Fishing vessel stability assessment system (original) (raw)

A stability monitoring and advisory system for small ships

1994

Considering the loss of lives and money as a result of marine accidents, the importance of reducing or preventing capsizing of small boats is clearly evident. The research described in this thesis addresses the development of a monitoring and advisory system for the safety of fishing vessels. This system uses environmental information obtained from a number of sensors and proposes corrective action based on a rule-base derived from experiments, theoretical research and human expertise. Improvements in computer technology and the low prices of measurement equipment facilitates the integration of a system based on off-the-shelf devices and subsystems such as a ship's radar system to measure wave properties.The thesis demonstrates that such off-the-shelf devices and subsystems can be used with special purpose software developed to produce a low cost, intelligent safety monitoring and advisory system. This monitoring system is designed based on the following requirements : • The sys...

Development of an onboard decision support system for ship navigation under rough weather conditions

Sustainable Maritime Transportation and Exploitation of Sea Resources, 2011

The paper describes the development of an onboard decision support system to support ship operation, in particular on decisions about ship handling in waves, which will contribute to vessel safety. The prototype system monitors several motion related parameters, and, by processing these data, provides the ship master with the information about the consequences of the different ship handling decisions. The paper describes the decision criteria and the approaches adopted for the calculation of the parameters that govern the master's decisions. It describes the software that was developed to perform those calculations and to display in a user interface the advice to the master as well as the data acquisition and processing hardware that has been organized for the on board monitoring of motions and strains in the structure.

Monitoring System for Evaluation of Operator Functional Status on Sea Ships

TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, 2016

This paper introduces the basic concept of a new developed web-based databank for an assessment of seafarers' functional status during the sea missions. The Web system is based on client-server architecture and the international open source technologies including Apache web server, PHP scripts and MySQL database. The paper focuses on the aspects and first results of the initial practical realization of the web-based databank. The main operational advantage of the developed system is the capability to on-line handle up to a dozen users at the same time. The system includes administrative data and questionnaires.

An expert system for monitoring dynamic stability of small craft

… , IEEE Journal of, 1995

This paper describes an intelligent modtoring and advisory system for vessel safety. This system uses environmental information obtained from a number of sensors and proposes corrective action based on a rule-base derived from human expertise, experiments, and theoretical research. The architecture of the monitoring and advisory system is described. Capsizing modes of a ship at sea are explained, and the Fuzzy Expert system used in the decision-making process is detailed. Simulations of various sea conditions leading to capsize are presented, and the vessel response to the corrective action suggested by the advisory system is illustrated.

On the alternative approaches to stability analysis in decision support for damaged passenger ships

WMU Journal of Maritime Affairs

A decision support system with damage stability analysis has been recognized as an important tool for passenger ships. Various software applications have been developed and taken into use over the years, without a direct link to any compelling requirement, set forth in the international regulatory framework. After the Costa Concordia accident, new regulations have been established, setting minimum requirements for a decision support system, as an extension to a loading computer. Yet, more advanced systems have been developed recently, aiming at providing valuable additional information on the predicted development of the stability of the damaged ship. This paper presents these alternative decision support systems with damage stability analysis methods for flooding emergencies on passenger ships. The technical background, usability, and usefulness of the various approaches are compared and discussed, taking into account the important statutory approval point of view. In addition, pra...

Computer-based support for the evaluation of ship handling exercise results

WMU Journal of Maritime Affairs, 2006

One of the most important parts of the simulator exercise is the evaluation of the students' results by the instructor both during and after the training session. This should be performed in two ways: first, during the exercise run to ensure that the training objective can be achieved and second after exercise completion in order to give the students an indication of their performance during the simulation run. For these purposes software tools have been created and implemented at the Maritime Simulation Centre in Warnemünde: the "Surveillance Tool", allows for a monitoring during the run and the "Evaluation Tool" will enable a detailed evaluation by the instructor after the run. It allows for in-depth search within the replay data and at the same time facilitates the calculation of the final score for the student's performance based on measurement factors as penalties for exceeding quality limits. Within this paper a brief overview of the principles of these methods is high-lighted and selected examples of applications are described.

Computer-based systems on ships and offshore vessels: The Software Problem ++

This report deals with the imprecise term denoted ‘software problems’ for control and monitoring systems onboard ships and offshore vessels. It has, however, turned out that many problems identified are not purely related to the software, but are related to design, fabrication, operation, and maintenance of the systems. Due to this fact we have denoted all these related problems as the ‘Software Problem ++’. In order to understand why software problems occur, this report gives a brief description of the main drivers for technology progress, leading to an increasing integration complexity and number of I/O for industrial control and monitoring systems for offshore vessels. Moreover, state of practice for quality assurance (QA) is briefly treated in order to evaluate the effectiveness of present QA procedures for capturing the described problems. Examples in the report are taken from incidents related to failures in computer-based systems onboard DP vessels. The main focus has therefo...

Stability of Fishing Vessels in Waves and Wind

Instituto Superior Tecnico, Universidade Tecnica de Lisboa. Dissertation for the Degree of Master of Science in Naval Archtecture and Marine Engineering, June 2010, 2010

This work has been performed within the project "SADEP-Decision support system for the safety of fishing vessels subjected to waves", which was financed by the Foundation for Science and Technology ("Fundação para a Ciência e a Tecnologia"), from the Portuguese Ministry of Science and Technology, under contract PTDC/EME-MFE/75233/2006. However, this thesis and the published papers have been done because the opportunity, confidence, orientation and special support of the Professor: Carlos Guedes Soares.

Integrated Ship Control System

This report provides the results of the activities aiming at the definition and analysis of user needs to be taken into consideration in the definition and design of a Ship Integrated Decision Support System (SHIDESS) to support on-board and ashore users in their activities aiming to the enhancement of ship and environmental safety and reduction of operational costs. It also includes, as part of the methodology used for definition of user needs, the assessment of existing systems and RTD projects and the analysis of specific aspects, namely ergonomy, standardisation, integration, legal and pre-normative aspects.