In the direction and conduct of measures under this chapter the Secretary shall use his best endeavors to—

(1) assure the avoidance of risk to human life;

(2) render all possible aid to distressed persons, including facilitating repatriation of ships' crews; and

(3) not unnecessarily interfere with rights and interests of others, including the flag state of any ship involved, other foreign states threatened by damage, and persons otherwise concerned.