the kind of Panamax that drives canal workers crazy -just under the dimensions of the largest ship to transit the canal at 294 by 32m -and those extra dimensions dont do any good until the larger 3rd set of locks are operational as until now the draft limitations of Gatun lake has defacto limited transiting cargo to 52500 tons

and so the owners of those Panamax prefer trans-pacific transits to more fully utilize capacity, which favors CWRN as compared to Brazil etc