I have 4+years of work ex in merchant navy and 1+ year in marketing of marine engines. i want to do mba in europe . Please tell me is my experience sufficient and helpfull for 1 and 1.5 year programs, fees, and which colleges i can look for. also scope for international business and executive mba. Course length not more than 18months !

You can search for programmes here: https://find-mba.com/search/result?area=20/21&language=1&duration=6;18 

They will have different requirements. They will also look for a degree and a GMAT score, typically.

i havent given my gmat yet. but my degree is in marine engineering from bits, pilani ( birla institute of technology). could you tell me how many colleges are offering 1 to 1.5 yeas mba in internation business and whats the scope do i have of getting into executive mba

Without a GMAT, very few opportunities. You can use the search to identify one year MBAs.

Executive MBAs are part-time. You cannot get a student visa for a part-time MBA in Europe. I don't think many executive MBAs will groups students with less than six or seven years of quality work experience.

Really, you can get this information yourself by visiting the websites of some business schools. Please use the board for questions where an answer is not so easily found.