There were much more questions than this but these 2 are the main ones. Thank you for helping!

Down came the storm, and struck hard
The vessel in its strength;
She shuddered and paused, like a frightened steed,
Then leaped her cable's length.
"O father! I see a gleaming light,
Oh say, what may it be?"
But the father answered never a word,
A frozen corpse was he.
Lashed to the helm, all stiff and stark,
With his face turned to the skies,
The lantern gleamed through the gleaming snow
On his fixed and glassy eyes.

4) What do you think the gleaming light was?
5) Write down the alliterative phrase that describes the skipper's frozen corpse.

a. I hope you had the entire story poem to read. Analyzing excerpts is nasty stuff. The gleaming light when seen from see is either another ship, or a lighted bouy (usually a warning), or a lighhouse (for naviagation and warning of shore).

b. << Alliteration occurs when a series of words in a row (or close together) have the same first consonant sound. For example, “She sells sea-shells down by the sea-shore” or “Peter Piper Picked a Peck of Pickled Peppers” are both alliterative phrases.>> Where does that occur here?

Bobpursley is right. Dealing only with an excerpt is not great.

Does this have a title and author?

4) To determine what the gleaming light might be, we can analyze the context provided in the poem. The lines mention that the storm struck hard and the vessel shuddered and paused. The speaker, who is addressing their father, observes the gleaming light and asks what it may be. However, the father does not respond as he is described as a frozen corpse.

From this description, it is implied that the father is deceased and immobile. Therefore, it is unlikely that the gleaming light is coming from the father. Instead, it could be suggested that the gleaming light is a result of the storm and its impact on the surroundings. It is possible that the storm caused some objects or conditions to create a reflection or glimmer of light, catching the attention of the speaker.

5) The alliterative phrase that describes the skipper's frozen corpse is "lashed to the helm." Alliteration refers to the repetition of consonant sounds in a series of words. In this case, the words "lashed" and "helm" share the same consonant sound, creating an alliterative effect. This description emphasizes how the skipper's frozen corpse is secured or bound tightly to the helm (the steering mechanism of a ship) in a rigid and immovable manner.