Maersk Line has sent out a communication to its customers confirming that, following yesterday's major 'Petya' global cyber attack, some of our the group's IT and communications infrastructure have been impacted and that it has proactively shut down as a security measure.

While all immediate vessel operations will continue as planned, making the majority of planned port calls, Maersk Line is unable to serve new quotes or accept future bookings.

Access to most ports is not impacted, however some APM Terminals are affected and gates are closed, the group noted, while cargo in transit will be offloaded as planned and import cargo will be released to credit customers.

'At the present time we are unfortunately unable to serve new quotes or accept future bookings,' a company statement read. 'However we do greatly appreciate your patience and look forward to carrying your cargo as soon as it is practically possible.

'Unfortunately due to the impact on our IT and communications systems we are limited in our ability to communicate with you. We will continue to email you when appropriate and will be updating our Social Media channels regularly.

'We apologise once again for any inconvenience this may cause your business and we are working hard to resume normal operations as soon as possible.'