In the case of ships which employ such groups of ratings as necessitate the employment of substantially larger number of ratings than would otherwise be employed and where special consideration has been obtained for a reduction in the minimum floor area of sleeping rooms per person is:

여기서 otherwise는 어떻게 해석을 해야합니까?

The total sleeping space allotted to the group or groups not less than would have been allotted had the numbers not been so increased,and .....