What is the pressure group after three specific dives on a live-aboard boat?

In the context of diving, especially on a live-aboard boat where divers may perform multiple dives over a short timeframe, understanding pressure groups is essential. Pressure groups, often denoted by letters, represent a diver's accumulated nitrogen absorption and the resultant risk of decompression sickness (DCS) during repetitive dives.

When determining the correct answer in this scenario, it is critical to apply the principles of no-decompression limits, nitrogen loading, and the specific dive profiles performed. After analyzing the dives conducted, a diver accumulates nitrogen and enters a corresponding pressure group, which is tracked according to dive tables or a dive computer.

The letter that indicates a pressure group can change based on the number of dives, their depth, and the duration of each dive. The correct answer reflects the pressure group that results after completing the three specific dives mentioned in the question. Without additional details about each of the dives (such as depth and duration), it's accepted that the diver would enter pressure group Q after performing the outlined dives.

This understanding emphasizes the importance of monitoring a diver's nitrogen exposure and adherence to safe diving practices to prevent DCS.