Rudderless
Part of speech: adjective
Definition: Without a rudder. unsteerable, without guidance.
Adrift
Part of speech: adjective
Definition: Floating at random.(of a seaman) Absent from his watch
Part of speech: adverb
Definition: In a drifting condition; at the mercy of wind and waves.
Example sentence: The swimmer adrift on the open seas measures his strength, and strives with all his muscles to keep himself afloat. But what is he to do when there is no land on the horizon, and none beyond it?