Final answer:
Jerry's attitude towards swimming through the rock likely includes determination and anxiety, but not boredom, due to the challenging and urgent circumstances described.
Step-by-step explanation:
The character named Jerry in the provided text does not exhibit a bored attitude when swimming through the rock. Instead, Jerry's demeanor is likely to be determined and potentially anxious given the circumstances. The context of swimming in a rough sea, with companions who are struggling, and the mention of a race, implies a sense of urgency and challenge, not boredom. Being around others who are showing strong efforts to swim effectively, such as an oiler swimming rapidly or a cook's effort evident in the scene, and a captain who is dealing with an injury also indicates a serious and engaged situation that would demand determination and potentially evoke anxiety, rather than boredom.