Digt: O Captain! my Captain!

Hejsa, Søger en hjælpene hånd til at analysere digtet "O Captain! my Captain!" af Walt Whitman [1819-1892].
Jeg har haft en del besvær med af forstå det grundlæggende i det. Her kommer det lige.

I.
O Captain! my Captain! our fearful trip is done;
The ship has weathered every rack, the prize we sought is won;
The port is near, the bells I hear, the people all exulting,
While follow eyes the steady keel, the vessel grim and daring.
But O heart! heart! heart!
Leave you not the little spot,
Where on the deck my Captain lies,
Fallen cold and dead.

II.
O captain! my Captain! rise up and hear the bells;
Rise up - For you the flag is flung - for you the bugle trills:
For you bouquets and ribbon’d wreaths - for you the shores a-crowding:
For you they call, the swaying mass, their eager faces turning.
O Captain! dear father!
This arm I push beneath you;
It is some dream that on the deck,
You've fallen cold and dead.

III.
My Captain does not answer, his lips are pale and still;
My father does not feel my arm, he has no pulse nor will;
But the ship, the ship is anchor'd safe, its voyage closed and done;
From fearful trip, the victor ship, comes in with object won:
Exult, O shores, and ring, O bells!
But I, with silent treas,
Walk the spot my Captain lies,
Fallen cold and dead

Ordne som fx. "exulting" og "daring" ender på bokstaverne ING, Jeg har lagt mæke til, at dette tit findes i digte (enderim?), men har er effekten af det? Er det bare for at give en bedre rytme?

Sidste linje: "Fallen cold and dead" er gentaget i hvert af digtene til sidst.

Jeg plejer at lægge meget vægt i stavelserne og hvordan digtet "rytmisk" lyder.. Men jeg synes ikke rigtgi dette klinger..

Er der andre grundlæggende Vigtige ting, jeg burde fokusere på? Digte er ikke lige en af mine stærke sider.