The analyses of a text #3

The narrator recalls his adolescence.
He came to his old nurse Peggotty's hometown Yarmouth to meet Peggotty's nephew Ham.
He is having a tempest.
He worries about Ham, who is away for a job.

Chapter 55 TEMPEST

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In this state, the waiter's dismal intelligence about the ships immediately connected itself, without any effort of my volition, with my uneasiness about Ham. I was persuaded that I had an apprehension of his returning from Lowestoft by sea, and being lost. This grew so strong with me, that I resolved to go back to the yard before I took my dinner, and ask the boat-builder if he thought his attempting to return by sea at all likely? If he gave me the least reason to think so, I would go over to Lowestoft and prevent it by bringing him with me.
I hastily ordered my dinner, and went back to the yard. I was none too soon; for the boat-builder, with a lantern in his hand, was locking the yard-gate. He quite laughed when I asked him the question, and said there was no fear; no man in his senses, or out of them, would put off in such a gale of wind, least of all Ham Peggotty, who had been born to seafaring.
So sensible of this, beforehand, that I had really felt ashamed of doing what I was nevertheless impelled to do, I went back to the inn. If such a wind could rise, I think it was rising. The howl and roar, the rattling of the doors and windows, the rumbling in the chimneys, the apparent rocking of the very house that sheltered me, and the prodigious tumult of the sea, were more fearful than in the morning. But there was now a great darkness besides; and that invested the storm with new terrors, real and fanciful.
[David Copperfield by Charles Dickens]
1. I'd like to know if "his" refers to above-mentioned "man."
2. And I'd like to know if the blue clause modifies "I."
Thank you in advance for your help.