Shipping giant AP Moller-Maersk will receive a $3bn boost to its earnings this year after inking longer freight contracts at higher rates.

The Danish container shipping giant said its contractual business is set to rise 20% this year and will account for more than half of its long-haul bookings.

Around 6m 40-foot equivalent units (feu) have been booked at higher contracted rates that will add approximately $550 per feu for the full financial year, chief executive Soren Skou told a conference call on Wednesday.