Parametric Analysis of Hydrodynamic Forces During Berthing Operations
Prediction of hydrodynamic forces induced during self-berthing is the most important problem in modelling ship - berth interactions. The paper presents the parametric analysis of these forces, performed using the results of open water model tests and proposed regression models. The study allowed to quantify the importance of examined parameters, necessary in the development of the completed model of interaction forces with aim of its further application in the simulation model of ship manoeuvring motions.
Elements of Port its Increasing Safety and Efficiency of Ship Manoeuvring Operations in Short Sea Shipping
The paper presents the existed solutions and proposition of the new elements of IT (Information Technology) applications in ports. The new decision support systems for the ship master, harbourmaster and port chief dispatcher related to ship entry into the harbour and berthing inside the docs are introduced. The systems based on the online hydro-meteorological and traffic information are proposed for the safe and efficient ferry operations.
The paper presents the vessel reliability while realizing transportation task in maritime transport. The approach based on predicted failure intensity in particular stages of ship operation is proposed.
The carried out and planned studies on the revitalisation of Odra and Vistula rivers in Poland and restoration of regular inland navigation put a great attention into environmental issues related to the operation of inland waterborne transport means. The design and operational parameters of inland ships and convoys are dependent on waterways dimensions and their influence on the environment. The article presents problems related to manoeuvring performance of the push train, which is the most popular inland waterborne means of freight transport in Poland and in Europe. The alternative auxiliary steering device improving push train manoeuvrability has been tested on the physical model of a push barge. The active bow steering device consisted two bow rotors has the influence on the operational safety of the push train with respect to improved manoeuvring characteristics and decreased impact on the environment, port and lock facilities, ships and boats in narrow passages. The results of model tests presented in the article allowed for estimation of turning ability of the push train with and without bow rotors. A significant difference was observed with respect to the manoeuvring area, distances of advance, tactical diameter, and time of the manoeuvre.
Teresa Abramowicz-Gerigk, Zbigniew Burciu and Jacek Jachowski
The paper presents an innovative steering system for a river push barge dedicated for operation in environmentally sensitive inland waterways. Development of the inland waterborne transport in Poland is dependent on the exploitation of rivers which can be adapted to navigation in the limited range because a high percent of their length is classified within special environment protection areas of Natura 2000 network. This is now the main reason that their better exploitation cannot be obtained without an introduction of a new generation of waterborne environment friendly inland units. In naturally winding rivers with differing and rapidly changing depths and widths it is important to equip a push barge with an efficient steering system that has a low environmental impact. The innovative steering system proposed in the paper is composed of main steering devices located at the pusher stern, auxiliary steering devices installed on the barge bow and a mechanical coupling system.
Teresa Abramowicz-Gerigk, Zbigniew Burciu and Piotr Kaminski
The paper presents practical aspects of development of acceptable risk levels in maritime shipping with respect to the cooperation of parties involved in maritime safety, commonly used risk acceptance principles, criteria and uncertainties related to their development. The results of analysis of risk assessment methods used for potentially hazardous operations on board ships performed on the basis of extensive studies on the onboard safety management systems is presented. The merits and drawbacks of the approach used in the development of risk acceptance criteria in onboard safety management systems are discussed.
Teresa Abramowicz-Gerigk, Zbigniew Burciu and Wiktor Stefurak
The paper presents the analysis of the ooze dredging concepts in the protected areas of harbour docks. The proposed method and system for ooze dredging are dedicated to all types of seabed protection, but the main concern are the geotextile mattresses, not resistant to mechanical damages. Due to the large seabed areas covered with this type of protection the effective method of noninvasive ooze dredging should be based on the use of a technical vessel for underwater works. The result of the analysis is the concept of the method and system for ooze dredging including in particular the mechanism for the automatic holding of the suction-dredge head in the proper distance from the seabed protection surface - the leading wheel truck and buoyancy-ballast system.
Zbigniew Burciu, Teresa Abramowicz-Gerigk, Jacek Jachowski, Edyta Kornacka and Michał Wawrzusiszyn
The paper presents the experimental and numerical investigations of a novel design of a pneumatic life raft in calm water conditions. Two main issues were considered: the life raft performance under tow and its resistance in calm water conditions. The experiment and CFD simulations were performed by using the full scale prototype to eliminate the scale effect. The towing tank tests confirmed the results of numerical computations. The compatibility of the results of numerical and experimental tests was high mainly because the new life raft does not deform under the hydrodynamic and aerodynamic loads. The characteristics similar to rigid body behaviour result mainly from a new construction and materials used for manufacturing the life raft.