CLEAN : Nigeria opposition leader Atiku Abubakar announces another run for presidency

The speaker begins by acknowledging attendees and addressing Nigeria's current challenges, describing the nation as a 'sinking ship' in need of urgent rescue. He announces his candidacy for the President of Nigeria under the People's Democratic Party, promising to focus on unity, security, economy, education, and decentralization. He envisions a new Nigeria where every citizen has an equal voice and emphasizes his role as a unifier to mend the nation's divisions.

What does the speaker mean by 'rescue the sinking ship'?

In what way does the speaker intend to unify Nigeria?