The segmentation of the demand for ferry travel – a case study of Stena Line

Abstract In an era of fierce competitive struggle about clients, enterprises seek information on characteristics of the main customer segments purchasing their services and goods. This knowledge is crucial to the marketing efforts of enterprises. The purpose of this research is to understand the changes in demand due to the diversity of travel motives. The study identifies distinct segments of travellers due to their motives of ferry travel, i.e., tourism, visiting relatives, work-/business-related and also three other segments with a mixture of these motives. It is also shown that each of these segments has a different profile in terms of their behavioural and socio-demographic characteristics. This article presents the results of surveys carried out among passengers travelling by Stena Line ferries on the route from Gdynia (Poland) to Karlskrona (Sweden), as well as the results of a literature review and ‘desk research’ of available statistics. The method of realisation of representative study can be useful for other researchers and the results of the study can be an interesting source of information both for ferry carriers and other entities in the tourist sector in the Baltic Sea region.


Introduction
The Baltic Sea region is famous for its dense network of ferry connections. The downward trend in demand has been observed both in the number of handled passengers and cars in Europe in recent years. In 2013 49.57 million people were carried by passenger ferries in the Baltic Sea region, when compared with 2012 when 50.73 million people travelled by ferry, 2013 saw a decrease of about 3%. Passenger ferry travel from Poland to Scandinavia was fairly stable and recorded a slight increase, because in 2013 more than 1.1 million passengers were carried. The Stena Line became the market leader among the ferry carriers in Poland with a market share of 46.2%. In 2013, the Stena Line carried more than 509,000 passengers on the route from Gdynia to Karlskrona (Urbanyi-Popiołek, 2014, pp. 9-10).

Ferry travel; tourism; demand; segmentation
The transport of goods generates the greatest income, and the carriage of passengers brings only a small percentage of the total revenue for ferry companies. Ferry carriers appreciate the benefits derived from the passenger traffic and seek to attract their attention. They compete by upgrading the quality of the vessels by creating luxury cabins, bars, restaurants and cafes, as well as casinos, cinemas, theatres and spa & wellness facilities. The number of combinations of services, offered to passengers travelling by sea, is flexible and depends on clients' needs and preferences (Kizielewicz, 2012, p. 113). Some ferry vessels even compete with the luxury cruise ships. Nowadays, all passengers of various profiles with a variety of expectations can find something of interest during their ferry travel (Kizielewicz, 2013, p. 30).
Initially, ferry shipping meant an extension of roads to cross the straits and channels (Miotke-Dzięgiel, 2002, p. 20), and ferries were the floating bridges and primarily met transport needs. Ferry shipping is designed to extend the land-based routes and to create the sea corridors for carriage of goods and passengers. Thus, the definition 'ferry shipping provides regular connections between ports of the same state or of different states, usually in the borders of the sea' (Kujawa, 1999, p. 120-121). The ferry shipping differs from other forms of marine transportation in several respects. First, regularity of connections on routes with a length of from a few dozen to a few thousand sea miles and second, the vessels used are designed for transportation of passengers, cars and trucks, and even railways (Kujawa, 1999, pp. 120-121). Truly ferries have changed from 'floating bridges' to 'floating hotels' and 'floating beaches' (Miotke-Dzięgiel, 2002, p. 20).
In Poland, a few institutions deal with research of the ferry market, i.e., the Polish Border Guard (PBG), the Central Statistical Office (CSO) and several maritime universities. The PBG keeps permanent records of the cross-border traffic of passengers and means of transports on all marine border crossings in Poland. The CSO collects and analyses data on border crossings due to their nature and registers the nationality of people who cross. Unfortunately, this type of research has a fairly general character and its use is limited. Research carried out by the public entities are mainly quantitative rather than qualitative and are intended for general statistics. Ferry carriers follow the trends and results of the scientific studies on consumer behaviour in order to adapt the companies' marketing policies to meet the needs of the market. They are interested in demand segments to obtain competitive advantages in their markets. Therefore, we attempt a deeper analysis of the phenomenon. The purpose of this research is to understand the changes in demand due to the diversity of travel motives. The research questions were the following: (1) What is the structure of tourist demand for ferry travel in terms of demographic characteristics?; (2) What are the motives of people travelling by ferry?; and (3) What kind of services are mostly purchased by people travelling by ferry?
As a result of the above considerations, the following working hypotheses are presented: (1) H 1 -The majority of passengers travelling by ferry on the route Gdynia-Karlskrona travel to their places of work in Sweden and Norway, therefore it is assumed that there is a significant relationship between the motives for ferry travel declared by ferry passengers and the destination countries tp which they go.
(2) H 2 -There is a significant relationship between the motives for ferry travel declared by ferry passengers and the socio-demographic characteristics of travellers. (3) H 3 -The majority of travellers travelling for work and business do not purchase any extra services that are offered on-board ferries, therefore it is assumed that there is a significant relationship between the motives for ferry travel declared by ferry passengers and the goods and services purchased by them on-board.

Theoretical background
The issue of market segmentation has been an important part of marketing research for some time. Kotler, Armstrong, Saunders and Wong (1999, p. 379) say that market segmentation is a kind of specification of various groups of consumers with similar characteristics and behaviours in the market. These groups need to be treated as individuals as far as marketing activities are concerned. Middleton (1999, p. 77) defined the phenomenon of segmentation as the division of general market on subgroups for marketing purposes and applying the effective promotional activities geared to meet the specific consumers' needs and preferences. This phenomenon is similarly described by Tangeland (2011, p. 438) who indicated that the purpose of market segmentation is the division of consumers to homogenous groups on the basis of one or more criteria, i.e., smaller niches with similar characteristics. source: (Bhat, 1997, pp. 34-48;Golob & hensher, 1998, pp. 1-18;Badoe & miller, 1998, pp. 190-215;Lieberman et al., 2001, pp. 60-67;Golob, 2001, pp. 495-514).

Authors Year
The advances in the area of segmentation for travel behaviour analysis c. R. Bhat 1997 he used an endogenous segmentation approach to model mode choice, which jointly determines the number of market segments in the travel population, assigns individuals probabilistically to each segment, and develops a distinct mode choice model for each segment group. t. F. Golob & D. a. hensher 1998 they studied the dichotomy between an individual's behaviour and his or her attitudinal support for policies that are promoted as benefiting the environmental. they developed a measurement model to establish a set of latent attitudinal factors. D. a. Badoe & E. j. miller 1998 he developed an analytical procedure that identify segments by simultaneously dealing with level of service, socioeconomic and spatial factors to determine the relative role each plays in determining travel behaviour. W. Lieberman In practice, five criteria relating to market segments in order to be able to realise marketing efforts have been distinguished, i.e., a segment of a market has to be: measurable, substantial, accessible, differentiable and actionable (Middleton, 1999, p. 77). Market segmentation is used to differentiate an offer from other, competing ones. Ren and Blichfeldt (2011, p. 418) pointed out that product differentiation is the most important step in marketing and that products should be promoted so as to create 'one clear identity' in order to present 'a clear image' to customers.
According to Dolnicar, Kaiser, Lazarevski and Leisch (2011, p. 41) segmentation allows entities in the tourist market to extract specific groups with similar characteristics and this knowledge is used in the marketing mix in order to encourage the widest possible group of tourists to purchase specific offers. The specialisation and targeting of products to an individual market segment could give businesses a competitive advantage in the market.
Conducting market segmentation is not simple and there are many different types of options, variables, models and techniques (Outwater et al., 2003, p. 172-173). The choice depends on the characteristics of the market, and on the needs of the company carrying out the analysis. Skrzeszewska (2011, p. 272) highlighted that companies in the past concentrated their efforts on the doorstep and they avoided direct price wars with competitors. They focused on the long-lasting competitive advantages. Nowadays, the situation has changed and companies are ready for the competitive struggle to gain customers, to look for niches and segments on the market where they could be unique. Marketing segmentation creates a lot of advantages for mass marketing. By adjusting products for customers who represent various consumer behaviours and specified market segments, the entrepreneurs can offer better services and act more effectively within the market (Kotler et al., 1999, p. 380-381).
The desirability of conducting research on the needs and expectations in order to extract segments of the tourism market is affirmed by many experts (Tangeland, 2011, p. 435;Dolnicar et al., 2011, p. 41). The process of market segmentation is a multistep task (Kotler et al., 1999, p. 408). In most cases, it begins with analysis of the market competition (Nechita, Muntean, Sarpe, & Nistor, 2010, p. 103) and pilot studies of the group of potential customers in order to develop appropriate research instruments. Then surveys and interviews are conducted to identify customers' motivations (Šimková, 2011, p. 232), as well as customers' behaviour and interests in products or services. In a study of one segment, researchers usually apply the test of 100 interviews, therefore, to explore more segments, a greater number of tests should be applied (Kotler et al., 1999, p. 408). In the next stage of the research, the empirical data are subjected to quantitative and/or qualitative analysis. Kotler et al (1999, p. 408) suggested using factor analysis to remove highly correlated variables, then applying a cluster analysis to find segments. Then the segments need to be validated, i.e., verified that the extracted segment is stable and true.
Finally, profiling is the last stage of the process of market segmentation. Kotler (2000, p. 263) distinguished two main groups of characteristics according to which the market segmentation is made, i.e.: (1) geographic, demographic and psychographic; and (2) the characteristics defining the consumers' behaviours to products' brands or promotional activities, etc. In practice, in market segmentation -including tourism -different variables are used (Outwater et al., 2003, p. 15). Šimková (2011, p. 232) and Nechita, Muntean, Sarpe and Nistor (2010, p. 103) wrote about it, as well. The most widely used variables are: geographic (region, country size, city size, density, climate,), demographic (age, gender, family size, family life cycle, income, occupation, education, religion, race, nationality), psychographic (social class, lifestyle, personality), and also behavioural (purchase occasion, benefits sought, user status, user rate, loyalty status, readiness state, attitude toward products) (Kotler et al., 1999, p. 386). The segmentation of the demand in marine tourism, including ferry travel, is contributed to by the following factors (Kizielewicz, 2013, pp. 30-31): • changing shopping behaviours of people travelling by sea from passive to active • competitive struggle for clients among ferry carriers • desire of the ferry carriers to maintain a demand for marine travel • growing popularity of ferry travel among various groups of tourists • development of information systems (Internet, mobiles) and social networking (Facebook, Twitter, YouTube, Blogger, etc.) make opportunities to organise joint expeditions, including marine cruises, by groups with various interests.

The ferry travel market in Poland
In Poland, there are two different groups of travellers in sea ports, i.e., the ferry passengers who depart from two cities, Gdynia and Świnoujście, and one-day visitors coming from the cruise ships because Polish seaports are only ports of call for cruise ships (Najder, 2013, p. 59). Polish citizens, who want to purchase a sea cruise, are forced to go to the sea ports in Copenhagen, Rostock or Stockholm, where there are base ports for cruise ships. Due to that, only ferry travel is the subject of study and analysis in this article. Stena Line is one of the world's largest ferry operators and the largest privately-owned shipping company in the world. The biggest ferry boats operating in the Polish market belong to Stena Line, who operate on the Gdynia-Karlskrona ferry route, and now it has three ferry units at its disposal, i.e.: Stena Vision and Stena Spirit (1700 passengers each) and also Stena Baltica (1200 passengers) (Stena Line Poland Ltd., 2014).

Methodology
The subjects of the survey were travellers on Stena Line ferries on the route Gdynia-Karlskrona, who responded to a questionnaire in late 2012 and early 2013. The data collection was carried out in collaboration with the Sales and Marketing Department of Stena Line Poland Ltd. The survey questionnaires were prepared in Polish, English and Swedish. Survey questionnaires were distributed to respondents, who expressed willingness to participate in research at the ferry terminal and on-board the ferries. Each survey questionnaire contains 11 closed questions used for classification, coding, and analysis of data (Kaczmarczyk, 1995). The questionnaires end with questions about respondents' personal characteristics, i.e., gender, age, education, occupation, income and place of residence, all of which are required for conducting market segmentation. To calculate the minimum size of the empirical sample we used the following formula: where: N = number of general population (all travellers on all ferry lines between Gdynia-Karlskrona), d = requested accuracy test, tvalue of the unloaded estimator assuming that it will be different from the estimated parameter more than standard deviations of the estimator distribution (in the study t = 3), p = q = 0.5 -It was assumed like that because the estimated proportion has not been known. In this model it is assumed that t = 1.96 (with the confidence factor α = 0.05) or t = 2.58 (with the confidence factor α = 0.01). The question of whether the first or second value to substitute for 't' depended on the consequences of what would entail a less accurate estimation of an average 'x' than the desired. If high care is desirable in this respect, it should be t = 2.58, or possibly even higher, value t = 3. In the case of the opposite, it should be given the value t = 1.96. Of course, the adoption of a greater 't' value (1.96 -2.58; α = 0.05; α = 0.01) causes an increase in the sample size (Zasępa, 1962, p. 126). Conducting a pilot study is a basic condition to apply this formula for the calculation of the sample size (Mazurek-Łopacińska, 1997). In the study, the method of random selection was used as the population structure was impossible to define clearly. According to the market research methodology used in the countries of the European Union, the size of the demand can be partially assessed on the basis of the data for passengers' transport (Central Statistical Office, 1998). The calculation of the minimum size of the representative sample for those travelling by ferry was assumed to be the same as the average number of passengers carried by Stena Line ferries on the Gdynia-Karlskrona route in the high tourist season from 2007 to 2011 (Table 2). Based on the results of the pilot studies, it was found that the number of respondents needed in the main survey was 1270, to ensure the representativeness of the results of research for the estimated population. Finally, the sample includes 1354 completed questionnaires. However, verification of correctness of completing questionnaires and their selection caused elimination of 97 survey questionnaires, because they contained shortcomings and errors. As a consequence, 1257 survey questionnaires were included in our analysis.
In this study, the market segmentation of people travelling by Stena Line ferries was carried out on the basis of selected variables from the previously mentioned groups, i.e., demographic (age, gender, income, occupation, education), and behavioural (benefits sought and attitude toward products).

Ferry passengers' motivations
The most common classification of travel objectives was created by the World Tourism Organization. The objectives mentioned are: tourism, leisure, visiting relatives/friends, interests and others (Central Statistical Office, 1998). Analysis of the tourists' motivations, which are the driving force in choosing the form and type of a travel, enables us to characterise the types of tourists and understand the purchase process made by various market segments. These motives should be described in relation to goal-oriented forms of behaviour or holiday choice of activity (Cooper, Fletcher, Gilbert, & Wanhill, 1998, p. 37). We conducted our analysis on the data collected from a group of 1257 respondents, 69% of the respondents were men (873 passengers) and 31% were females (384 passengers). In the study for Stena Line Poland Ltd. the travel motives were applied, i.e., tourism, visiting relatives and business-/work-related.
The survey showed that 43.20% of respondents travel by ferry to Scandinavia giving work as the reason. The study also proved that 41.85% of respondents travel for tourism. Ferry travel was also chosen by tourists travelling to visit relatives (11.46%). It is worth noting that a total of 3.49% of respondents indicated a few mixed objectives of travel, i.e., 1.03% were tourists and also visiting relatives, 1.35% were tourists and also had business-/ work-related reasons and 1.11% were visiting relatives and also had business-/work-related reasons (Table 3).
Statistical analysis showed that there is a statistically significant relationship between the reasons for ferry travel declared by ferry passengers and the destination countries they go to (χ 2 Pearsona: 255,804, df = 10, p = 0,00000), which indicates that the H 1 hypothesis has been verified positively. The majority of respondents -67.46% -declared ferry travel to Sweden. Norway was pointed out as the second most important destination (28.56% of respondents). Passengers travelling for work and business reasons were more than 43% of the total respondents and 21.48% of them travelled to Sweden, and 21.08% to Norway. The findings also showed that Sweden is considered to be the greatest tourist destination for ferry passengers because 36.99% of respondents travelling for tourist motives chose that country as a place to visit. The rest of the travellers (3.98%) declared other countries, mainly Finland, Denmark and the UK (Table 4).

Ferry passengers' demographic segmentation
Segmentation of consumers into groups is made on the basis of the different variables, However, demographic characteristics are considered to be the most important ones, i.e., age, family size, family life cycle, gender, income, occupation, education, religion, race, generation, nationality, social class (Kotler, 2000, p. 263). Each market segment is characterised by different demographic features, and their knowledge is essential to support the forecasting of market segments for future populations (Outwater et al., 2003, p. 15). For the market segmentation of consumers travelling by ferry, based on the survey, a few selected demographic variables were applied, such as age, gender, education, occupation and income. Tourist activity is determined by the achievement of a certain cultural level. This level determines the choice of forms of tourism, intensity of tourist activity and influences upon preferences concerning the management of leisure time. Researchers dealing with consumer demand consider that the level of education is the most relevant part of this culture (Kotler, 2000, p. 263). Numerous studies (Alegre & Garau, 2010, pp. 52-73;Duk-Byeong & Yoo-Shik, 2009, pp. 99-108;Mazilu & Mitroi, 2010, pp. 159-166;Swansona & Horridgeb, 2006, pp. 671-683) have shown the positive correlation between education and tourist activity, i.e., the higher the education a respondent has, the higher tendency for travelling she/he has. Generally speaking, education stimulates the desire to travel and increases awareness of travel opportunities (Cooper et al., 1998, p. 43).
The analysis of the structure of professions is also an important demographic factor used for conducting of the market segmentation and studying consumer behaviours. The structure of professions belongs to a subgroup of cultural variables (Kotler, 2000, p. 263). In the survey, the classification of occupations and specialties based on the International Standard of Classification of Occupations (ISCO) (2008) recommended by the International Labour Organisation (ILO) and EUROSTAT was applied. In Poland, this classification is adopted by the CSO and accepted by the Polish government (Minister of Labour & Social Policy, 2010). In the survey, three ranges of monthly salaries in Poland were applied -not exceeding the value of the lowest salary, not exceeding the average salary in 2012 (3496.82 zlotys) and higher than the average monthly salary (The Chancellery of the Prime Minister, 2012). Personal income is considered to be the most important economic factor influencing consumers' behaviour (Nechita et al., 2010, p. 103). A low level of income may constitute a barrier for the development of demand for goods and services.
All these variables were used to define the main segments of ferry travellers: tourists, visiting relatives and business-/work-related travellers and also a few others who travel for other reasons. An analysis of the respondent's socio-demographic characteristics is presented in Table 5.
A series of chi-square tests were applied to investigate if there was any statistical relationship between the motives of ferry travellers and the socio-demographic variables of each group. All the statistical analysis proved was that there is a significant relationship, which means that the H 2 hypothesis was verified positively ( Table 5).
The sample of the study amounted to a total of 1257 respondents. The majority of the respondents were male (69.45%), thus 30.55% were female. A large proportion of the respondents were aged between 24-34 (30.55%) and 35-44 (6.89%). More than 40% of the respondents declared a secondary education, and 35.40% declared high school diplomas. They were mostly specialists (14.56%) and engineers or other average employees (9.39%) and their monthly earnings were generally higher (40.89%) than the average salary in Poland (Table 5).
The study showed that in the main segment, in terms of numbers of travellers, there were passengers travelling for business-and work-related motives and they represented 43.20% of the total respondents (543 passengers), and 36.04% were males and 7.16% were females. Most people in this group were aged between 25 and 34 years (16.31% of all respondents), and 13.05% were in the age group 35-44 years. A survey also showed that this market segment was dominated by people with secondary school education (18.85%) as well as a university education (10.98%). In view of the fact that people in this group travel in order to reach their place of employment, it is also important to characterise the occupations which they represented and the level of their monthly income. In this market segment, there were representatives of all professions, but mostly they were employed as industrial workers and artisans (6.92%), and also specialists (5.98%). This segment includes such professions as: psychologists, sociologists, educators, physicians, veterinarians, dentists, first contact doctors, investment advisers and others. This market segment was also a top one business group, as most of this group (21.48%) were people with incomes above the national average salary.
In the second market segment we find people travelling by ferry for tourist reasons. They represented a total of 41.85% of all respondents (526 passengers), 24.26% were male (305 passengers) and 17.58% were females (221 passengers). As in the above-mentioned market segment, this was also dominated by people aged between 24-34 years (10.10% respondents) and 35-44 years (10.02%). The market segmentation regarding age confirms a worldwide trend in the market. It also confirms the analysis of the research carried out by Skrzeszewska, who noted that 'taking into account the age structure of people travelling on tourist motives, people aged 25-44 years are the largest group (57.6%), but the smallest group -older than 65 years (45%). These data refer to the average values for the EU as a whole' (Skrzeszewska, 2012, p. 140). Passengers travelling for tourist motives were mainly university educated (18.77% of all respondents) and also secondary school educated (16.23%). This indicates that people with a secondary and university education travel more frequently. In this group, there were people employed mostly as specialists (6.60%) and as office workers (5.25%). Most respondents in this group had incomes on the level of the average salary in Poland (18.06%).
The third market segment was passengers travelling to visit relatives. They represent a total of 11.46% of all respondents (144 passengers), 6.76% were male and 4.69% were female. Similarly, as in the market segments mentioned above, they were mostly aged between 24-34 years (3.10%) and 35-44 years (2.70%). The study showed that most travellers in this group had a secondary education (4.46%) and also a university education (3.82%). Due to the fact that these passengers usually travel for other than commercial motives, the frequency dispersion is very large in the variety of professions. Travellers represented all groups of professions at the level of 1% of all respondents with no apparent dominance from any of them. However, when the monthly salaries of the passengers from this market segment were concerned, the full range was represented (Table 5).
Findings also allowed us to extract three smaller segments of travellers who indicated several various motives for their ferry travel, i.e.: (1) tourism and visiting relatives (n = 13); (2) tourism and business-/work-related (n = 17); and (3) visiting relatives and business-/ work-related (n = 14). They represented a total of 3.49% of the respondents. As in the market segments analysed above, there were more men than women, aged from 24-34 years and 35-44 years with mostly secondary and university educations, representing mainly the specialist segment. Their monthly earnings were at the level of the national average, and only in the group of visiting relatives and business-/work-related were the earnings above the national average (0.71% of total respondents).
The most important group of consumers for the owners of shipping lines are those who make use of ferry services regulary and with a great frequency, because they provide permament incomes for ferry carriers and are considered to be a segment of loyal customers.
The study showed that only 15.27% of all passengers travelled frequently for business-and work-related motives and 14.64% travelkled occasionally for contract or seasonal work. In the market segment of passengers travelling for tourist motives 21.88% of all responedents confirmed that they were travelling for the first time and 15.57% travelled on an occasional basis.

Ferry passengers' buying behaviour
A statistical analysis of the study showed that there is a relationship between the travel motives of ferry passengers and the scope of services which they purchased on-board the ferry. The passengers travelling for tourist motives represented the largest segment of passengers purchasing the services on-board of the ferries. One hundred and thirty-two travellers from this segment (10.5% of the respondents) booked cabins, and 125 (9.94%) declared that they also benefitted from the catering services. In addition, between 1% and 2% of the total respondents declaring tourist motives used all other services offered on ships, i.e., wellness and spa, fitness clubs, etc.
As far as the passengers travelling to visit relatives are concerned, 162 of respondents (12.89%) booked cabins, and 172 (13.68%) said they took advantage of food services. A small demand for the extra services offered on-board was also noted in this group of consumers (4.46% of the respondents) ( Table 6).
The lowest activity when it comes to purchasing services on-board the ferries was reported in the segment of travelling for business motives. A small group in this segment limited their purchases primarily to accommodation (3.82%) and catering (1.43%). Forty-four passengers of this segment (3.5%) confirmed that they benefitted from both accommodation and food on-board. Other services were not of interest to them (Table 6).
Statistical analysis by applying chi-square tests (χ 2 Pearsona: 342,238, df = 170, p = 0,000000) showed that there is a statistically significant relationship between the motives of ferry travel declared by passengers and the goods and services purchased by travellers on-board the ferries. In spite of the fact that people travelling for work and business motives were the largest group of ferry travellers on the route from Gdynia to Karlskrona, on the basis of the above discussion, we may conclude that our working hypothesis the H 3 hypothesis -that the majority of them do not purchase any extra services that are offered on-board the ferry -was verified positively (Table 6).

Discussion
Every operator, including ferry carriers, should be aware that the lack of knowledge about the factors influencing consumers' decisions about purchasing tourist products can be the cause of the inefficient management of the tourist market (Cooper et al., 1998, p. 31). Regular market research, tracking changes in consumer behaviour and evaluation of the reaction of consumers to new products, is an activity that should constitute an important phase of the marketing efforts in the enterprises, thereby giving them a competitive advantage in the market (Babaita, Munteanu, & Ispas, 2010, p. 99;Pasca, 2013, p. 265). One has to remember that 'consumer decision-making is interpreted as the process of acquiring information for and integrating information into related purchase decisions' . Researchers reported that the consumers' behaviour and decision-making by them is associated with the process of analysis of internal and external information, including information search, evaluation and integration (Choi, Lehto, Morrison, & Jang, 2012, p. 26;Beatty & Smith, 1987, pp. 83-95;Jeng & Fesenmaier, 2002, pp. 15-32;John, Scott, & Bettman, 1987, pp. 38-47;Payne, 1976, pp. 66-87). The study also showed that only 10.26% of respondents travel regulary by ferry and 30.15% -travel for the first time (Table 7).
The management of ferry lines try to follow the trends in the market and they have committed considerable resources in understanding their customers' needs, and have subsequently adapted their offerings to meet customers' expectations. Bull (1998, p. 11) claims that the companies where the strong marketing-oriented approach is used provide products corresponding to the clients' needs and are more efficient in the market. There is a clear need to acquire knowledge on customer preferences and motives of purchasing behaviour and to learn about the impact of marketing tools on the process of purchasing goods by consumers. Finally, it is worth noting that various market segments are extracted from purchase behaviours (Cooper et al., 1998, p. 31). Market segmentation can be applied at lots of levels in order to define broader types of buyers who differ in their product needs or buying responses (Kotler et al., 1999, p. 379). There are sectors in the market, in which an individual approach to a client is a big advantage. Every client has various expectations, preferences, and needs and it is good if entrepreneurs use distinct affiliate marketing programmes tailored to different clients (Kotler et al., 1999, p. 379). However, as a rule, these are the industries that offer products and services of the highest standard and quality. However, in a case of ferry travel, individual preparation of products for an individual customer's needs is economically unreasonable. Therefore, ferry carriers are geared to meet the needs of large groups of customers representing a specific segment of the market.

Conclusions and implications
We identified six customer segments travelling by Stena Line ferries on the Gdynia-Karlskrona route. These were named according to ferry travel motives: (1) tourists; (2) visiting relatives' (3) business-/work-related travellers, and also three others segments which are a mix of the previous segments. To profile these segments we analysed the generic structure of the tourist demand for ferry travel in terms of demographic variables and purchasing behaviour of passengers on-board ferries.
The dominant segment is represented by ferry passengers travelling for business-and work-related motives. However, the segment represented by passengers travelling for tourist motives is also very strong, but the market segment relating to passengers visiting relatives represents the smallest market share. The working hypothesis relating to purchasing behaviour was verified positively and this is also useful information for ferry carriers because revenues from selling the ferry tickets are enriched with benefits from the sale of goods and services on-board vessels. The survey provided interesting insights and useful information both for ferry carriers and entities in the tourist sector in the Baltic Sea region, i.e.: • Extracting the key market segments on ferry travel offered in the Baltic Sea region. • Preparation of tenders, which will be better adapted to the needs and expectations of potential customers.In an era of strong competition for customers, led by the ship-owners of ferry lines, the chances of success are given to companies who care about their customers' satisfaction and meet their expectations. One proactive tactic is to continuously follow and collect foresight information by conducting regular market research to track changes in consumers' behaviours.