A Maersk Line spokesman told news reports that the three carriers were co-operating with regulators, and at present still expected the P3 tie-up to launch in the second quarter of next year.
The spokesman said: “We are taking the relevant preparatory steps to make it happen, both from a legal standpoint — by co-operating with the regulatory authorities — and from an operational one.
Doubts have been expressed about whether the alliance was still on track to launch in the second quarter given the scrutiny it has come under.
The European Commission has confirmed that it is reviewing the proposals while Chinese regulators are understood to be examining the P3 Network in detail.
The US Federal Maritime Commission has already delayed the effective date of the network in the US by submitting a series of questions to the P3 carriers.
According to reports, if it had not submitted the questions, the proposals would have become effective in the US on December 8, although the carriers had no plans to actually launch the network until the second quarter of 2014.