Ship Manœuvring Characteristics

1972 ◽  
Vol 25 (3) ◽  
pp. 402-404 ◽  
Author(s):  
J. A. H. Paffett
Keyword(s):  
Railway Wagon ◽  
Low Resistance ◽  
Ship Manoeuvring ◽  
Merchant Ship ◽  
The Right ◽  
Weight Force ◽  
Ship Handling

Successful ship handling depends upon acquiring the right information, making the right decisions and performing the right manœuvres; this paper concentrates upon the last of these. Manœuvring here is taken to include starting, stopping and steering. The ship is a vehicle with remarkably low resistance to motion; merchant ship drags commonly lie in the range one-hundredth to one-thousandth of the all-up weight force. This is comparable with that of a railway wagon (say 1/500 of its weight) and the low drag accounts in part for the ship's extreme economy as a carrying machine.

Ship Manœuvring Characteristics

1973 ◽  
Vol 26 (1) ◽  
pp. 113-122
Author(s):  
J. A. H. Paffett
Keyword(s):  
Physical Ability ◽  
Ship Manoeuvring ◽  
The Right ◽  
Ship Handling

Like any other vehicle a ship needs to be started, stopped and steered safely; the art of doing this is sometimes called ship handling. Successful ship handling depends upon three distinct operations: acquiring the right information, making the right decisions and performing the right manoeuvres. In this paper we assume that the Captain has all the facts and knows the right thing to do, and examine the physical ability of the ship as a mechanism to respond to his will.

Study on Application in the Teaching of Ship Maneuvering Simulator

2013 ◽  
Vol 310 ◽  
pp. 580-583
Author(s):  
Hao Ran Song
Keyword(s):  
Control System ◽  
Computer Technology ◽  
Simulation Training ◽  
Simulator Training ◽  
Shipping Industry ◽  
Ship Maneuvering ◽  
Ship Hydrodynamics ◽  
Ship Manoeuvring ◽  
And Training ◽  
Ship Handling

Ship handling Simulator system was dominated by computer technology, combined with disciplines such as ship hydrodynamics, to emulate a variety of sea and sea conditions, various types of ships and its control system, achieve the purpose of simulation training. At present, the ship manoeuvring Simulator in navigational teaching and training not only from the international shipping industry is generally acceptable, but also highly valued by the International Maritime Organization. Therefore, growing on ship manoeuvring Simulator in navigational teaching research on the application and training of the crew, ship maneuvering simulator training more rational, more realistic, more standardized.

Breeding Australian Illawarra Shorthorn cattle for resistance to Boophilus microplus. I. Factors affecting resistance

1978 ◽  
Vol 29 (2) ◽  
pp. 411 ◽  
Author(s):  
KBW Utech ◽  
GW Seifert ◽  
RH Wharton
Keyword(s):  
High Resistance ◽  
Bos Taurus ◽  
Boophilus Microplus ◽  
Factors Affecting ◽  
Low Resistance ◽  
Lactating Cows ◽  
Artificial Infestation ◽  
The Right ◽  
Almost All ◽  
Tick Resistance

Selection and breeding for tick resistance in an Australian Illawarra Shorthorn (AIS) herd was undertaken from 1966 to 1971. Mating of half the AIS herd with a Brahman bull in 1968–69 provided a comparison of tick resistance in selected Bos taurus and crossbred B. taurus x B. indicus cattle. Parent cows and their progeny were ranked for resistance to ticks, infestations of which were acquired as a result of grazing infested pastures, and from periodical artificial infestation with cohorts of c. 20,000 larvae of Boophilus microplus. Ranking and assessment of resistance levels were based on counts of semi-engorged female ticks on the right side. Parent cows selected for high resistance consistently carried fewer ticks than cows selected for low resistance. Mating of cattle selected for high resistance produced progeny that were significantly more resistant than the progeny of cattle selected for low resistance. However, the Brahman bull, which had slightly lower resistance than the AIS bull, produced progeny with higher resistance, even when mated with AIS COWS selected for low resistance. Pregnant cows were significantly less resistant than non-pregnant cows, and lactating cows were very much less resistant than non-lactating cows. Young cows were more resistant than older cows. Calves at foot carried fewer ticks than their dams when grazing infested pastures, but after weaning they were less resistant than their parents when resistance was determined from artificial infestations. Female calves carried fewer ticks than males on almost all occasions, but differences were not significant in winter. Significant seasonal changes in resistance were demonstrated in AIS and Brahman x AIS weaner and yearling cattle. All cattle were less resistant in winter. Changes were greatest in Brahman x AN females, on which the average numbers of female ticks that matured following artificial infestations in January 1970 (summer), July 1970 (winter) and January 1971 (summer) were 151, 1046 and 95 respectively.

Effects of low-dose alcohol exposure on simulated merchant ship handling power plant operation by maritime cadets

Addiction ◽  
2000 ◽  
Vol 95 (5) ◽  
pp. 719-726 ◽  
Author(s):  
Jonathan Howland ◽  
Damaris J. Rohsenow ◽  
Jennifer Cote ◽  
Michael Siegel ◽  
Thomas W. Mangione
Keyword(s):  
Power Plant ◽  
Low Dose ◽  
Alcohol Exposure ◽  
Plant Operation ◽  
Merchant Ship ◽  
Power Plant Operation ◽  
Ship Handling

scholarly journals Consumption Optimised Manoeuvring Method for Ship Automation

2020 ◽  
Author(s):  
A U Schubert ◽  
◽  
R Damerius ◽  
G Finger ◽  
S Fischer ◽  
...  
Keyword(s):  
Expert Knowledge ◽  
Motion Model ◽  
Optimal Plan ◽  
Ship Manoeuvring ◽  
Target Trajectory ◽  
Critical Areas ◽  
Framework Conditions ◽  
Fuel Consumption And Emissions ◽  
Operational Behaviour ◽  
Ship Handling

The paper presents a method for gradual automation of ship manoeuvring, focusing on ships already in service. The approach involves the expert knowledge of both nautical officers and ship engineers to optimise the operational behaviour and reduce fuel consumption and emissions. Detailed models of dynamic ship motion and engine processes form the basis of various software tools to assist the manual planning and execution of effective voyages. The results of a study in ship handling simulator show that the manual manoeuvring efficiency of experienced nautical officers has also been significantly increased by these assistance instruments. With regard to automatic shipping, the generated optimal plan is transferred to the automatic control system as a target trajectory. Based on a simplified motion model, the controller structure with feed-forward and feedback modules was developed to realise velocity, heading and track control. Results of controller application in simulator tests with and without wind disturbances are presented. In addition, the paper describes the development of necessary framework conditions for safety-critical areas for the application of automatically controlled manoeuvres in today’s practice with the so-called nautical algorithms according to the research project GALILEOnautic 2.

Virtual Vessel Framework for Merchant Ship Manoeuvring Operation

2021 ◽  
pp. 199-230
Author(s):  
Patrick Hooijmans ◽  
Martin Th. van Hees ◽  
Freek Verkerk
Keyword(s):  
Ship Manoeuvring ◽  
Merchant Ship

Investor-State Dispute Settlement under NAFTA Chapter 11: The Shape of Things to Come?

1998 ◽  
Vol 35 ◽  
pp. 263-290
Author(s):  
J. Anthony VanDuzer
Keyword(s):  
Free Trade Agreement ◽  
Dispute Settlement ◽  
Trade Agreement ◽  
Minimum Standards ◽  
The North ◽  
State Behaviour ◽  
Nafta Chapter 11 ◽  
To Come ◽  
The Right

SummaryRecently, there has been a proliferation of international agreements imposing minimum standards on states in respect of their treatment of foreign investors and allowing investors to initiate dispute settlement proceedings where a state violates these standards. Of greatest significance to Canada is Chapter 11 of the North American Free Trade Agreement, which provides both standards for state behaviour and the right to initiate binding arbitration. Since 1996, four cases have been brought under Chapter 11. This note describes the Chapter 11 process and suggests some of the issues that may arise as it is increasingly resorted to by investors.

What face familiarity feelings say about the lateralization of specific entities within the core system

2019 ◽  
Vol 42 ◽  
Author(s):  
Guido Gainotti
Keyword(s):  
Temporal Lobe ◽  
Memory System ◽  
Core System ◽  
The Core ◽  
Memory Traces ◽  
Specific Memory ◽  
Target Article ◽  
Temporal Structures ◽  
The Right

Abstract The target article carefully describes the memory system, centered on the temporal lobe that builds specific memory traces. It does not, however, mention the laterality effects that exist within this system. This commentary briefly surveys evidence showing that clear asymmetries exist within the temporal lobe structures subserving the core system and that the right temporal structures mainly underpin face familiarity feelings.

Study of charge transfer in FeTi

1983 ◽  
Vol 41 ◽  
pp. 296-297
Author(s):  
J. Taft∅
Keyword(s):  
Charge Transfer ◽  
Charge Distribution ◽  
Electron Scattering ◽  
Periodic System ◽  
Electron Distribution ◽  
Scattering Amplitude ◽  
Transition Elements ◽  
Hartree Fock ◽  
Cscl Structure ◽  
The Right

It is well known that for reflections corresponding to large interplanar spacings (i.e., sin θ/λ small), the electron scattering amplitude, f, is sensitive to the ionicity and to the charge distribution around the atoms. We have used this in order to obtain information about the charge distribution in FeTi, which is a candidate for storage of hydrogen. Our goal is to study the changes in electron distribution in the presence of hydrogen, and also the ionicity of hydrogen in metals, but so far our study has been limited to pure FeTi. FeTi has the CsCl structure and thus Fe and Ti scatter with a phase difference of π into the 100-ref lections. Because Fe (Z = 26) is higher in the periodic system than Ti (Z = 22), an immediate “guess” would be that Fe has a larger scattering amplitude than Ti. However, relativistic Hartree-Fock calculations show that the opposite is the case for the 100-reflection. An explanation for this may be sought in the stronger localization of the d-electrons of the first row transition elements when moving to the right in the periodic table. The tabulated difference between fTi (100) and ffe (100) is small, however, and based on the values of the scattering amplitude for isolated atoms, the kinematical intensity of the 100-reflection is only 5.10-4 of the intensity of the 200-reflection.

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