Kawamura
Keyword(s):  
Cognitive Processes ◽  
Cognitive Process ◽  
Process Model ◽  
Situational Awareness ◽  
International Association ◽  
Tokyo Bay ◽  
Training Methods ◽  
Training Method ◽  
Oral Transmission ◽  
Maritime Traffic

AbstractVessel traffic service (VTS) is important to protect the safety of maritime traffic. Along with the expansion of monitoring area per VTS operator in Tokyo Bay, Japan, inexperienced operators must acquire the ability to quickly and accurately detect conditions that requires attention (CRAs) from a monitoring screen. In our previous study (Song B, Itoh H, Kawamura Y, Fukuto J (2018) Analysis of Cognitive Processes of Operators of Vessel Traffic Service. In: Proceedings of the 2018 International Association of Institutes of Navigation. IAIN 2018, pp 529–534, Song et al., J Jpn Inst Navig 140:48–54, 2019), we established a task analysis method based on the assumption that the cognitive process model consists of three stages: “situational awareness”, “situation judgment”, and “decision making”. A simulation experiment was conducted for VTS operators with different levels of ability and their cognitive processes were compared based on the observation of eye movements. The results showed that the inexperienced operators’ abilities to predict situation changes were lower. And it was considered that oral transmission of the knowledge is difficult, thus new training methods are needed to help the inexperienced operators to understand the prediction methods of experienced operators. In this study, based on the cognitive process of an experienced operator, we analyzed the prediction procedures of situation changes and developed an educational tool called vessel traffic routine (VTR). The training method learning VTR aims to quickly improve inexperienced VTS operators’ abilities to predict situation changes. A simulation verification experiment of the VTR effect was conducted for four inexperienced operators, who were divided into two groups with and without prior explanation of VTR. By evaluating the cognitive processes of inexperienced operators, it was confirmed that those given prior explanations of VTR were better at detecting CRAs.

scholarly journals The mining industry in Canada north of the 55th parallel: a maritime traffic generator?

2015 ◽  
Vol 38 (2) ◽  
pp. 107-122 ◽  
Author(s):  
Pierre-Louis Têtu ◽  
Jean-François Pelletier ◽  
Frédéric Lasserre
Keyword(s):  
Mining Industry ◽  
Maritime Traffic ◽  
Traffic Generator

Current Canadian Coast Guard operations in ice

Polar Record ◽  
1964 ◽  
Vol 12 (77) ◽  
pp. 147-155 ◽  
Author(s):  
Gordon W. Stead
Keyword(s):  
Coast Guard ◽  
Scientific Support ◽  
Maritime Traffic ◽  
The Government ◽  
Government Of Canada

Maritime traffic in ice-congested waters in Canada moves under the control of the Canadian Coast Guard or with its close support, the annual sea supply of Arctic establishments is carried out mainly by merchant ships chartered for the purpose, escorted by icebreakers and assisted by shallow-draft Northern supply vessels and locally based landing barges. A rapidly growing commercial traffic into the Gulf of St Lawrence in winter is provided with routing advice or icebreaker escort on an organized basis worked out in consultation with the commercial interests. These and other related operations have developed in recent years with meteorological and other scientific support provided by various agencies of the Government of Canada.

The Contribution of Channels to the Definition of Straits Used For International Navigation

1998 ◽  
Vol 13 (1) ◽  
pp. 71-89
Author(s):  
Michael C. Stelakatos-Loverdos
Keyword(s):  
Secondary Importance ◽  
Coastal State ◽  
Maritime Traffic ◽  
Definition Of ◽  
International Character ◽  
High Seas

AbstractThe questions of what is "a strait used for international navigation", and the regime applicable in such waterways or even in "broad" straits, remain unsettled in the LOS Convention. However, channels of navigation may assist in determining the "geographical situation" of international straits. It is submitted, therefore, that, where there is only one coastal state bordering more than one strait connecting the same parts of the high seas or the EEZ, the claim of transit passage through straits of secondary importance may be abusive. Obviously, the non-application of transit passage on the grounds of abuse of rights is not able to modify the international character of such waterways, the regime of non-suspendable innocent passage being thus applicable. Moreover, modalities of passage evidenced by the existence of maritime traffic through channels of navigation may be useful when determining the "extent" of the regime of transit passage in the so-called "broad" straits.

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