eleven o'clock
sounded a cheery voice , and Commander Bainbridge , the executive officer , stood in the doorway , bringing young Darrin to his feet in prompt salute . `` I was passing , Darrin , and so I called , '' announced the executive officer . `` Otherwise , I would have summoned you to my office . Lieutenant Cantor has secured shore leave until eleven o'clock to-night . As we are busy aboard , Mr. Cantor 's division is due for watch duty at eight bells this evening . As Mr. Cantor has shore leave you will report as officer of the deck until relieved by Lieutenant Cantor on his return to the ship . At any time between now and four bells report at my office and sign for these instructions . ''