Ship Manœuvring Characteristics

1973 ◽  
Vol 26 (1) ◽  
pp. 113-122
Author(s):  
J. A. H. Paffett

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.

1972 ◽  
Vol 25 (3) ◽  
pp. 402-404 ◽  
Author(s):  
J. A. H. Paffett

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.


2013 ◽  
Vol 310 ◽  
pp. 580-583
Author(s):  
Hao Ran Song

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.


2018 ◽  
Vol 1 (1) ◽  
pp. 68-74
Author(s):  
Sumiyati Sumiyati

The development of motor functions is one of the dimensions of early childhood development that is important to note among other development dimensions. This is a fundamental part of the child's need to develop muscle, brain, and nerves, which is one of the basic developments at a later stage. Therefore, this dimension needs to get appropriate stimulation in accordance with the stages of child development, so that stimulation is given with the right portion. One of the most effective ways to develop children motor skills is through their favorite activities, such as fun and play activities. This paper tries to explain one of the fun activity alternatives that could be used to optimize the motor physical ability of children aged 3-4 years, ie through, among others, throwing ball games. It is hoped that this paper is useful for early childhood education practitioners, as well as parents in developing ways to stimulate the development of motor skills of early childhood through fun activities.


Author(s):  
A U Schubert ◽  
◽  
R Damerius ◽  
G Finger ◽  
S Fischer ◽  
...  

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.


Modern Italy ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 295-315
Author(s):  
Massimiliano Agovino ◽  
Katia Marchesano ◽  
Antonio Garofalo

This article examines the Italian policy framework on the employment of disabled people. It discusses the strengths and limitations of Law 68 of 12 March 1999 (Regulation on the right to work of disabled people). Despite it having been enacted 16 years after being passed, Law 68/99 still faces problems in its implementation. The data analysis shows the propensity of firms to flout their obligations with regard to the recruitment of disabled people, preferring instead the risk of being sanctioned. In order for Law 68/99 to have a positive effect on the employment of disabled people, higher incentives (including subsidies for labour costs) must be introduced for employers, especially to enable the adaptation and adjustment of the workplace. With these inducements, firms would be encouraged to recruit disabled people and avoid penalties. In addition, disability management policies (still rarely implemented in the Italian workplace) and comprehensive training programmes can play a crucial role in overcoming discriminatory constraints regarding skills and physical ability, so as to increase the employability of disabled people in the labour market.


Author(s):  
J. Anthony VanDuzer

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.


2019 ◽  
Vol 42 ◽  
Author(s):  
Guido Gainotti

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.


Author(s):  
J. Taft∅

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.


Author(s):  
Russell L. Steere ◽  
Michael Moseley

A redesigned specimen holder and cap have made possible the freeze-etching of both fracture surfaces of a frozen fractured specimen. In principal, the procedure involves freezing a specimen between two specimen holders (as shown in A, Fig. 1, and the left side of Fig. 2). The aluminum specimen holders and brass cap are constructed so that the upper specimen holder can be forced loose, turned over, and pressed down firmly against the specimen stage to a position represented by B, Fig. 1, and the right side of Fig. 2.


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