States or competent international organizations may proceed with a marine scientific research project six months after the date upon which the information required pursuant to article ۲۴۸ was provided to the coastal State unless within four months of the receipt of the communication containing such information the coastal State has informed the State or organization conducting the research that:
(a) it has withheld its consent under the provisions of article ۲۴۶; or
(b) the information given by that State or competent international organization regarding the nature or objectives of the project does not conform to the manifestly evident facts; or
(c) it requires supplementary information relevant to conditions and the information provided for under articles ۲۴۸ and ۲۴۹; or
(d) outstanding obligations exist with respect to a previous marine scientific research project carried out by that State or organization, with regard to conditions established in article ۲۴۹.