noon
They resumed work on the raft immediately after a hasty breakfast . In order that their prisoner might be taken to the mainland , or out as far as they might go before a ship picked them up , they made a sort of platform , on which he could sit . They also improvised a mast on which they stretched a piece of canvas they found in the wrecked motor boat . By noon their rude vessel was completed . `` Now for the launching , '' exclaimed Frank . `` It 's nearly high tide , and if we can work it a little farther down the beach the tide will do the heaviest work for us . Then we 'll go aboard . ''