Fuel Consumption in Container Ships on the North Atlantic

1985 ◽  
Vol 38 (02) ◽  
pp. 258-265
Author(s):  
R. Motte ◽  
C. A. Laurence
Keyword(s):  
Fuel Consumption ◽  
North Atlantic ◽  
Engine Performance ◽  
Economic Approach ◽  
Operation System ◽  
Performance Variables ◽  
The North ◽  
The Subject ◽  
Main Engine

Commercial interests now demand a close awareness of fuel consumption, which is one of the major costs in vessel operation. This paper outlines one shipping operator's attempts to monitor and improve economic performance as indicated by fuel consumption alone. The authors are well aware that some aspects of operation, such as main engine performance variables, are closely and easily monitored whilst others such as environmental effects are not. They have therefore adopted a ‘macro-economic’ approach to the analysis and advice on Fleet operation in this instance, attempting to monitor the vessel operation system as a whole. Thus fuel consumption is used as a yardstick and it is this particular variable which is the subject of management focus. Although many of the inputs to the complete economic equation are necessarily unquantifiable in precise terms, it is considered that a valid determination of performance is attainable from a scientifically based overview.

scholarly journals Saharan dust infrared optical depth and altitude retrieved from AIRS: a focus over North Atlantic – comparison to MODIS and CALIPSO

2010 ◽  
Vol 10 (4) ◽  
pp. 1953-1967 ◽  
Author(s):  
S. Peyridieu ◽  
A. Chédin ◽  
D. Tanré ◽  
V. Capelle ◽  
C. Pierangelo ◽  
...  
Keyword(s):  
Optical Depth ◽  
North Atlantic ◽  
Western Indian Ocean ◽  
Saharan Dust ◽  
Orthogonal Polarization ◽  
Dust Layer ◽  
The North ◽  
Moderate Resolution Imaging Spectroradiometer ◽  
Good Agreement

Abstract. Monthly mean infrared (10 μm) dust layer aerosol optical depth (AOD) and mean altitude are simultaneously retrieved over the tropics (30° S–30° N) from almost seven years of Atmospheric Infrared Sounder (AIRS) observations covering the period January 2003 to September 2009. The method developed relies on the construction of look-up-tables computed for a large selection of atmospheric situations and follows two main steps: first, determination of the observed atmospheric thermodynamic situation and, second, determination of the dust properties. A very good agreement is found between AIRS-retrieved AODs and visible optical depths from the Moderate resolution Imaging Spectroradiometer (MODIS/Aqua) during the main (summer) dust season, in particular for three regions of the tropical North Atlantic and one region of the north-western Indian Ocean. Outside this season, differences are mostly due to the sensitivity of MODIS to aerosol species other than dust and to the more specific sensitivity of AIRS to the dust coarse mode. AIRS-retrieved dust layer mean altitudes are compared to the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP/CALIPSO) aerosol mean layer altitude for the period June 2006 to June 2009. Results for a region of the north tropical Atlantic downwind of the Sahara show a good agreement between the two products (σ≈360 m). Differences observed in the peak-to-trough seasonal amplitude, smaller from AIRS, are principally attributed to the large difference in spatial sampling of the two instruments. They also come from the intrinsic limit in sensitivity of the passive infrared sounders for low altitudes. These results demonstrate the capability of high resolution infrared sounders to measure not only dust aerosol AOD but also the mean dust layer altitude.

scholarly journals DESIGN OF MAIN BREAKWATER AT SINES HARBOUR

1976 ◽  
Vol 1 (15) ◽  
pp. 143 ◽  
Author(s):  
John Dorrington Mettam
Keyword(s):  
North Atlantic ◽  
Government Agency ◽  
Irregular Waves ◽  
Regular Waves ◽  
The West ◽  
The North ◽  
Flume Tests ◽  
Wide Range ◽  
The Subject ◽  
Engineering Conference

In March 1972 the author's firm in association with two Portuguese firms of consulting engineers, Consulmar and Lusotecna, were appointed by the Portuguese Government agency Gabinete da Area de Sines to prepare designs for the construction of a new harbour at Sines on the west coast of Portugal. The location is shown in Figure 1. The main breakwater, which is the subject of this paper, is probably the largest breakwater yet built, being 2 km long and in depths of water of up to 50 m. It is exposed to the North Atlantic and has been designed for a significant wave height of 11 m. Dolos units invented by Merrifield (ref. 1) form the main armour. The project programme required that studies be first made of a wide range of alternative layouts for the harbour. After the client had decided on the layout to be adopted, documents were to be prepared to enable tenders for construction to be invited in January 1973. This allowed little time for the design to be developed and only one series of flume tests, using regular waves, was completed during this period. Further tests in the regular flume were completed during the tender period and a thorough programme of testing with irregular waves was commenced later in the year, continuing until August 1974 when the root of the breakwater was complete and the construction of the main cross-section was about to start. The model tests, which were carried out at the Laboratorio Nacional de Engenharia Civil in Lisbon, were reported by Morals in a paper presented to the 14th International Coastal Engineering Conference in 1974. (ref. 2)

scholarly journals Pictures in the Soviet Northern discourse of the 30s (based on the materials of the newspaper «Khanty-Mansi Shop (Shoy) / Ostyako-Vogulskaya Pravda»)

2021 ◽  
Vol 11 (3) ◽  
pp. 584-597
Author(s):  
А. G. Kiselev ◽  
◽  
S. V Onina ◽  
Keyword(s):  
Visual Arts ◽  
The North ◽  
Academic History ◽  
Visual Approach ◽  
History Of ◽  
The Subject ◽  
History Of Journalism ◽  
Visual Range

Introduction: a notable phenomenon of modern historiography is the visual turn, which presupposes the study of history as the history of images. The subject of the research is the images published in the newspaper «Khanty-Mansi Shop (Shoy). Ostyako-Vogulskaya Pravda» in 1931–1939. Objective: presentation of the ethno-cultural segment of the visual range of the newspaper and on this basis the determination of its communicative capabilities in relations with the viewer-reader from among the indigenous peoples of the North. Research materials: newspaper images, works of theorists and practitioners of the photo department, party documents of the pre-war period. Results and novelty of the research: the classification of ethno-images is given; the connection between the dynamics of their publication and the socio-political trends in the country’s development has been clarified. As a common feature of ethno-images, their conventionality and simplicity are shown, which correlates with the peculiarities of the «northern style» in the visual arts of the Ob Ugrians. The weakness of the visual range is shown, which hindered the transformation of the newspaper into a mass, nationally oriented publication. The scientific novelty is determined both by the visual approach itself, and by the introduction into scientific circulation of a complex of images of the Ostyako-Vogul newspaper; observations and conclusions can be used in the preparation of the corresponding section of the academic history of Yugra, as well as special courses on the history of journalism.

Barometrical observations, showing the effect of the direction of the wind on the difference between distant barometers

1843 ◽  
Vol 4 ◽  
pp. 386-387
Keyword(s):  
Atmospheric Pressure ◽  
The North ◽  
Heating And Cooling ◽  
Westerly Winds ◽  
Different Seasons ◽  
The Subject ◽  
The Difference ◽  
The Times ◽  
The One

The author institutes a comparison between the barometric heights as observed at the Apartments of the Royal Society, and at his house in Herefordshire, in the neighbourhood of Ross, with a view to ascertain the influence of prevailing winds on the atmospheric pressure. The barometers thus compared together were of the same construction, and by the same maker; and the times of observation, namely nine o’clock a. m. and three o’clock p. m., were the same at both places, the distance between which is 110 miles in longitude, and about 20 in latitude. The degree of accordance in the march of the two barometers is exhibited by that of curves traced on three sheets accompanying the paper. The results are given in eight tables. The author agrees with Schubler in ascribing the currents prevailing in the atmosphere to the variable relations of heating and cooling which obtains between the Atlantic Ocean and the continent of Europe at different seasons; the facts ascertained by the series of observations here presented being in accordance with that hypothesis. If the northerly and westerly winds in England be partly the effect of the expansion of the air on the continent, then the barometer which is nearest to the continent, or in this instance that at London, ought to be relatively more depressed than the one more distant; or if the southerly and easterly winds be regarded as proceeding to the ocean, then, for a similar reason, the barometer nearest to the ocean ought to be relatively depressed; and that both these effects are produced, is shown by the tables. This view of the subject also, the author remarks, is corroborated by Raymond’s observations, detailed in his memoir on the determination of the height of Clermont Ferrand, from which it appears that with the north winds, the southern barometer was most depressed; while the reverse occurred with the southerly winds.

North Atlantic Treaty Organization

1956 ◽  
Vol 10 (3) ◽  
pp. 503-507
Keyword(s):  
North Atlantic ◽  
North Atlantic Treaty Organization ◽  
News Report ◽  
French Government ◽  
The North ◽  
The Common ◽  
The North Atlantic

The permanent representatives of the Council of the North Atlantic Treaty Organization (NATO) met on March 27, 1956 in Paris, to consider the Algerian situation; the Council announced that it had been kept constantly informed of the with drawals by France of forces assigned by that country to NATO defense in Europe, and had examined the situation in Europe arising from these troop movements. After noting that France had found it necessary, in the interests of its own security, to reinforce the French forces in Algeria, which was part of the North Atlantic Treaty area, the Council stated that it recognized the importance to NATO of security in this area. After expressing hope for an early and lasting settlement, the Council noted the determination of the French government to restore, as soon as possible, its full contribution towards the common defense in Europe. According to a later news report, General Gruenther (Supreme Allied Commander Europe) declared that it might become necessary to seek other forces to replace those which France had transferred to Algeria; he felt that a re-evaluation of the allied position in Europe in the light of the Algerian situation might be started about the end of 1956 if the Algerian situation had not been stabilized by that time.

Shifting International Security Norms

2017 ◽  
Vol 31 (2) ◽  
pp. 235-246
Author(s):  
Denise Garcia
Keyword(s):  
European Union ◽  
North Atlantic ◽  
International Security ◽  
The European Union ◽  
Coup D'etat ◽  
The North ◽  
The World ◽  
The Subject ◽  
Global Norms

The world is going through a crisis of the international liberal order, exemplified by a host of recent shocks: the invasion and annexation of Crimea by Russia; the transnational dimensions of conflicts such as in Syria; the United Kingdom's decision to exit the European Union; the attempted coup d’état in Turkey and its reversal toward autocracy; and the election and rise of non-universalist and illiberal governments as well as politicians who operate under the populist rubric in countries that are viewed as beacons of democracy and stability. These shocks have catalyzed two outcomes. First, the prevailing global norms that serve as the custodians of peace and security have been the subject of revived debate. Second, and relatedly, these shocks have prompted deep reflection on the role of institutions such as the European Union and the North Atlantic Treaty Organization (NATO), as well as the roles of the supposedly democratic members within those institutions.

scholarly journals International perceptions of an integrated, multi-sectoral, ecosystem approach to management

2016 ◽  
Vol 74 (1) ◽  
pp. 414-420 ◽  
Author(s):  
Anthony R. Marshak ◽  
Jason S. Link ◽  
Rebecca Shuford ◽  
Mark E. Monaco ◽  
Ellen Johannesen ◽  
...  
Keyword(s):  
North Atlantic ◽  
Online Survey ◽  
Ecosystem Approach ◽  
Atlantic Region ◽  
The Past ◽  
The North ◽  
Fisheries Conservation ◽  
Key Issues ◽  
The Subject ◽  
Legal Frameworks

Abstract The Ecosystem Approach to Management (EAM) has emerged over the past decades, largely to promote biodiversity conservation, and more recently sectoral tradeoffs in the management of marine ecosystems. To ascertain the state of practice of EAM operationalization, a workshop was held, which included a pre-workshop online survey. The survey gauged international participants’ perspectives regarding capacity, knowledge, and application of EAM. When asked about the subject, most survey respondents had a general understanding of EAM, and provided a clear definition. Major perceived challenges to EAM objectives by those surveyed included limited knowledge, conflicting interests, insufficient communication, and limited organizational legal frameworks or governance structures. Of those directly involved in an ecosystem approach, the majority responded that processes were in place or developed for application of integrated knowledge toward assessing key issues within their respective sectors (i.e. fisheries, conservation, energy), and that capacity was generally high. Our results show that most respondents, irrespective of sector or geography, see value in considering an integrated, broader ecosystem approach as they manage their sector. Although many participants were from the North Atlantic region, our results suggest that much of the international community is converging toward continued understanding of broad-scale, integrated approaches to marine resource management.

The Interrelation of Cruise Fuel Consumption, Temperature and Track Selection in Supersonic Transport Operations

1965 ◽  
Vol 18 (2) ◽  
pp. 123-140 ◽  
Author(s):  
S. M. Serebreny
Keyword(s):  
New York ◽  
Fuel Consumption ◽  
North Atlantic ◽  
Great Circle ◽  
Seasonal Distribution ◽  
Temperature Variations ◽  
Supersonic Transport ◽  
The North ◽  
Data Requirements ◽  
Data Period

This paper, which was presented at an Ordinary Meeting of the Institute held in London on 20 November, 1964, presents the results of a study on the interrelation of cruise fuel consumption, temperature and track selection in supersonic transport operations on the New York–London/Paris route. The range of temperature variations at S.S.T. altitudes over the North Atlantic for 26 months is illustrated and from this data period 24 cases are chosen to reflect extreme departures from standard and to give a seasonal distribution of such variation. The results of the application of a computerized nasa programme to these 24 cases to determine whether diversion from the great circle is warranted, in terms of economy of cruise fuel consumption due to existing temperature gradients over the area, are then discussed and illustrated.The results of a general solution, taking into account all these considerations, applied to an additional 117 cases are also discussed and illustrated. Finally the influence of climb fuel consumption upon cruise fuel consumption and data requirements for temperature forecasts in climb and cruise are discussed.

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