Liner giants Maersk and Mediterranean Shipping Co (MSC) have suspended services to the Ukraine.
The 2M partners have begun implementing contingency measures including diverting vessels away from conflict zone.
Geneva-based MSC said it had also stopped accepting new booking for the cargo to and from Ukraine.
The company added that the 3,379-teu MSC Jessenia R (built 2001) had been required to deviate during its voyage and would omit calling Odessa.