Final answer:
The narrative passages focus on the survival and camaraderie of a shipwrecked crew, emphasizing the resilience and determination of people in life-threatening situations.
Step-by-step explanation:
The excerpts provided are from a narrative detailing the experiences of a group of men at sea, facing the dangers of shipwreck and struggling for survival. The central theme across these passages is the human will to survive and the deep bond formed between individuals when faced with life-threatening situations. For example, the decision to attempt a run through the surf underlines the collective determination to survive despite the odds. The surfman's wily handling of the boat and the captain's calculated commands highlight their expertise and the trust placed in one another.
The crew's resilience, camaraderie, and determination play a critical role in their survival. The narrative illustrates the instinct for self-preservation and the profound connection humans can forge when their lives depend on it.