This section 5 is when the men finally get to land. They do not have much emotion to being on land even though they appreciate a sturdy ground to sleep on. They are getting closer to the end even though they aren't even close to reaching their destination.
"The pleasure principle does not abandon the intention of ultimately obtaining pleasure, but it nevertheless demands and carries into effect the postponement of satisfaction, the abandonment of a number of possibilities of gaining satisfaction and the temporary toleration of unpleasure as a step on the long indirect road to pleasure" Sigmund Freud
"The consequences of an act affect the probability of it's occurring again" BF Skinner