SAN —FRANCISCO,March 17—So, the bible class of the First Congrega tional, church. ‘here, Which he was bidding farewell as its teacher,Cur tis Dwight Wilbur, ‘secretary of the Navy, Made a statement of policy. “The ony policy I have formed, he told his pupils, is a determination: to make the American navy a safer place for the boys of American mo thers to work or live. The navy, he intimated, would, un der his leadership be an organization of peace, against, which warlike emer gency must take its chance, Wilbur probably will wind up his’ affairs In the state supreme’ court early this week, so’ that he may leave for Washington,