General National Maritime Transport
The Libya’s owner GNMTC “was not aware, at any stage that the cargo is linked in any way to Iran,” the company’s spokesman said via email. (3/20/2019).
According to publicly accessible ship-monitoring data, since January 1, 2016, vessels for which GNMTC is the Operator have called at Iranian ports.
"In recent months, Libya's General National Maritime Transport—which itself was under U.S. sanctions during its civil conflict last year—has emerged as the single largest transporter of Iranian oil to the EU, with six trips in as many months, according to the Clarksons shipping database." (Wall Street Journal, "Mystery Ship Underlines Pain Tehran Faces Over Sanctions," 6/21/12)