Wyniki wyszukiwania - BazTech

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Ice Management – From the Concept to Realization

Frolov Y., Mironov V., Zubakin G., Gudoshnikov Y., Yulin A., Smirnov V. F., Buzin I.V.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2012

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Vol. 6, no. 2

215--220

EN

In the present time in the Russian Arctic and freezing seas there's the growth of industrial activ-ity. In addition to the traditional navigation in the ice-infested waters the development of the new offshore hydrocarbon deposits is planned. New production and uploading platforms and high-tonnage tankers appear in the Arctic. Widening of the sea activities in the Arctic, the implementation of comprehensive technical pro-jects and the need to ensure their safety made it necessary to develop and introduce principally new infor-mation and logistics system - a system aimed at “managing ice conditions” or the so-called “Ice Manage-ment” (IM). The vast experience of the informational support of the ice navigation is accumulated in Russia, many components of the IM are developed and implemented in the active practice. The paper presents the summary of such experience. The concept of development the IM on the Shtokman Gas Condensate Field is discussed.

2

Advanced Navigation Route Optimization for an Oceangoing Vessel

Kobayashi E., Asajima T., Sueyoshi N.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2011

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Vol. 5, no. 3

377--383

EN

A new weather routing method is proposed that accounts for ship maneuvering motions, ocean currents, wind, and waves through a time domain computer simulation. The maneuvering motions are solved by differential equations of motion for every moment throughout the voyage. Moreover, the navigation route, expressed in terms of a Bézier curve, is optimized for minimum fuel consumption by the Powell method. Alt-hough the optimized route is longer than the great circle route, simulation results confirm a significant reduc-tion in fuel consumption. This method is widely applicable to finding optimal navigation routes in other areas.

3

Measurement System for Wind and Waves Characteristics Registration on the Silm Lake

Morawski L., Pomirski J., Sikora P., Sokol R.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2010

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Vol. 4, no. 2

205--207

EN

This paper describes the system for registration of waves and wind disturbance. Ultrasonic an-emometer measures wind parameters. Capacitor sensor is used for measurement of wave height. The wave sensor changes its capacitance according to the immersion of the sensor in water. The measurement system is controlled by the microprocessor system, which collects data from the sensors and retransmit them to the computer via radio modem. The system is used for design and simulation of control systems for isomorphic ship models on the Silm Lake near Ilawa, Poland.

4

Low Sea Level Occurrence of the Southern Baltic Sea Coast

Stanisławczyk I., Kowalska B., Mykita M.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2010

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Vol. 4, no. 2

199--204

PL

The level of 440 cm is defined as the upper limit of low sea level. This value is also accepted as the warning level for navigation, according to the NAVTEX. The low sea levels along the southern Baltic Sea coast were analyzed in the years 1955 – 2005. Lowest values recorded ranged from 309 cm in Wismar to 370 cm in Kołobrzeg. The phenomenon was chiefly generated by hurricane like offshore winds. Extremely low levels were not frequent, their occurrence did not exceed more than 0,3% in Świnoujście and not more than 1% in Warnemünde. In summer months these phenomena occurred extremely seldom, they were more fre-quent in the western, than in the eastern part of the coast. Long-term variation and statistical analysis was pre-sented. Probability of low sea levels occurrence was calculated by Gumbel method and percentile distribution for 4 gauge stations was analyzed. The calculations revealed that, for instance, in Warnemünde once in 20 years the minimum sea level can be as low as 358 cm.

5

Sea Ice Services in the Baltic Sea

Sztobryn M.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2009

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Vol. 3, no. 4

415--420

EN

The Baltic winter navigation depended always very much on the ice conditions in the sea. The sea ice occurs different in form and amount, depending on the sea area and the winter season. As the maritime traffic on the Baltic Sea constitutes a substantial amount in the whole of the Baltic countries transport, Sea Ice Services (SISs) have come into being. They constituted the Baltic Sea Ice Meeting (BSIM) – a body, which assembles the parties, which are interested in warnings against bad ice conditions, and in protection of navigation in ice in the Baltic Sea. An indispensable co-operator to this body was always the company “Baltic Icebreakers”. To-day within the BSIM operate by the SISs of Denmark, Sweden, Finland, Russia, Estonia, Latvia, Lithuania, Poland and Germany, Netherlands, Norway and the Baltic Icebreakers. The main statutory duties of the SISs is the acquisition, processing and dissemination of actual information on sea ice conditions and on obstructions to navigation due to sea ice. This is done by maintaining observing posts along the coast of those countries, in their ports and approaches to them, by gathering information from ships, from ice beakers, if possible – from reconnaissance flights or satellite images. Routine products of SISs are the ice reports, ice bulletins, ice charts, forecasts and warnings and other information broadcast by mass media, e.g. radio, internet, Navtex and on the national and Baltic SISs’ web sites etc.

6

Ice Conditions and Human Factors in Marine Accidents at the Arctic

Marchenko N.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2009

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Vol. 3, no. 4

409--414

EN

All activities in the Arctic are conducted near the limit of technological opportunities and human abilities. But the drain of resources in the areas convenient for development obliges us to look at this severe polar region. The main objectives of the PetroArctic project (offshore and coastal technology for petroleum production and transport from arctic water) as a part of PETROMAX and MarSafe project (Marine Safety Management) are to obtain and provide information for safety of Arctic operation such as hydrocarbons production and transport from Polar seas. One of the tasks is a collection of ice pilot experiences from the people involved in the Arctic activities to learn how they felt in these conditions, how they solved difficult tasks and managed the ice. Items of special interest are connected to lost vessels and other marine accidents. Appreciable amount of written documentation and interviews have been processed and organized into a data base of marine accidents in Russian Arctic since 1900. It includes a set of maps where the locations of the accidents are shown with a description of the accidents (date, geographical environment, vessel type, what happened and how the people acted, etc). This paper includes the map for Kara Sea and descriptions of several accidents in the eastern part of Arctic as example of different situations, as well as the principles of the data base construction and accidents classification.