This expression is more in charterer?s favor than ?per hatch per day?. The word ?working? or ?workable? hatch means that hatch can be worked because there is cargo in the hold below it. Workability refers to the cargo and not cranes/derricks that serve the hatch in question. Largest quantity in one hold/Daily rate per hatch x Number of hatches serving that hold =Days; A hatch that is capable of being worked by two gangs simultaneously shall be counted as two hatches.