Abstract

The big modern ships are the largest mobile objects that exist in nowadays world. Their huge mass and length in combination with their limited maneuverability can result in the risk of extreme destructions of the infrastructure, as well as environment, in the case of even minor malfunction of any of its elements. The main danger is the kinetic energy of such a colossus and in these circumstances the accuracy of information on the ship's speed becomes particularly important. This is the reason of a growing interest in various systems designed to support harbor pilots during the maneuvers. The most popular ones are based on laser-measurement of the distance, as the rule, installed as static installation in the quay. This article presents the results of the experiments of vessel’s speed measurements when approaching the quay with use the geodetic total stations in a reflectorless variant.

Highlights

  • Maneuvering a ship, especially a large one, is an operation that bears risks resulting from her enormous kinetic energy

  • That is possible with precise distance measurements, using the surveying total station located on the pier, especially since these instruments can work without any extra element installed on the vessel

  • The measurement was done by the geodetic total stations, which are precise laser distance meters, which can measure angles in horizontal and vertical planes

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Summary

Introduction

Maneuvering a ship, especially a large one, is an operation that bears risks resulting from her enormous kinetic energy. Besides some differences between operations of mooring the ship and movement of the ship in canal or similar waterways, all of them are characterized by the similar risk of unwanted movement of a vessel. Even in the case of a speed of a few decimeters per second, the energy is enormous and in addition, what is extremely important, this is in absence of any effective brake-systems. In such circumstances a maneuvering support system seems to be very attractive

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