Which phase is NOT part of the boarding process?

The phase identified as not part of the boarding process is detainment. In the context of boarding procedures, the boarding process is typically outlined in phases that include pre-boarding, introduction, the actual boarding operation, and post-boarding activities.

Pre-boarding involves preparation activities, such as planning and briefing the team on objectives. The introduction phase is where the boarding team approaches the vessel, identifies themselves, and explains the purpose of the boarding. The post-boarding brief allows for a debriefing where the team evaluates the operation's effectiveness and discusses any observations that may inform future boardings.

Detainment, while it may occur as a part of boarding operations when necessary, is not classified as a distinct phase of the boarding process itself. Instead, detainment is an action that can happen during or as a result of the boarding, depending on the situation and findings. Therefore, it does not fit within the standard phases that comprise the structured boarding process as outlined.