Trackline Snapshot SURPIC is defined by

• A. The starting and ending position and DTG
• B. A radius from the distress position
• C. A rectangle defined by NW and SE corners
• D. The vessel’s last known position and speed

Answer: (A)

Trackline Snapshot captures a segment of a vessel’s movement as a line from where it started to where it ended, tied to a specific date-and-time reference. The essential elements are the starting position, the ending position, and the time context (DTG) that anchors when that movement occurred. This combination provides a precise, time-stamped track segment that can be plotted and used for search planning, progress updates, and SAR decision-making.

Why this is the best fit: a trackline snapshot is defined by two geographic points and a timestamp, which together describe exactly the movement over a defined interval. A radius from the distress position describes an area to search around the incident, not the vessel’s path. A rectangle defined by NW and SE corners similarly delineates a search box rather than the vessel’s route. The vessel’s last known position and speed alone give a single point and rate, not a defined movement segment with a time reference.