In the midst of a terrifying storm, when all natural hope for survival is lost, the struggle for life shifts from physical effort to spiritual pleading. Realizing that human skill is no longer enough, the leader of the ship understands that every passenger must join in prayer to avert the disaster. This chief officer is a master of the sea, an expert who commands the crew in pulling and untying the ropes of the mast and sails to steer the ship against the wind. Alternatively, his position reflects his strategic wisdom and deep knowledge of navigation [אבן עזרא בשם ר' משה].
Searching the ship, the captain finds Jonah in a deep sleep. He approaches him with angry astonishment, completely shocked that anyone could remain unaware of the existential danger and sleep through such a crisis [רש״י, מצודת דוד]. The captain recognizes that this unusual storm is not a natural event, but a specific divine decree aimed at someone on board. He believes that as long as even one person fails to pray to his god, the decree will remain and endanger them all [מלבי״ם]. Furthermore, since the sailors do not know which deity has the power to save them, it is essential that every passenger participate and call out to his own god [ביאור שטיינזלץ].
A deeper psychological and spiritual dynamic explains the captain's reaction to Jonah's sleep. Human nature dictates that a person in danger will act in panic and seek help as long as there is a chance to survive. However, when all hope vanishes, complete despair sets in, often leading to a deep sleep. This surrender is typical of those who believe they are entirely subject to blind fate; once a disaster is destined, there is no escape. Yet, the captain understands that Jonah belongs to the nation of Israel, a people who are not bound by fate and who can change divine decrees through repentance and prayer. Because of this, he demands that Jonah wake up, knowing that for him, despair is never justified and there is always hope [חומת אנך].
With this understanding, the captain commands Jonah to stand and pray [מצודת דוד]. The hope is that God will direct His thoughts toward them, reconsider the harsh decree, and decide to save the ship [מלבי״ם, ביאור שטיינזלץ]. Another perspective suggests that this plea is a specific request for God's mercy and appeasement [רד״ק]. The ultimate goal of this urgent request is simply to ensure that the crew does not die and perish in the raging sea [מצודת ציון].