单项选择题 If the salvor has carried out salvage operations in respect of a vessel which by itself or its cargo threatened damage to the environment and（）a reward under Article 13 at least equivalent to the special compensation assessable in accordance with this Article，he shall be entitled to special compensation from the owner of the vessel equivalent to his expenses as herein defined.

单项选择题 Persons who have taken part in salvage operations，notwithstanding the express and reasonable prohibition on the part of（），have no right to any remuneration.

单项选择题 RYTLX DD 5TH/4 HAVING CONTACTED HARBOUR OFFICE AND LOCAL SALVAGE COMPANY WE WUD LIKE TO ADVISE TT，THEY ARE GLAD TO ASSIST YOU TO POSITION THE ANCHOR AND GET IT OUT OF WATER. This fax says that（）.