Table 3. Structure of sampling respondents

Sample characteristics	Groups	Effective samples	Group shares (%)	Cumulative percentage (%)
Age	21 to 30	9	18.0	18.0
	31 to 40	10	20.0	38.0
	41 to 50	17	34.0	72.0
	51 to 60	10	20.0	92.0
	Above 60	4	8.0	100.0
Work experience (years)	Below 5	7	14.0	14.0
	6 to 10	9	18.0	32.0
Work experience (years)	11 to 15	3	6.0	38.0
	16 to 20	8	16.0	54.0
	21 to 25	14	28.0	82.0
	Above 26	9	18.0	100.0
Main business market	Deep ocean	20	40.0	40.0
	Short sea	21	42.0	82.0
	Both in even	9	18.0	100.0
Title	Top manager	10	20.0	20.0
	Middle manager	18	36.0	56.0
	OP/CS staff	15	30.0	86.0
	Sales	4	8.0	94.0
	Document staff	3	6.0	100.0
Company history (years)	Below 5	5	10.0	10.0
	6 to 10	6	12.0	22.0
	11 to 15	5	10.0	32.0
	16 to 20	6	12.0	44.0
	21 to 25	3	6.0	50.0
	Above 26 years	25	50.0	100.0