Boxes were stacked nine high and eighteen wide. Fortunately PSA Halifax has a pair of long reach cranes, with another one coming this year, to handle these very wide ships. (I believe the ship was 20 boxes wide amidships)
Speaking of wide however, someone mis-judged width when re-inscribing the Canadian port of registry for Ferbec. The ship sailed this morning for Havre-St-Pierre under Canadian flag, a little earlier than last year.
Last year's crew did find the centre line when doing the same job, painting out Bridgetown (Barbados), see: http://shipfax.blogspot.com/2019/03/ferbec-not-ready-yet.html