The Saverys family is not going down without a fight in its battle for Euronav.

The Belgian shipowning dynasty’s Compagnie Maritime Belge (CMB) has spent the last three months growing its stake in the John Fredriksen target by 2.8m shares to reach 43.7m in an effort to block a blockbuster merger with the Norwegian tycoon’s Frontline.

CMB now owns just under 22% of the company.