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Influence of cruise ship size on length of stay in port

Jurić Z., Bratić K., Dobrota D., Štolfa I.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2021

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Vol. 15 No. 2

423--426

EN

How long the cruise ship is staying in port? Does that value change during the year? Is the period linked to the number of passengers and the size of the ship? What influences overall period of the stay in port? These questions are just a sample of questions appeared before the research team which tried to establish rules of the Cruise ships seasonal pattern on the East Coast of the Adriatic Sea several questions appeared. Answers to cited questions are presented in this article, obtained by analysing the behaviour of cruise vessels in three biggest ports on the East Coast of the Adriatic Sea during the period of two years.

2

Determination of the cruise vessels seasonal pattern ineastern Adriatic

Stanivuk T., Mišura A., Stazić L., Štolfa I.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2021

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Vol. 15 No. 4

743--748

EN

The notion of a seasonal pattern of cruise ships has been used frequently, but very few authors have analysed all the features of this pattern. This article adds some new insights on this topic by analysing cruise ship activity in the three largest ports on the east coast of Adriatic Sea in 2017 and 2018. The article presents an analysis of cruise ship arrivals at the ports and compares the analysis to the established pattern in the Mediterranean, revealing the nature of the seasonal pattern for the ports analysed. In addition, two further analyses were carried out, firstly the analysis of ship size, which determines new characteristics of the seasonal pattern. The second additional analysis considered the duration of ship visit during different times of the year and determined another pattern characteristic.

3

Towards a Scaled Manoeuvring Mathematical Model for a Ship of Arbitrary Size

Artyszuk J.

Zeszyty Naukowe / Akademia Morska w Szczecinie

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2005

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nr 6 (78)

21-37

EN

The fundamental fact about manoeuvring of geometrically similar ships, of whatever length (or size) and initial steady approach speed, including scale physical models and the whole series of full-scale ships (if they really exist), is that the nondimensional track (in ship length units), the drift angle and the nondimensional yaw velocity are maintained. The only difference is the allocation of time moments to subsequent ship positions and/or heading. The higher is the speed and the shorter is the hull length, the time 'runs' faster. The present paper deals with a methodical explanation of these phenomena in view of building the manoeuvring model for a virtual ship of arbitrary size. Problems with satisfying the similarity of propeller parameters, the occurrence of scale effect in the resistance coefficient, and the consequences of variation in the ratios of main dimensions are analysed against the increasing ship length.

PL

Przedstawiono wybrane zagadnienia teorii badań modelowych, które są pomocne w zrozumieniu zachowania się geometrycznie podobnych statków, bądź tego samego statku, lecz o różnych prędkościach początkowych manewru. Przeanalizowano również problem braku podobieństwa między małymi i dużymi jednostkami w zakresie parametrów układu napędowego, szczególnie śruby napędowej oraz stosunków wymiarów głównych.