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1 INTRODUCTION

In shipping industry, as well as in other industries,

present and future trends are intensely focused on any

aspect of pollution, especially on air pollution caused

by exhaust gases. Although, ships during their voyage

or stay in port create pollution, in present researches

and analysis of pollution are increasingly determined

of their visits during entire year. Many papers focus

their research on air pollution caused from cruise

ships during their time spent in ports, where most

common source of data used is from the MedCruise

Association [1]. Only minority of the researches tried

to determine and analyse seasonality pattern [5].

An attempt is undertaken to analyse the seasonal

pattern for the east coast of Adriatic Sea, analysing

cruise ships and their behaviour during two

consecutive years, analysing three largest ports in the

area, Split, Dubrovnik and Kotor. Results are

to those questions, looking in the seasonal pattern not

only on the large scale, but dividing cruise vessels in

smaller segments.

In order to determine actual duration of cruise ship

stay in port and if there is any link to the ship size,

data collected for two-year period are analysed,

providing mean values integrated within diagrams.

Since literature review reveals that for most port calls

for cruise ships take place during summer period,

mean value is used to exclude any proportions of

ABSTRACT: 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.

For this analysis ship size is divided according to

During the summer, there are close to 100 monthly

port calls of the vessels larger than 200 [m], about 50

of medium size vessels and less than 30 port calls of

vessels smaller than 100 [m]. During the peak period,

only about 10% of all cruise vessels calling to Eastern

Adriatic ports are smaller than 100 [m].

Due to the cessation of arrivals of larger cruisers

during the winter months, the percentage of arrivals

of smaller cruisers during the winter months exceeds

90% (100% in the February).

3 CRUISE SHIPS STAY IN PORT

Stanivuk et all. [11] determined cruise ships average

stay in port which is presented on the Figure 3.

different (Figure 4 and 5). Seasonal pattern, shown on

the Figure 3 and described in the paper [11] cannot be

identified when stay in port is divided into groups.

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During the winter, smaller ships stay in port a little

longer than in summer, about 20 hours longer which

is attributed to worse weather during the winter

months [2, 3]. Medium sized and large cruise vessels

have almost constant stay in port, when there are

cruisers stay very short. It should be noted that this

can only be concluded for Eastern Adriatic Sea, due to

the fact that some worldwide cruise destinations are

related with exclusively winter season. This fact can

be supported with the assumption that some ships

with length overall less than 100 [m] have navigation

area restriction and cannot travel worldwide in order

to visit attractive winter season cruise destinations.

4 CONCLUSION

Analysis in this paper was performed in order to

authority’s data were used so sample distribution of

port calls and hours spent in port could be

determined. Additionally, to provide more consistent

sample distribution a two-year period is observed and

mean value of each sample is introduced.

spent in ports are lesser then on smaller capacity and

size ships. Opposite pattern is noticed for port call

point of view, meaning that cruise ships with greater

size tend to make more port calls than ships with

smaller size. Median values are used to exclude

extremely small or high values that occur during