English to Chinese Other Law: Contract(s) general

2 6.4 IN THE CASE OF FOB SALES OR OTHER SALES WHEREBY CARRIAGE IS NOT ARRANGED BY THE SELLER, THE BUYER WARRANTS THAT IT SHALL PROCURE AND ENSURE THAT THE PERFORMING VESSEL/BARGE(S) KEEP THE VESSEL/BARGE'S AUTOMATIC IDENTIFICATION SYSTEM(S) (AIS) ON AT ALL TIMES, AND TAKE NO STEPS AT ANY TIME TO SWITCH OFF OR OTHERWISE DE-ACTIVATE OR PREVENT THE PROPER OPERATION OF THE SAME DURING THE RELEVANT PERIOD, "SAVE WHERE" IT IS PERMISSIBLE AT LAW TO DO SO.

請問"save where"是"除非"?謝謝