In this passage, a man expresses his profound gratitude to a woman for her bravery and assistance, highlighting that her efforts were pivotal to their mission. He acknowledges that without her support, they would not have been able to embark on this important endeavor. His words imply a deep respect and appreciation for her contributions.
Furthermore, he emphasizes that the entire British Navy owes her a debt of gratitude, suggesting that her courage had a significant impact not just on him, but on a larger scale. This illustrates the value of her involvement and the collective recognition of her bravery in a challenging situation.