Sec. 10.
That the board may create out of net revenue from operations and sales, and maintain and administer, a separate insurance fund, which it may use to insure in whole or in part, against all hazards commonly covered by insurance policies in such cases, any interest of the United States (1) in any vessel, either constructed or in process of construction, and (2) in any plants or materials heretofore or hereafter acquired by the board or hereby transferred to the board.