2U.K.If, in the circumstances set out in paragraph 1, the salvor by his salvage operations has prevented or minimised damage to the environment, the special compensation payable by the owner to the salvor under paragraph 1 may be increased up to a maximum of 30 per cent. of the expenses incurred by the salvor. However, the tribunal, if it deems it fair and just to do so and bearing in mind the relevant criteria set out in article 13, paragraph 1, may increase such special compensation further, but in no event shall the total increase be more than 100 per cent. of the expenses incurred by the salvor.