This paper is aimed to clarify the notion of instant pivot point (as being well established in rigid body mechanics) and review its application in practical ship manoeuvring. The extension of the Vasco Costa original results to arbitrary initial ship manoeuvring motions is performed and a transient phase of the pivot point change is studied, especially with regard to ship crash stopping and turning (including inter alia a bow thruster application)

The brand new technologies more frequently revolutionize the conservative fields of the navigation, such as ECDIS for instance. The term of “E-Navigation” in the different forms is omnipresent in the major parts of navigation, tried to substitute old-fashion technologies. The pilotage service is one of them, remains immutable in its novelty and stays conservative from many years. The author focused on the technical aspects of the system named Remote Pilotage System, as an aid to the in-shore and sea piloting methods. The content of this article is focused on the analysis of methods for the voice-way information communication to the navigator and the different interface figuration for the pilot. The described researches are the part of holistic method of navigational information communication analysis for the Remote Pilotage System Interface

The paper presents method of safety water depth evaluation for ship approaching to ports. The method utilizes two models: real time simulation model used for determination of ships speed approaching to given port, and Monte Carlo model for determination of probability of accidental collision with the bottom. Minimal safety depth has been calculated with use of probabilistic acceptance criteria presented in the paper

In the following article the methods for establishing parametres of safe manoeuvring area are presented. The methods are constructed on the basis of deterministic and probabilistic models of ships’ manoeuvring in restricted areas. The reliance level has been established for these methods in which deterministic and probabilistic model of under keel clearance has been use

Navigational systems employed at LNG terminals assist the navigation of gas carriers along approach chan-nels and in port waters leading to LNG terminals. i.e. in restricted waters. The navigation in restricted waters is often referred to as pilot navigation. The term is derived from the fact, that a pilot assists in navigating through restricted areas, and the process of marine navigation the pilot participates is called pilotage

There are different scales related to time actually two the most important timescales are the TAI (Time Atomic International) and the UTC (Universal Time Coordinated). In addition to these times Satellite Navigation Systems (SNS) have developed their own system time: GPS Time (GPST), the GLONASS System Time (GLONASSST) and the Galileo System Time (GST). The sources, the generation and the relation between all these times and timescales are described in this paper. Additionally the time dilution of precision (TDOP) coefficient and the data concerning the time transmitted in navigation messages by satellites of different SNS will be presente

Simulators are useful in very wide field of current life. Very important is to know their advantages and disadvantages. One of the most important of navigational simulator using is deck officers training. Possibilities of using real collision situations for officers training can seriously improve knowledge about deck officers behavior in dangerous situations. Analysis of the possibility of using the NMS-90 simulator for ship’s collision reconstruction was the aim of experiment. Some problems of recorded data accuracy and simulator possibilities influence on accident reconstruction process are described in this paper

In convolution method of the determination of vessel traffic stream parameters, it is indispensable to know the distribution of braking time. In this paper, on base of simulations trials, the fitting the type of the probability distribution to data of vessel braking times has been done. To achieve this goal the chi square Pearson test has been use

The paper presents the researches of manoeuvring model of the ferry m/f “Polonia” at the Ystad harbour. Manoeuvring decisions recognition system based on probabilistic model by using the Bayesian belief networks has been proposed. Suggested variables necessary for defined nodes of network, methods of converting into discrete variables have also been presented. Finally there are some conclusions and suggestions concerning constructed model

This article analyzes the problem of opposite flow that may occur during the evacuation of people from passenger ships. The causes of evacuation opposite flow and methods of its investigation are given. Besides, the methods of taking account of opposite flow in evacuation models are analyzed. It is proposed to search for the critical value of density depending on the number of persons moving in the opposite direction

The method of high accuracy for dynamically tuned gyroscope is presented. The mathematical description and calculation of the gyroscope‟s parameters which have coefficient of integrating 6.9 are described. The characteristics of the resonance depending of generalized parameter and influence of balance variation on accuracy were analyzed. The result of experiment is according to theory at condition of experiment in vacuum chamber

The paper presents investigations concerning the implementation of a prediction system based on hydrodynamic model, capable to find parameters of the simplified hydrodynamic Nomoto model (1st – order). Optimization of Nomoto model parameters is based on extrapolation of the position, using genetic algorithm and Newton's metho

This article compares routes of a ship avoiding a tropical cyclone calculated by various methods. The calculations were done in the environment of evolutionary algorithms based on systematically received forecasts. The computational algorithms made use of the 1-2-3 rule, anti-collision plot, and the storm field defined as the cyclone fuzzy domain. The results have been compared with post factum analysis utilizing exclusively the full scope of weather analyses for the relevant moments of the voyage

The first part of the article presents the quality analysis following the most popular world standards used for the description of terrain / sea bottom shape: DTED – Digital Terrain Elevation Data, used by NATO, SRTM model – Shuttle Radar Topography Mission, worked out within the confines of the international mission of the space shuttle Endeavour, DBDB-V – Digital Bathymetric Data Base – Variable Resolution, used for the description of sea and ocean bottoms, NMB – Network Model Bathymetry, as one of the AML – Additional Military Layers for WECDIS – Warship Electronic Chart Display and Information Systems has been shown. The distortion distribution of projected areas shape in a matrix model based on ellipsoidal trapezoids and proposal of new model based on ellipsoidal squares have been presented in the main and final section of the article

Container traffic grew very fast and many ports have prepared infrastructure and superstructure for the container vessels. During the last decade, many of Eastern Baltic ports container terminals started working with container vessels and in the same time looked for the bigger container vessels with limited possible investments [1]. In many ports are very limit space inside the ports and it make additional difficulties increase entry to the ports ships size. Container terminals usually are located in the middle or in the end parts of the ports and find enough space for the ships turning basins raise difficulties. Big container vessels navigational safety must be linked with ports infrastructure, but very often ports are orientated on the old standards and design recommendations, so are trying to keep big safety coefficients regarding water ways depths, widths, and hydrometeorological conditions limitations. Old standards did not include new accuracy navigational equipment such as RTK systems, which are implemented in many ports and increase navigational possibilities and navigational safety. This paper addresses the theoretical approach of the influence of new big container vessels sailing within ports areas, namely ships turning basins, possibilities and navigational safety of the ships, which have big wind surface and good manoeuvrability