The other MPs maintain that before a decision is made, they should hear experts' evaluation of the project's impact on the environment.
Luka Bebic of the ruling Croatian Democratic Union (HDZ) urged waiting for experts' opinion and holding talks with neighbouring countries.
Slavko Linic of the opposition Social Democrats (SDP) agreed the decision should be based on the opinion of experts. He said Croatia would not keep the Adriatic safe by withdrawing from the project because tankers would transport oil nonetheless.
Bebic wondered what would happen if Croatia walked out of the project and Italy and Slovenia accepted it.
Damir Kajin of the Istrian Democratic Assembly (IDS) said citizens should have their say about the project at a referendum. He urged publishing the study on the project's impact on the environment.
Kajin said that 1,560 tankers had passed through the terminal in Omisalj in the 25 years of existence of Croatia's Janaf oil pipeline, without even one incident having occurred. He estimated Janaf would earn about USD273 million and local communities 46 million from the project in 10 years.
Speaking for the HSP, Slaven Letica estimated Janaf would generate only USD10 million annually from the Druzba-Adria project while damage would exceed USD100 million.