Planning the safe transit of a ship through a mapped minefield

Bekker, JF; Schmid, JP

doi:10.5784/22-1-30

Cited by 22 publications

(28 citation statements)

References 6 publications

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“…Routing decisions of ships using advanced meteorological modeling and satellite data employing Dijkstra's algorithm [3] were investigated by Anel [12] and the US Navy Meteorology and Oceanography (METOC). Bekker and Schmid [13] investigated the use of Dijkstra's algorithm and a genetic algorithm to achieve practical strategies and a method in which the two optimization techniques interact to provide a safe route, considering the risk of both sea mines and the environment, making it applicable to sea mine avoidance.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimal ship tracking on a navigation route between two ports: a hydrodynamics approach

Panigrahi¹,

Padhy

Sen

et al. 2011

J Mar Sci Technol

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The optimal trajectory from Calcutta port to Mumbai port is charted for a tanker transshipping from the East coast to the West coast of India during rough weather. Rough weather is simulated over Indian seas using the state-of-the-art WAM numerical wave model (WAMDI Group in J Phys Oceanogr 18:1775-1810, 1988, assimilating satellite (IRS-P4) wind fields. These simulated wave fields and two-dimensional (2D) directional wave spectrum are an absolute representation of the irregular seaway. Hence, the same for the monsoon month of August 2000 formed the input basis for this study. Loss of ship speed due to the wave field (i.e., nonlinear motion of the tanker in waves) and associated sea-keeping characteristics in the seaway are estimated (Bhattacharya in Dynamics of marine vehicles, Wiley, New York, 1978). The approach adopted in this paper is unique in that it takes into account both voluntary and involuntary speed reductions of the ship. It helps in ship tracking by the optimum route using inverse velocity as the weight function for the path in an efficient way. Dijkstra's algorithm [Numer Math 1(3):269-271, 1959] is applied in an iterative manner for determining the optimum track. The optimum track information has broad scope for use in modern shipping industry for obtaining safe and least-time routing by avoiding schedule delays with economic fuel consumption.

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Section: Literature Reviewmentioning

confidence: 99%

Optimal ship tracking on a navigation route between two ports: a hydrodynamics approach

Panigrahi¹,

Padhy

Sen

et al. 2011

J Mar Sci Technol

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show abstract

“…Routing decisions of ships using advanced wave modelling and satellite data employing Dijkstra's algorithm by the United States Navy, Meteorology and Oceanography Command (METOC) were investigated by Anel (2005). Bekker and Schmid (2006) investigated the use of Dijkstra's algorithm and a genetic algorithm to achieve practical strategies and a method in which the two optimization techniques interact to provide a safe route considering the risk of both the sea mine and the environment and making it applicable to sea mine avoidance. In this study an attempt has been made to determine the optimum route for a tanker.…”

Section: Ship Routingmentioning

confidence: 99%

Application of Oceansat-1 MSMR analysed winds to marine navigation

Panigrahi¹,

Misra

Umesh

2010

International Journal of Remote Sensing

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“…It is especially necessary to search for a shortest time route in an emergency, such as seeking a refuge or a rescue at sea (Zhang et al 2008a). At the same time, a voyage can be shortened to gain a valuable opportunity for combat if the shortest time route can be acquired automatically and promptly when faced with the complicated military navigational conditions in a sea area (Bekker and Schmid 2006;Montes 2005;Wang 2004). …”

Section: Introductionmentioning

confidence: 98%

Determination of the Shortest Time Route Based on the Composite Influence of Multidynamic Elements

Zhang

Peng

et al. 2011

Marine Geodesy

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An optimally planned route is the foundation of a safe and economical navigation. This article proposes a method for the shortest time routing based on the composite influence of multidynamic elements. First, an instantaneous model is constructed based on static depths from a chart and a grid tidal model in a sea area, then a collection of obstacle areas are acquired and the navigability of a route is analyzed. Second, a search is made for the shortest time path using a dynamic programming method. Finally, the path is further optimized by strategies that involve excluding obstacle areas outside the rectangular box of all computation nodes, searching close nodes in the next stage and deleting redundant nodes for a more direct navigable route. Experimental results demonstrate that: (1) the proposed method can analyze the navigability of the route dynamically and acquire the shortest time route; (2) the route acquired by the proposed method has a shorter time than those of traditional method based on static depths; and (3) the shortest route depends on the departure time and the ship's speed.

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Planning the safe transit of a ship through a mapped minefield

Cited by 22 publications

References 6 publications

Optimal ship tracking on a navigation route between two ports: a hydrodynamics approach

Optimal ship tracking on a navigation route between two ports: a hydrodynamics approach

Application of Oceansat-1 MSMR analysed winds to marine navigation

Determination of the Shortest Time Route Based on the Composite Influence of Multidynamic Elements

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